TITLE

MEETING AT A GLANCE

AOFAS President: William C. McGarvey, MD Program Chair: your guide Scott J. Ellis, MD to the AOFAS virtual meeting Another Step Forward for the Leading Total Ankle.

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All products currently not available in all markets. ™ and ® denote Trademarks and Registered Trademarks of Wright Medical Group N.V. or its affiliates. ©2020 Wright Medical Group N.V. or its affiliates. All Rights Reserved. AP-013881A_29-Jun-2020 AOFAS AT HOME VIRTUAL MEETING

Welcome to AOFAS at Home!

On behalf of the AOFAS Board of Directors and Program Committee, we welcome you to the AOFAS at Home virtual meeting. While we would have liked to see everyone in person this year, we are pleased to have the opportunity to share our outstanding educational program with colleagues around the world. This year’s program covers just about every part of the foot and ankle, from minimally invasive techniques to ankle replacement to external fixation to the research and science behind all that we do. Each symposium during the Live Program includes live discussion

with the panelists. From the AOFAS at Home virtual platform, you can submit questions William C. McGarvey, MD for the speakers or vote for the questions you would like them to answer. AOFAS President We’re also pleased to have exceptional guest speakers joining our meeting: n Pamela Wible, MD, a physician who has studied 1,300 doctor and medical student suicides and is dedicated to the prevention of these deaths, will deliver the Keynote Presentation on Thursday. n Kevin Bozic, MD, MBA, a nationally recognized leader in value-based healthcare, joins the program on Friday as our Research Speaker. n Martinus Richter, MD, PhD, a renowned foot and ankle orthopaedic surgeon, researcher, and leader, headlines the Kenneth A. Johnson Symposium on Controversies in Foot and Ankle Surgery on Friday. Scott J. Ellis, MD Program Chair Finally, we’d like to thank our exhibitors and industry partners for their support in this challenging year. Make sure to check out the Virtual Exhibit Hall to explore new products and technology and chat with company representatives. When you visit the Exhibit Hall, you’ll also earn points in the AOFAS at Home Reward Zone for the chance to win prizes. Thank you for joining us!

AOFAS Guest Nation Connect AOFAS welcomes with AOFAS Chile as our 2020 Guest Nation! Check Share your insights from out the Guest Nation AOFAS at Home on social Symposium, a special media with #AOFAS2020 OnDemand Session featuring Chilean leaders in foot and ankle surgery (see page 30). AOFAS at Home registrants have access to OnDemand Sessions through March 31, 2021. @AOFAS @AOFAS1 @AOFAS1

3 FIBULINK® Syndesmosis Repair System

The best of both worlds: Fixation of a screw Flexibility of a suture

DEPUY SYNTHES IS WITH YOU—AND YOUR PATIENTS EVERY STEP OF THE WAY

VIRTUAL INDUSTRY SESSIONS

Experience our latest innovations in Flexible Syndesmotic Repair with the FIBULINK System AOFAS at Home Friday, September 11 Saturday, September 12 4:00 pm - 5:00 pm (CDT) 8:00 am - 9:00 am (CDT) Samuel Adams Jr, MD Michael Swords, DO Duke Health, Durham, NC Michigan Orthopedic Center, Lansing, MI Douglas Lucas, DO Sarang Desai, DO EmergeOrtho, Arden, NC Total Orthopedics Sports & Spine, Allen, TX

© DePuy Synthes 2020. All rights reserved. 149971-200814 DSUS 9/20 PROGRAM INFORMATION Table of Contents Program Information...... 5 Exhibit Hall...... 21 Leadership and Volunteers...... 6-7 Live Program...... 24-27 Resident Scholars...... 9 Resident Program...... 28 Mission Partners...... 11 OnDemand Program...... 30-34 Foundation Donors...... 12-15 Audio Posters...... 35-45 Meeting Supporters...... 17 ePosters...... 46-57 Industry Sessions...... 18-19 Disclosures...... 58-75

Target Audience Disclosure This educational program is designed for orthopaedic AOFAS requires all instructors, planners, and other surgeons, physicians, and allied health professionals in the individuals in a position to control or influence the content field of orthopaedic foot and ankle surgery. of an educational activity to disclose all relevant financial relationships or affiliations during the past 12 months with Educational Objectives any commercial interest (any entity producing, marketing, At the conclusion of the AOFAS at Home virtual meeting, re-selling, or distributing healthcare goods and services learners should be able to: consumed by, or used on patients). All identified conflicts n Recognize and assess current data reflecting clinical of interest must be resolved and the education content trends, emerging surgical techniques, pre- and post- vetted by AOFAS for fair balance, scientific objectivity, and operative procedures, and technological innovations in appropriateness. AOFAS also requires faculty to disclose orthopaedic foot and ankle surgery when off-label/unapproved uses of a product are discussed in a CME activity. AOFAS attests that the persons responsible n Describe and apply current research in foot and ankle for the development of this educational activity did so disorders to improve patient care independently and were not influenced by commercial n Identify ways to avoid potential complications in foot and supporters. All financial disclosures will be provided to ankle procedures meeting attendees in the final program materials. n Incorporate knowledge of patient safety, outcomes, and evidence-based medicine into foot and ankle patient care Disclaimer The material presented in this continuing medical education Statement of Need activity has been made available by the American A need for this educational activity has been determined Orthopaedic Foot & Ankle Society (AOFAS) for educational based on previous course evaluations and the AOFAS purposes only. This material is not intended to represent educational curriculum. The content of this course was based the only, nor necessarily the best, methods or procedures on current issues and topics provided by AOFAS membership appropriate for the medical situation discussed, but rather and leadership. For more information on the AOFAS CME is intended to present an approach, view, statement, or mission, visit aofas.org/education. opinion of the authors or presenters, which may be helpful or of interest to other practitioners. Methods, techniques, and Accreditation procedures demonstrated and views and opinions expressed The American Orthopaedic Foot & Ankle Society (AOFAS) by speakers, presenters, and faculty are their own, and do not is accredited by the Accreditation Council for Continuing necessarily represent those of AOFAS, nor does presentation Medical Education (ACCME) to provide continuing medical on the program represent or constitute endorsement or education (CME) for physicians. promotion by AOFAS. AOFAS expressly disclaims any warranties or guarantees, expressed or implied, and shall Continuing Education Credit not be liable for damages of any kind in connection with AOFAS designates the AOFAS at Home live activity for a the material, methods, information, techniques, opinions, or maximum of 17.5 AMA PRA Category 1 CreditsTM and the procedures expressed, presented, or demonstrated. AOFAS at Home enduring materials for a maximum of 46.5 AMA PRA Category 1 CreditsTM. Physicians should claim only the credit commensurate with the extent of their AOFAS may photograph or record you as you participate in participation in the activity. Participants are required to this meeting and related activities. Lectures and questions submit a completed evaluation form at the end of the from the audience will be recorded and made available in meeting in order to receive CME credit. future materials. Photographing and recording of the sessions by meeting attendees is prohibited.

5 LEADERSHIP AND VOLUNTEERS

AOFAS Board of Directors 2019-2020 President Past President William C. McGarvey, MD Thomas H. Lee, MD President-Elect Member-at-Large Bruce E. Cohen, MD John T. Campbell, MD Vice President Member-at-Large Christopher W. DiGiovanni, MD Casey J. Humbyrd, MD Secretary Member-at-Large Michael S. Aronow, MD Kenneth J. Hunt, MD Treasurer Member-at-Large Bryan D. Den Hartog, MD A. Holly Johnson, MD Immediate Past President J. Chris Coetzee, MD

Foundation Board of Directors 2019-2020 President Member-at-Large Scott J. Ellis, MD Christopher W. DiGiovanni, MD President-Elect Member-at-Large Eric M. Bluman, MD, PhD Peter G. Mangone, MD Secretary Member-at-Large Michael S. Aronow, MD Jeremy J. McCormick, MD Treasurer Member-at-Large Bryan D. Den Hartog, MD William C. McGarvey, MD Member-at-Large Bruce E. Cohen, MD

AOFAS Program Committee Scott J. Ellis, MD, Program Chair Kwang-Bok Lee, MD, PhD A. Holly Johnson, MD, MIS Course Chair Pamela C. Luk, MD, Young Physicians Mohammed Mokhtar Abd-Ella, MD Committee Chair Jason T. Bariteau, MD Augusto Cesar Monteiro, MD Steve B. Behrens, MD G. Andrew Murphy, MD, Education Michael P. Clare, MD, Awards & Scholarships Committee Chair Committee Chair Vinod Panchbhavi, MD, FACS Patrick B. Ebeling, MD, Evidence Based Medicine John Reach Jr., MD, MSc Committee Chair Chamnanni Rungprai, MD David N. Garras, MD Geoffrey I. Watson, MD Michael D. Johnson, MD Hai-Lin Xu, MD Hong-Geun Jung, MD David B. Thordarson, MD, Harold B. Kitaoka, MD, Research Committee Chair FAI/FAO Editor-in-Chief (ex-officio) Sandra E. Klein, MD

6 Abstract Reviewers Mohammed Mokhtar Abd-Ella, MD Clifford B. Jones, MD Eildar Abyar, MD Justin M. Kane, MD Samuel B. Adams, MD Jonathan R.M. Kaplan, MD Amiethab A. Aiyer, MD Kevin L. Kirk, DO Umur Aydogan, MD Harold B. Kitaoka, MD Michael C. Aynardi, MD Sandra E. Klein, MD Jason T. Bariteau, MD John Y. Kwon, MD Judith F. Baumhauer, MD, MS, MPH Sameh A. Labib, MD Steve B. Behrens, MD James Lachman, MD Ross A. Benthien, MD, MPH L. Daniel Latt, MD, PhD Adam D. Bitterman, DO Brian C. Law, MD Laura M. Bruse, MD Kwang-Bok Lee, MD, PhD Francisca J. Caycedo, MD Daniel E. Lehman, MD Wen Chao, MD John Louis-Ugbo, MD Timothy P. Charlton, MD Pamela C. Luk, MD Matthew W. Christian, MD Patrick J. Maloney, MD Elizabeth Cody, MD Elizabeth A. Martin, MD M. Truitt Cooper, MD Jeremy J. McCormick, MD Timothy R. Daniels, MD Christopher P. Miller, MD, MHS Cesar de Cesar Netto, MD, PhD Stuart D. Miller, MD Robert Dehne, MD Sara Lyn Miniaci-Coxhead, MD Benedict F. DiGiovanni, MD Augusto Cesar Monteiro, MD Beth M. Dollinger, MD G. Andrew Murphy, MD Jesse F. Doty, MD Kathryn O’Connor, MD John S. Early, MD Irvin Oh, MD Patrick B. Ebeling, MD Vinod K. Panchbhavi, MD J. Kent Ellington, MD, MS Geoffrey I. Phillips, MD Amanda J. Fantry, MD Sourendra Raut, MD Adolph S. Flemister, MD Christopher W. Reb, DO Erik C. Freeland, DO Andrew J. Rosenbaum, MD David N. Garras, MD Jason W. Rudolph, MD Katherine Gavin, MD Chamnanni Rungprai, MD Tyler A. Gonzalez, MD, MBA Paul M. Ryan, MD Gearin A. Green, MD Shawn E. Schoch, MD J. Speight Grimes, MD Karl M. Schweitzer, MD Christopher E. Gross, MD Ashish Shah, MD Daniel Guss, MD, MBA Scott B. Shawen, MD Amgad M. Haleem Amin, MD, PhD Thomas L. Sherman, MD Walter C. Hembree, MD Glenn G. Shi, MD Kurt Hofmann, MD David B. Thordarson, MD Jeannie Huh, MD J. Turner Vosseller, MD Todd A. Irwin, MD Joan R. Williams, MD J. Benjamin Jackson, MD Alastair S.E. Younger, MBChB, ChM, FRCSC James R. Jastifer, MD Richard A. Zell, MD A. Holly Johnson, MD Jacob R. Zide, MD

For disclosures for leadership and committee members, see page 58.

7 Minimally Invasive Arthrex Ankle Fusion Plate Small Footprint, Huge Impact

Compared to the standard 3-screw fusion construct, the addition of an anterior plate increases construct rigidity and decreases micromotion at the ankle fusion interface without the need for an extensile incision.1

Osteotome Angled Up, 5.5 mm

Osteotome Angled Up, 12 mm ■ Arthroscopic approach/reduced skin incision ■ Plate acts as a tension band to resist plantar flexion Osteotome Straight 5.5 mm ■ Increased construct rigidity compared to a 3-screw fusion1 Osteotome Straight 12 mm

Cup Curette Straight, 6 mm

Cup Curette Curved, 6 mm

AP View

X-rays courtesy of David Dalstrom, MD (San Diego, CA)

Lateral View

Reference 1. Tarkin IS, Mormino MA, Clare MP, Haider H, Walling AK, Sanders RW. Anterior plate supplementation increases Ad.Arthrex.com/MIAP ankle arthrodesis construct rigidity. Foot Ankle Int. 2007;28(2):219–223. doi:10.3113/FAI.2007.0219 © 2020 Arthrex, Inc. All rights reserved. AD1-000130-en-US_A RESIDENT SCHOLARSHIP PROGRAM Congratulations to the 2020 Resident Scholars! Eighty-two orthopaedic residents in the US and Canada were selected for this year’s AOFAS Resident Scholarship Program. Resident Scholarships cover registration fees for the AOFAS at Home virtual meeting. Each Scholar is paired with an AOFAS-member mentor and attends an exclusive virtual gathering where they can meet mentors and other scholarship recipients.

2020 Resident Scholars Nicodeme W. Agassy, MD Joshua C. Luginbuhl, MD Nathaniel Alexander, MD Madeline M. Lyons, MD Maxwell C. Alley, MD Adel Mahjoub, MD Joshua J. Bagley, MD Patrick C. McGregor, MD William T. Baumgartner, MD Andrew P. McGuire, MD Roshmi Bhattacharya, MD Kathy M. McGurk, MD Abigail N. Boduch, MD R. Randall McKnight, MD Morgan L. Boren, DO Nabil Mehta, MD Monique C. Chambers, MD Maria A. Munsch, MD Stephen R. Chen, MD Stefano R. Muscatelli, MD Garwin Chin, MD Muhammad Y. Mutawakkil, MD Yvonne E. Chodaba, MD Devon Myers, DO Seth R. Cope, MD Alex W. Nielsen, MD Sai K. Devana, MD David M. Noble, MD Alexander Duke, MD Sean G. Parham, MD John L. Eakin, MD Braden J. Passias, DO Zein S. El-Zein, MD Jordan B. Pasternack, MD Stephen D. Forro, DO Vandan D. Patel , MD Burke Gao, MD Gregory F. Pereira, MD Stefan C. Garcia, MD Andres S. Piscoya, MD Jorge N. Gil, MD Pooja Prabhakar, MD Rachel L. Glenn, MD Justin J. Ray, MD Jonathan B. Goodloe, MD Alfred G. Ricci, DO Trevor R. Gulbrandsen, MD Daniel J. Ross, MD Justin C. Haghverdian, MD Nicole E. Schneider, MD, BSc Brandon A. Haghverdian, MD Theodore L. Schoenfeldt, MD William M. Hannay, MD Daniel Smigielski, MD Brittany Haws, MD Richard M. Smith, MD Zachary P. Herzwurm, MD Haley E. Smith, MD Neal Huang, MD Brendan Southam, MD Hunter L. Mitchell, DO Jimmy Tat, MD Edward Hur, MD Christopher J. Traynor, MD Eitan M. Ingall, MD Benjamin D. Umbel, DO Akshay Jain, MD Alicia M. Unangst, DO Charles A. Johnson, MD Devin F. Walsh, MD Scott M. LaTulip, MD Jacob B. Wilkerson, MD Lacey G. Lavie, MD Emilie R.C. Williamson, MD Nicholas J. Lemme, MD Jenna L. Wilson, MD Rachel L. Lenhart, MD, PhD Linda L. Zhang, MD Lauren K. Lewis, MD John Z. Zhao, MD Jeffrey P. Liles, MD

9 Throughout the COVID-19 pandemic, our work continues.

Invest in the future of foot and ankle education, research, and humanitarian service. Donate to the Foundation at aofas.org/foundation MISSION PARTNERS

The Orthopaedic Foot & Ankle Foundation acknowledges the following companies for their generous contributions to the Foundation as an integral part of the AOFAS/Foundation Mission Partner Program (current as of August 15, 2020). Thank you for your investment in the advancement of orthopaedic foot and ankle care!

DIAMOND/DYNAMIC MISSION PARTNER

GOLD/DECISIVE MISSION PARTNER

SILVER/DEDICATED MISSION PARTNER

BRONZE/MISSION PARTNER

In2Bones USA

A GLOBAL EXTREMITY COMPAN Y

COPPER/FOUNDATION SUPPORTER

11 FOUNDATION DONORS Thank You to Our Donors! The Orthopaedic Foot & Ankle Foundation acknowledges the following individuals for their charitable contributions in 2020. The list below reflects individual gifts received January 1 to August 20, 2020. Invest in the future of orthopaedic foot and ankle care with a gift to the Foundation! Visit aofas.org/donate to make a donation online. Every gift matters!

BENEFACTOR — $10,000 - $24,999 FRIEND — $500 - $999 Scott B. Shawen, MD Wendy and Ronald W. Smith, MD Amgad M. Haleem Amin, MD, PhD Wei Shen, MD Gregory T. Ardoin, MD Zhongmin Shi, MD Jon Simon PARTNER — $5,000 - $9,999 George N. Armstrong Jr., MD Tomonori Atsuta, MD Michael B. Simpson, MD Jeffrey E. Johnson, MD Steve B. Behrens, MD Joseph C. Vineyard, MD Paul A. Kammerlocher, MD Joseph E. Bellamy, MD Rebecca Wahl James Mack Lancaster, MD Wen Chao, MD Kathryn L. Williams, MD Charles L. Saltzman, MD Daniel A. Charlick, MD Alastair S.E. Younger, MBChB, ChM Noah Chinitz, MD SUPPORTER — $2,500 - $4,999 Elizabeth Cody, MD DONOR — UP TO $499 Michael S. Aronow, MD Mark J. Conklin, MD Jorge I. Acevedo, MD Harold B. Kitaoka, MD Marlene DeMaio, MD Stephanie P. Adam, DO Elaine M. Leighton, MPH, CAE Constantine A. Demetracopoulos, MD Craig Chike Akoh, MD Raymond J. Sullivan, MD Benedict F. DiGiovanni, MD Arash Aminian, MD Norman Espinosa, MD Joseph T. Anderson, MD ASSOCIATE — $1,000 - $2,499 Daniel C. Farber, MD Chayanin Angthong, MD, PhD John E. Feighan, MD Umur Aydogan, MD Natalie R. Danna, MD Adolph S. Flemister Jr., MD Christina P. Bakir, MD Bryan D. Den Hartog, MD Scott K. Forman, MD Heather L. Barske, MD Bryan C. Ding, MD Eric C. Gokcen, MD Eric K. Bartel, MD John A. DiPreta, MD Heather E. Gotha, MD Evan K. Bash, MD Daniel J. Fuchs, MD Stanley C. Graves, MD Gonzalo F. Bastias, MD David N. Garras, MD Megan M. Hannon William J. Baylis, DO Mark J. Herr, MD Joshua G. Hunter, MD Lawrence Berson, MD J. Benjamin Jackson III, MD Michael F. Iossi, MD Roberto Bevoni, MD Kenneth S. Jung, MD W. Dean Jameson, MD Robert H. Blotter, MD Ashkan Lahiji, MD Jeffrey R. Jockel, MD Dimas R. Boedijono, MD Daniel E. Lehman, MD John P. Ketz, MD Daniel D. Bohl, MD, MPH Christopher W. Nicholson, MD Joshua H. Lamb, MD Matthew M. Brewster, DO Ariel Palanca, MD David S. Levine, MD Andrew A. Brief, MD David A. Porter, MD, PhD Thomas A. McDonald, MD Max and Claudia Brodsky Karl Rathjen, MD Christopher P. Miller, MD Nathan Bruck, MD Mark S. Sanders, MD G. Andrew Murphy, MD Wendy Carranza, CMP Gene W. Shaffer, MD Gregory M. Neely, MD Steven E. Casey, MD Sheryl M. Smith, MD Irvin Oh, MD Justin L. Cashman III, MD W. Bret Smith, DO, MS Joseph T. O’Neil, MD Rebecca A. Cerrato, MD Donald S. Stewart II, MD Stephen J. Pinney, MD Paulo Cesar de Cesar, MD Kristopher G. Stockton, MD Robert Alan Probe, MD Cesar de Cesar Netto, MD, PhD Alan Taylor Robert A. Raines Jr., MD Stephanie Chen, NP Shay A. Tenenbaum, MD Abdi Raissi, MD Nicholas A. Cheney, DO C. Mark Thigpen, MD David R. Richardson, MD Matthew W. Christian, MD Nels W. Thorderson, MD Matthew M. Roberts, MD Brian E. Clowers, MD Pablo Wagner, MD Kurt M. Rongstad, MD Justin P. Colanese, MD Steven E. Roser, MD

12 Nuno V. Meireles Corte-Real, MD David J. Keblish, MD Palanisamy Ramesh, MS, FRCS, MCh Adam C. Crawford, MD Travis J. Kemp, MD Carlos Enrique Ramirez, MD Eduardo Pedrini Cruz, MD Stacee M. Kessinger, MD Sourendra Raut, MD Christopher W. DiGiovanni, MD Nathaniel Kier Sudheer C. Reddy, MD Jessica Dornfeld Christian K.K. Kikuchi, MD Megan E. Reilly, MD Thomas C. Dowd, MD Jun-Beom Kim, MD James Reisman, DMD Mark C. Drakos, MD Kevin L. Kirk, DO Jason W. Rudolph, MD Susan C. Eby, PT, MS Brian D. Kleiber, MD Tracy D. Rupke, MD Andrew J. Elliott, MD Toshinori Kurashige, MD Frank G. Russo-Alesi, MD Scott J. Ellis, MD Sterling J. Laaveg, MD Paul M. Ryan, MD Shelly Encher James Lachman, MD Jefferson B. Sabatini, MD Timothy C. Epting, DO Alan J. Laing, MD Michael L. Salamon, MD Emily L. Exten, MD Richard J. Lamour, MD Norihiro Samoto, MD Todd A. Fellars, MD Brian C.W. Law, MD Melanie Sanders, MD Sergio Fernández, MD Woo-Chun Lee, MD Thomas H. Sanders, MD James R. Ficke, MD John S. Lewis Jr., MD James R. Santangelo, MD Jorge Filippi, MD, MBA Jason S. Lin, MD David J. Santone, MD Douglas A. Flory, MD Eric J. Lindberg, MD Timo Schmid, MD Darcy S. Foral, MD Raymond F. Lower, DO Ross A. Schumer, MD Erik C. Freeland, DO Tulio Horacio Makkozzay, MD Daniel J. Scott, MD, MBA Alena Frey, CMP Richard M. Marks, MD David G. Scott, MD Mayo J. Galindo Jr., MD Matthew J. Marquart, DO John T.A. Seddon, MD Beatriz E. García-Cardona, MD Elizabeth A. Martin, MD Hossein Pakzad Sedigh, MD L. Nathan Gause, MD Kevin D. Martin, DO Jeffrey A. Senall, MD Lauren E. Geaney, MD Victoria Matt, MD, MS Jeffrey D. Seybold, MD Eric Giza, MD Mark M. Mikhael, MD Thomas I. Sherman, MD John R. Gleason, MD James E.W. Meeker, MD David F. Sitler, MD Alexandre Godoy-Santos, MD, PhD Marc J. Michaud, MD Manuel Resende Sousa, MD Natasha Gonzalez, MA Robert Mihalich, MD Peter Stavrou, MD Robert R. Gorman III, MD Mark M. Mikhael, MD Benjamin E. Stein, MD Albert F. Haas, MD Sara Lyn Miniaci-Coxhead, MD Steven D. Steinlauf, MD Mariam Hakim-Zargar, MD Shana N. Miskovsky, MD Krista Stewart Michael A. Hames, MD Jennifer Moore Raymond J. Sullivan, MD Kamran S. Hamid, MD, MPH Julie Murkowski Panagiotis Symeonidis, MD, PhD David A. Hamilton Jr., MD, MBA Satoshi Nagano, MD Paul G. Talusan, MD Gerald F. Harris, PhD John A. Nassar, MD Anthony K. Teebagy, MD Thomas G. Harris, MD F. Ray Nickel, MD Donald D. Thornbury, MD Andrew Haskell, MD Hideo Noguchi, MD Guadalupe Gonzalez de Trejo C. Thomas Haytmanek Jr., MD Meir Nyska, MD Jaime Uribe, MD Thomas M. Hearty, MD, DPT Daniel Ocel, MD João F. Vide, MD Patricia Heiberger Jason B. O’Dell, MD Xu Wang, MD David J. Heinsch, MD Field Ogden II, MD Brian A.C. Weatherby, MD Mario Herrera-Perez, MD Blake L. Ohlson, MD Jason Weber, MD Todd A. Irwin, MD Judith R. Oppenheim, MD Nicholas J. Wegner, MD Lukas D. Iselin, MD Hazel Oreluk, MA Martin H.S. Weisman, MD Juha I. Jaakkola, MD James P. O’Sullivan, MBBS John B. Weltmer, MD Gillian E. Jackson, MBChB Diane M. Palkert, MD Benjamin R. Williams, MD Cory Janney, MD Joseph S. Park, MD Kevin J. Wing, MD Clifford L. Jeng, MD Kenneth K. Park, MD Kimberly L. Workman, MD Julie M. Johnson, MD Roger N. Passmore, MD Yeung Yeung, MD Christina A. Kabbash, MD, PhD, MPH Christopher J. Pearce, Patrick Yoon, MD Clifford R. Kahn, MD MFSEM(UK), MBChB Kensei Yoshimoto, MD Juan Kalb, MD Christie Petrucci Diego H. Zanolli de Solminihac, MD Scott D. Karr, MD Christian Plaass, MD Christopher Zingas, MD Robert A. Kaye, MD Steven M. Raikin, MD

13 LIFETIME DONORS President’s Circle of Lifetime Donors The President’s Circle of Lifetime Donors recognizes those who have supported the Foundation since inception. Their vision and commitment have made a lasting impact on the future of foot and ankle orthopaedic surgery. We are grateful for their support.

PRESIDENT’S CIRCLE: PLATINUM Susan & Paul F. Plattner, MD $100,000+ Naomi N. Shields, MD Thomas H. Lee, MD Mark P. Slovenkai, MD Mary Louise & Dane* Miller, PhD Raymond J. Sullivan, MD Pierce E. Scranton Jr., MD Brian C. Toolan, MD Wendy & Ronald W. Smith, MD Robert G. Veith, MD Troy S. Watson, MD Steven B. Weinfeld, MD PRESIDENT’S CIRCLE: GOLD $50,000 - $99,999 PRESIDENT’S CIRCLE: BRONZE Thomas O. Clanton, MD $10,000 - $24,999 Jonathan T. Deland, MD Bryan D. Den Hartog, MD Robert S. Adelaar, MD Carol & E. Greer Richardson, MD John G. Anderson, MD George A. Arangio, MD Michael S. Aronow, MD PRESIDENT’S CIRCLE: SILVER Stacy A. Bacon, MD $25,000 - $49,999 Ross A. Benthien, MD Robert B. Anderson, MD Gregory C. Berlet, MD Judith F. Baumhauer, MD, MPH Eric M. Bluman, MD, PhD James W. Brodsky, MD Donald R. Bohay, MD Christopher P. Chiodo, MD Michael R. Clain, MD J. Chris Coetzee, MD Frank A. Cordasco, MD Bruce E. Cohen, MD W. Hodges Davis, MD Christopher W. DiGiovanni, MD Benedict F. DiGiovanni, MD Timothy C. Fitzgibbons, MD John S. Early, MD Brett R. Grebing, MD Mark E. Easley, MD Bryan J. Hawkins, MD Scott J. Ellis, MD Jeffrey E. Johnson, MD Adolph S. Flemister, MD Armen S. Kelikian, MD Robert Gieringer, MD Kurt F. Konkel, MD Justin K. Greisberg, MD Karen & John O. Krause, MD Steven L. Haddad, MD Daniel E. Lehman, MD Susan N. Ishikawa, MD Sheldon S. Lin, MD Paul J. Juliano, MD Matthew & Susan K. Lyons Family Foundation Harold B. Kitaoka, MD Peter G. Mangone, MD Lori J. & Fred J. Kolb Leland C. McCluskey, MD Alan G. Lewis, MD Mark S. Myerson, MD Philip & Lousanne H. Lofgren, CAE Steven K. Neufeld, MD Gregory A. Lundeen, MD Martin J. O’Malley, MD Eric S. Malicky, MD

14 Martin G. Mankey, MD Steven A. Herbst, MD William C. McGarvey, MD Helen M. Horstmann, MD Christopher W. Nicholson, MD Shepard R. Hurwitz, MD James A. Nunley II, MD W. Dean Jameson, MD Michael S. Pinzur, MD A. Holly Johnson, MD Steven M. Raikin, MD Stuart D. Katchis, MD Abdi Raissi, MD David B. Kay, MD David R. Richardson, MD Simon Lee, MD Steven D.K. Ross, MD Elaine M. Leighton, MPH, CAE Charles L. Saltzman, MD David S. Levine, MD Bruce J. Sangeorzan, MD Alan Lewis, MD Lew C. Schon, MD Lowell D. Lutter, MD* Gene W. Shaffer, MD Arthur Manoli II, MD Michael J. Shereff, MD James R. McWilliam, MD Judith W. Smith, MD Kirstina Olson, MD W. Bret Smith, DO Vincent G. Oriente, MD Ruth L. Thomas, MD Tye J. Ouzounian, MD David B. Thordarson, MD John A. Papa, MD Keith L. Wapner, MD Fernando A. Peña, MD Jiun-Rong Peng, MD PRESIDENT’S CIRCLE: DONOR Glenn B. Pfeffer, MD Landrus L. Pfeffinger, MD $5,000 - $9,999 Terrence M. Philbin, DO Jamal Ahmad, MD Stephen J. Pinney, MD George N. Armstrong Jr., MD Matthew M. Roberts, MD Donald E. Baxter, MD Kurt M. Rongstad, MD Wayne S. Berberian, MD Mark S. Sanders, MD Charles A. Borgia, MD Paul V. Spiegl, MD Frederick F. Buechel Sr., MD Donald S. Stewart II, MD John T. Campbell, MD Michael B. Strauss, MD Wen Chao, MD Anand M. Vora, MD Loretta B. Chou, MD Lowell S. Weil Sr., DPM Mark J. Conklin, MD Alastair S.E. Younger, MBChB, ChM Stephen F. Conti, MD Jay L. Crary, MD *Deceased Richard J. De Asla, MD Timothy A. DuMontier, MD Andrew J. Elliott, MD LEGACY SOCIETY Richard D. Ferkel, MD Timothy J. Flock, MD The Foundation gratefully acknowledges the following Carol C. Frey, MD individuals for their planned gift of a bequest, retirement Christopher E. Gentchos, MD plan, insurance beneficiary designation, or similar planned Mark J. Geppert, MD gift. For more information or to make a planned gift, visit Eric Giza, MD aofas.org/legacy. John S. Gould, MD* Bryan D. Den Hartog, MD William M. Granberry, MD Mark E. Easley, MD Christian C. Hall, MD Linda R. Ferris, MBBS Gerald F. Harris, PhD Peter G. Mangone, MD Paul J. Hecht, MD

15 AOFAS at Home Platinum Exhibitor Sept. 10-12, 2020 INTELLIGENTLY DESIGNED ADVANCED AT EVERY APPROACH

Drilled Into Accuracy Distractor locks into plate for easier, more controlled anatomic reduction—modifi ed “push- pull” technique. DrillGuage 3-in-1 spring-loaded system acts as a drill guide, drill bit and depth guage for faster, one-handed technique.

Equipped for Effi ciency Single tray system equipped with 39 unique plating options for Distal Fibula, Bimalleolar, and Trimalleolar ankle fractures.

For more information or to schedule a case, contact your Medline UNITE representative, or visit medlineunite.com.

© 2020 Medline Industries, Inc. All rights reserved. Medline and Medline UNITE are registered trademarks of Medline Industries, Inc. / MKT19W1038595 / 49 AOFAS AT HOME MEETING SUPPORTERS Thank You! AOFAS gratefully acknowledges the following companies for contributing to the success of AOFAS at Home. Current as of August 31, 2020.

Promotional Supporters

$50,000 AND UP

$20,000 TO $50,000

$5,000 TO $20,000

UP TO $5,000

Educational Grants The AOFAS at Home educational program was made possible in part with support from the following companies: Stryker Keynote Speaker: Pamela Wible, MD

Treace Medical Concepts, Inc. Symposium: Battle of the Bunions: Why My Way of Fixing Bunions Is Best

17 INDUSTRY SESSIONS

Explore new products and techniques in industry-led workshops. No CME awarded; program subject to change; links to sessions will be provided in the virtual platform.

THURSDAY, SEPTEMBER 10 FRIDAY, SEPTEMBER 11 8:00 – 9:30 pm CT 4:00 – 5:30 pm CT

Bioventus LLC 3M + KCI Difficult Cases: The Role of Bone Stimulation Next Generation Negative Pressure Therapy for Incision in Fracture Care and Soft Tissue Management: Improving Outcomes Following Lower Extremity Surgery Faculty: Robert B. Anderson, MD Faculty: Ravi A. Karia, MD Paragon 28 Paragon 28 Precision Ankle Solutions DePuy Synthes Flexible Syndesmotic Repair with the FIBULINK System Faculty: Mark S. Myerson, MD Faculty: Samuel B. Adams, MD Stryker Douglas E. Lucas, DO Managing Midfoot Reconstruction with Stryker’s NEW T2 ICF Nailing System Paragon 28 Why the Lapidus and Emergent Minimally Invasive Faculty: Michael C. Aynardi, MD Approaches Jason T. Bariteau, MD Faculty: Adam P. Schiff, MD Gregory P. Guyton, MD Cesar de Cesar Netto, MD, PhD Treace Medical Concepts, Inc. Lapiplasty® System Innovations Stryker Addressing Ankle Fusions with Stryker’s NEW AxSOS 3 Faculty: Mark E. Easley, MD Ankle Fusion Plating System Robert D. Santrock, MD Faculty: W. Bret Smith, DO Michael J. Coughlin, MD Armen S. Kelikian, MD Wright Medical Group N.V. Keith L. Wapner, MD LapiFuse™ Live Cadaveric Experience: Why Patients Deserve More Than Triplanar Correction Zimmer Biomet Total Ankle Replacement: Complex Cases Faculty: W. Hodges Davis, MD Faculty: Jesse F. Doty, MD Steven A. Herbst, MD Lew C. Schon, MD Zimmer Biomet Continuum of Care: Hallux Valgus and Lisfranc Repair Faculty: Ricardo L. Cook, MD Rob Grunfeld, MD

18 FRIDAY, SEPTEMBER 11 CONTINUED SATURDAY, SEPTEMBER 12 8:10 – 9:40 pm CT 8:00 – 9:30 am CT

Paragon 28 DePuy Synthes Changes in Thinking and Approaches to Ankle Flexible Syndesmotic Repair with the FIBULINK System and TTC Arthrodesis Faculty: Faculty: Michael P. Swords, DO Mark S. Myerson, MD Sarang N. Desai, DO Michael E. Brage, MD GMReis Stryker What Is New in Foot and Ankle Sports Addressing Ankle Fusions with Stryker’s NEW AxSOS 3 Injuries Treatment? Ankle Fusion Plating System Faculty: Faculty: Cristian A. Ortiz, MD Michael J. Coughlin, MD Andrew R. Harston, MD Armen S. Kelikian, MD Paragon 28 Keith L. Wapner, MD Emerging Concepts and Research in Pilon Fx, Ankle Fx and Syndesmosis Repair Faculty: John Y. Kwon, MD

Stryker Managing Midfoot Reconstruction with Stryker’s NEW T2 ICF Nailing System Faculty: Michael C. Aynardi, MD Jason T. Bariteau, MD Adam P. Schiff, MD

Zimmer Biomet Fusion and Pain in the Foot and Ankle Faculty: Robert B. Anderson, MD John S. Early, MD

Download the AOFAS Mobile App The mobile app is your source for Industry Symposia information, paper and poster abstracts, and the latest updates. Search for “AOFAS” in your iOS or Android app store.

19 The #1 Bunion Product in the US*

5+ Years of Innovation 13 Lapiplasty® Publications 20,000+ Patients Treated

2 Correct the alignment in Perform precision cuts Achieve controlled Biomechanically-tested all three planes before to minimize metatarsal compression while maintain- multiplanar stability for rapid 3 making cuts shortening1 ing the 3-plane correction return to weight-bearing

Lapiplasty.com

*Trailing 12 months’ revenues based on Company market estimates M810A 1 TMC data on file, M681. 2 Dayton P, et al. J Foot Ankle Surg. 2016. 55:567-71. 3 Ray J, et al. Foot Ankle Int. 2019 Aug;40(8):955-960. Pat. www.treace.com/patents ©2020 Treace Medical Concepts, Inc. All rights reserved.

M810A_Lapiplasty_AOFAS_MeetingAtGlance_Ad_FINAL.indd 1 8/7/2020 1:28:07 PM EXHIBIT HALL Visit the Virtual Exhibit Hall n Explore industry products, services, and technology to improve your practice n View product images and videos n Virtually chat with company representatives one-on-one Access the Exhibit Hall through the AOFAS at Home platform. The Exhibit Hall opens on Thursday, September 10, at 2:00 pm Central Time.

Exhibitors

PLATINUM LEVEL 3M+KCI Innomed, Inc. Acumed Medartis, Inc. Alafair Biosciences, Inc. Medline Industries Inc. Amniox Medical Nextremity Solutions Inc. Avitus Orthopaedics Inc. Orthofix Arthrex, Inc. OsteoMed LLC Bioventus LLC Paragon 28 Carestream Health, Inc. Smith & Nephew, Inc. CurveBeam LLC Stryker DJO Global, Inc. Treace Medical Concepts, Inc. DePuy Synthes Wright Medical Group N.V. GMReis Zimmer Biomet In2Bones LLC

GOLD LEVEL Crossroads Extremity Systems Origin Biologics EDGe Surgical, Inc. Return to Play MedShape, Inc. TriMed, Inc.

SILVER LEVEL Extremity Medical LLC

AOFAS at Home Reward Zone Engage with the AOFAS at Home platform for your chance to win a prize! Earn points when you complete tasks in the Reward Zone — including visiting the Virtual Exhibit Hall. Attendees with the most points will win items from the AOFAS Apparel Store.

21 The Power of Lapiplasty®

Powerful Tension-Side Fixation Designed for a Mini Incision

Anatomic contour accommodates tibialis anterior tendon insertion

Center span extends 3D anatomic, plantarly across U-shaped curvature for access to tension-side of 1st TMT joint locking screws through a mini dorsal incision

Lapiplasty.com

Pat. www.treace.com/patents ©2020 Treace Medical Concepts, Inc. All rights reserved. M812A

22

M812A_Lapiplasty_AOFAS_MeetingAtGlance_Ad_MIS_FINAL.indd 1 8/7/2020 1:28:31 PM EDUCATION CALENDAR

Mark your calendar for these upcoming education events!

October 14, 2020 December 11, 2020 Foot and Ankle Resident Review Webinar AOFAS Allied Health Virtual Course Moderator: Amgad Haleem Amin, MD, PhD aofas.org/allied aofas.org/webinars April 15-17, 2021 October 17, 2020 AOFAS Advanced Foot and Ankle Course Minimally Invasive Surgery Virtual Course Chicago, Illinois Course Chair: A. Holly Johnson, MD Course Chair: Christopher P. Chiodo, MD aofas.org/MIS Course Co-Chair: Peter G. Mangone, MD aofas.org/advancedfoot October 28, 2020 Practice Management Webinar April 29-May 1, 2021 Moderator: John A. DiPreta, MD International Federation of aofas.org/webinars Foot & Ankle Societies (IFFAS) 7th Triennial Scientific Meeting December 2, 2020 Viña del Mar, Chile Adding Arthroscopy to Your Foot and Ankle iffaschile2021.com Practice Webinar Moderator: Phinit Phisitkul, MD aofas.org/webinars

AOFAS Members: Complimentary webinars and reduced registration rates for AOFAS meetings and courses are benefits of your membership. Make sure to log into your account at aofas.org before registering.

REGISTER NOW Minimally Invasive Surgery Virtual Course October 17, 2020

Join Course Chair A. Holly Johnson, MD, and renowned faculty from around the world for the Minimally Invasive Surgery (MIS) Virtual Course. This one-day course offers a comprehensive look at foot and ankle MIS, from getting started to advanced techniques.

For more information and registration, visit aofas.org/MIS

23 THURSDAY, SEPTEMBER 10 LIVE PROGRAM

2:00 – 3:00 pm CT Soft Tissue Balance: The Future Ain’t What It Used to Be Glenn B. Pfeffer, MD Symposium: Battle of the Bunions: Why My Way of Fixing Bunions Is Best Calcaneal Osteotomy: 2D or Not 2D? That Is the Question Moderator: James R. Holmes, MD Max Michalski, MD Lapidus Osteotomy Techniques: Is There Anything New James R. Holmes, MD Under the Sun? Jeffrey E. Johnson, MD Proximal Opening Wedge Glenn B. Pfeffer, MD The Peroneals: How to Make Something from Nothing Steven M. Raikin, MD Proximal Rotational Osteotomy Emilio Wagner, MD Discussion SCARF Peter Bock, MD 6:00 – 7:00 pm CT Ludloff Keynote Presentation: Steven K. Neufeld, MD Preventing Physician Suicide Pamela L. Wible, MD Distal Minimally Invasive Osteotomy A. Holly Johnson, MD In between treating patients and helping doctors launch community clinics, Dr. Discussion Wible devotes herself to the prevention of medical student and physician suicide. 3:00 – 4:00 pm CT Her extensive database from investigating Symposium: Tackling the Stage IV Flatfoot nearly 1,300 doctor suicides reveals Moderator: Steven L. Haddad, MD the highest-risk specialties and ways individuals and institutions can prevent these deaths. Join Salvage in the Stage IV Flatfoot Jonathan T. Deland, MD

How to Deal with the Malunited Triple 7:00 – 8:00 pm CT Jeffrey D. Seybold, MD Symposium: Prevention and Management of Managing Deformity with the Total Ankle Physician Burnout Mark E. Easley, MD Moderator: Casey J. Humbyrd, MD Concomitant Deltoid Reconstruction and Total Ankle Work-Life Balance Steven L. Haddad, MD Katherine Sage, DO Deltoid in a Single Stage vs. Two Approach to Ankle Valgus Pressure to Publish Timothy R. Daniels, MD Sandra E. Klein, MD Discussion Government Regulation Michael S. Aronow, MD 4:00 – 5:00 pm CT Pressures on Private Practice Entrepreneurship Virtual Exhibit Hall/OnDemand Programming Bruce E. Cohen, MD Explore products and services in the Virtual Exhibit Hall, Burnout Rates Among General Orthopaedic Surgeons or earn additional credit with OnDemand Education and Subspecialists Sessions. Robert Nugent, DO

5:00 – 6:00 pm CT Discussion Symposium: Charcot Marie Tooth: The Cutting Edge Moderator: Glenn B. Pfeffer, MD 8:00 – 9:30 pm CT Industry Symposia A Neurologist’s Overview of CMT Surgery Richard Lewis, MD (See page 18 for more information) Contracture Release and the Medial Hindfoot: The Sine Qua Non Paul T. Fortin, MD

24 Program subject to change. FRIDAY, SEPTEMBER 11

12:30 – 1:00 pm CT 2:30 – 4:00 pm CT Research Presentation: Kenneth A. Johnson Symposium on Controversies Lessons Learned in the Transition in Foot and Ankle Surgery to Value Based Health Care Moderator: Bryan D. Den Hartog, MD Kevin J. Bozic, MD, MBA Kenneth A. Johnson Dr. Bozic is a nationally recognized leader International Speaker in orthopaedic surgery and value-based Martinus Richter, MD, PhD healthcare. His research interests include healthcare technology assessment, Dr. Richter is the head of the Department cost-effectiveness analysis, and the implementation and of Foot and Ankle Surgery at Hospital evaluation of value-based payment and delivery models. Rummelsberg in Germany. He is an internationally renowned surgeon and innovator and a driving force in 1:00 – 2:30 pm CT scientific research. Symposium: Measuring What Matters in Orthopaedic Surgery Arthroscopic Brostrom vs. Not Moderators: Harold B. Kitaoka, MD, and Peter G. Mangone, MD; Mark C. Drakos, MD Mohit Bhandari, MD, PhD Minimally Invasive Bunion vs. Open Assessing Satisfaction in Foot and Ankle Surgery Rebecca A. Cerrato, MD; Matthew M. Roberts, MD Alastair S.E. Younger, MBChB, ChM Arthroscopic Ankle Fusions vs. Open Using Legacy Scores: Is There Still a Role and What Andrea N. Veljkovic, MD, MPH; David S. Levine, MD Scores Should We Use? Haglund’s Resection vs. Not Vinod K. Panchbhavi, MD Phinit Phisitkul, MD; Rachel J. Shakked, MD The PROMIS Outcomes Scores: Is This the Gold Discussion Standard for the AOFAS?

Judith F. Baumhauer, MD, MPH, MS 4:00 – 5:30 pm CT Foot and Ankle Registries: What We Have Learned Industry Symposia and Where We Go from Here (See page 18 for more information) Kenneth J. Hunt, MD

Getting Started with Clinical Outcome Collection 5:30 – 5:55 pm CT Daniel Guss, MD, MBA Award-Winning Paper Presentations Can Artificial Intelligence Provide Value in Recipients of the Roger A. Mann, J. Leonard Goldner, Orthopaedic Surgery? and IFFAS Awards Nelson F. SooHoo, MD

SAVE THE DATE Allied Health Virtual Course December 11, 2020

Focused education for physical therapists, physician assistants, nurse practitioners, and other members of the orthopaedic team.

Watch aofas.org/allied for details and registration.

25 FRIDAY, SEPTEMBER 11 LIVE PROGRAM

5:55 – 6:55 pm CT 6:55 – 7:10 pm CT Presidential Remarks, Foundation Update, and AOFAS Business Meeting Award Presentations Voting conducted electronically prior to meeting Outgoing Presidential Remarks William C. McGarvey, MD 7:10 – 8:10 pm CT Symposium: Bone Loss Deformity Arthritis: Introduction of Incoming President Christopher W. DiGiovanni, MD Modern Use of External Fixation and Other Contemporary Methods Incoming Presidential Remarks Moderator: William C. McGarvey, MD Bruce E. Cohen, MD Military and Battlefield Uses of External Fixation Foundation Update Joseph R. Hsu, MD Scott J. Ellis, MD Tibial and Ankle Bone Loss Management Presentation of the Diamond Mission Partner Award Douglas N. Beaman, MD to Wright Medical Group N.V. Scott J. Ellis, MD Ankle and Subtalar Joint Distraction Arthroplasty Austin T. Fragomen, MD Women’s Leadership Presentation Naomi N. Shields, MD, Career Impact Award Recipient Deformity Correction and Total Joint Arthroplasty Paul T. Fortin, MD Women’s Leadership Presentation Laura K. Dawson, DO, Career Development Discussion Award Recipient 8:10 – 9:40 pm CT Industry Symposia (See page 19 for more information)

Women’s Leadership Awards The Women’s Leadership Initiative supports and encourages women in foot and ankle orthopaedic surgery. As part of the initiative, female leaders in foot and ankle orthopaedics are honored annually with the Women’s Leadership Awards. Two awards are being presented in 2020: n Career Impact Award, recognizing women who have made exceptional contributions to the field of orthopaedic foot and ankle surgery n Career Development Award, supporting the professional aspirations of early- and mid-career female orthopaedic foot and ankle surgeons

Career Impact Award Career Development Award Naomi N. Shields, MD, is a highly Laura K. Dawson, DO, exemplifies regarded orthopaedic surgeon and dedication, leadership, and strength. humanitarian. After serving in the Dr. Dawson completed her orthopaedic military, she was the first woman in the surgery residency at Texas Tech orthopaedic surgery residency program University Health Service Center and a at Wilford Hall USAF Medical Center foot and ankle orthopaedic fellowship in Texas and went on to complete at the University of Rochester Medical a foot and ankle fellowship at the Center. Currently, she serves as the Medical College of Wisconsin. Dr. Shields is a role model United States Corps of Cadets Senior Medical Officer in the orthopaedic community and continues to give and an orthopaedic surgeon at Keller Army Community back by participating in the Orthopaedic Foot & Ankle Hospital in West Point, New York. Prior to her medical Foundation’s Overseas Outreach Project to Vietnam and career, Dr. Dawson received five awards for exemplary other humanitarian missions. military service.

2020 funding for the Women’s Leadership Initiative is provided by the Orthopaedic Foot & Ankle Foundation, supported in part by a grant from Treace Medical Concepts, Inc. Additional funding for online CME and the Physician Wellness Webinar Series provided by Wright Medical Group N.V. 26 Program subject to change. SATURDAY, SEPTEMBER 12

8:00 – 9:30 am CT Noon – 1:00 pm CT Industry Symposia Symposium: Managing Fractures in the Elderly (See page 19 for more information) Moderator: Jason T. Bariteau, MD Alternate Fixation Techniques 9:30 – 10:30 am CT Samuel B. Adams, MD Symposium: Novel Coronavirus COVID-19 Moderators: Harold B. Kitaoka, MD, and William C. The Fracture Is Fixed: What Next? Kevin L. Kirk, DO McGarvey, MD Current Evidence and Evolving Strategies Managing Pain Medication After Surgery Mohit Bhandari, MD, PhD Kelly K. Hynes, MD Emerging COVID-19 Research Managing Foot Fractures Andrew D. Badley, MD Jacob R. Zide, MD Development of an Effective COVID-19 Vaccine Managing Ankle Fractures with Osteoporosis Eric M. Bluman, MD, PhD Kelly C. Stéfani, MD, PhD Discussion Discussion

10:30 – 11:30 am CT 1:00 – 2:00 pm CT Symposium: Optimizing Technology in Radiology to Symposium: What Is the Best Total Ankle Treat Foot and Ankle Patients Replacement and Why? Moderator: Carolyn M. Sofka, MD Moderator: Constantine A. Demetracopolus, MD Ultrasound and Guided Injections to Optimize Foot and Zimmer Biomet Trabecular Metal™ Lew C. Schon, MD Ankle Diagnoses and Treatment Manickam Kumaravel, MD Cadence® Total Ankle System David I. Pedowitz, MD, MS Weightbearing CT Technology Cesar de Cesar Netto, MD, PhD INFINITY™ / INBONE™ Total Ankle System Jeremy J. McCormick, MD SPECT CT in Foot and Ankle Surgery Charles L. Saltzman, MD Vantage® Total Ankle System (Exactech) Mark E. Easley, MD MRI: Especially for OCLs, Technique, Critical Review of Papers STAR™ Ankle Carolyn M. Sofka, MD David B. Thordarson, MD Discussion Salto Talaris® Ankle Mark P. Slovenkai, MD 11:30 am – noon CT Discussion PED Talk: Management of the NBA Player with Foot and Ankle Injuries Martin J. O’Malley, MD Dr. O’Malley specializes in reconstructive surgery of the foot and ankle with special emphasis on sports medicine. He has operated on athletes from all professional sports and serves as team physician for the Brooklyn Nets, USA Basketball, and Iona College.

27 SATURDAY, SEPTEMBER 12 RESIDENT PROGRAM

Organized by the AOFAS Young Physicians Committee and AOFAS Postgraduate Education and Training Committee. Funding provided by the Orthopaedic Foot & Ankle Foundation, supported by grants from Arthrex, Inc., Stryker, and Wright Medical Group N.V.

8:00 – 10:00 am CT 10:00 – 10:15 am CT Colloquium Break Opening Remarks Pamela C. Luk, MD, AOFAS Young Physicians 10:15 am – 12:15 pm CT Committee Chair Case-Based Discussions Discuss cases in an informal, virtual roundtable setting. Foot and Ankle Fellowships Residents will be separated into virtual meeting rooms James R. Holmes, MD based on training year. Road to Foot and Ankle Research Topics: Christopher E. Gross, MD n Hallux Valgus Foot and Ankle Trauma: Talar and Calcaneal Fractures n Amanda J. Fantry, MD Lateral Ligament Reconstruction with Peroneal Tendon and SPR Reconstruction Foot and Ankle Sports: Tendon Injuries and Instability n Kenneth M. Chin, MD Flatfoot Reconstruction Closing Remarks Amgad M. Haleem Amin, MD, PhD, AOFAS Young Physicians Committee Vice Chair

FREE RESIDENT WEBINAR Foot and Ankle Resident Review Webinar October 14, 2020

Free for orthopaedic residents, this webinar features an overview of key foot and ankle concepts to help you prepare for exams. The webinar also includes questions from the Orthopaedic In-Training Examination (copyright by American Academy of Orthopaedic Surgeons, used with permission).

Visit aofas.org/webinars for details and registration.

Want more free foot and ankle education for residents? Check out AOFAS Resident Resources at aofas.org/residentresources

28 RESIDENT PROGRAM

SAVE THE DATE

join us next year for Annual Meeting in Vancouver

Credit: Tourism Vancouver / Kazutoshi Yoshimura

AOFAS Annual Meeting 2021 September 22-25, 2021 Vancouver Convention Centre Vancouver, British Columbia, Canada aofas.org/annualmeeting ONDEMAND PROGRAM

Earn continuing education credit at your convenience! AOFAS at Home registrants can access OnDemand Sessions in the AOFAS at Home virtual platform through March 31, 2021.

SYMPOSIUM: GUEST NATION: CHILE PAPER SESSION 1A: FOREFOOT Moderator: Emilio Wagner, MD Moderators: Monica Volesky, MD, and Timothy P. Charlton, MD Hallux Valgus Pablo Wagner, MD Comparison of Outcomes of Cheilectomy With and Without Synthetic Hydrogel Interposition (Cartiva®) Flexible Flatfoot , MD; Daniel J. Scott, MD, MBA; Shannon Jorge Filippi, MD, MBA Samuel E. Ford F. Alejandro, MD; David D. Vier, MD; Jacob R. Zide, MD; Flexible Cavovarus James W. Brodsky, MD Cristian A. Ortiz, MD ROGER A. MANN AWARD FINALIST Osteochondral Lesions of the Talus Adverse Events Related to Polyvinyl Alcohol Hydrogel Manuel J. Pellegrini, MD Hemiarthroplasty of 1st Metatarsal: An Analysis of Reports to the United States Food and Drug Administration Calcaneal Fractures ; Karim Mahmoud Khamis, Eduardo Fuentes Morales, MD Sreenivasulu Metikala, MD MBBCh; Kathryn O’Connor, MD; Wen Chao, MD; Keith L. Wapner, MD; Daniel C. Farber, MD SYMPOSIUM: CODING AND PRACTICE MANAGEMENT Cartiva: A Retrospective Multicenter Report Moderator: John A. DiPreta, MD Nicholas Casscells, MD; Daniel M. Dean, MD; Paul S. Cooper, MD; Stuart D. Miller, MD; Gregory P. Guyton, MD COVID-19 Economic Impact on a Foot and Ankle Practice Aaron J. Guyer, MD Assessing Hallux Valgus Using Automatically Segmented Weight Bearing CT Datasets: A Case-Control Study E/M 2021 Updates and Rules Francois Lintz, MD; Alessio Bernasconi, MD; Céline R. Dale Blasier, MD Fernando; Cesar de Cesar Netto, MD, PhD Appropriate Use Criteria (AUC) for Advanced Diagnostic Evaluation of a Weightbearing CT Artificial Imaging Intelligence-Based Automatic Measurement System Tye Ouzounian, MD for the M1-M2 Intermetatarsal Angle in Hallux Valgus: A Case-Control Study Jonathan Day, MS; Francois Lintz, MD; Martinus Richter, HUMANITARIAN SERVICE SYMPOSIUM: MD, PhD; Céline Fernando; Scott J. Ellis, MD; Jonathan T. INTERNATIONAL EXPERIENCE ON ANKLE FRACTURE Deland, MD; Cesar de Cesar Netto, MD, PhD Moderator: John Y. Kwon, MD Weightbearing AP Radiographs Do Not Accurately Predict Pronation of the First Metatarsal Measured on Orthopaedic Surgery in Malawi Kiran Agarwal-Harding, MD Weightbearing CT Scans Matthew S. Conti, MD; Kristin C. Caolo, BA; Mark C. My Experiences with Ankle Fracture Management as a Miller, PhD; Stephen F. Conti, MD; Scott J. Ellis, MD Malawian Orthopaedic Surgeon Leonard Banza, MD J. LEONARD GOLDNER AWARD FINALIST Does Lag Screw Retightening Improve Compression in Treating Ankle Fractures During a Short-Term Trip to Kenya Hindfoot Arthrodesis? Daniel C. Farber, MD Amanda Rugg, BS; Melissa Requist; Brooks Johnson; Michelle Son, MD; Alicia Alvarez; L. Daniel Latt, MD, PhD My Experiences Managing Ankle Fractures in India Rajiv S. Shah, MS(Orth) Please Fix My Ankle: Perspectives of an Ankle Fracture Patient in Ethiopia Eric C. Gokcen, MD Ankle Trauma in Vietnam: Not Always What You Expect J. Turner Vosseller, MD

30 Abstracts available for viewing in the AOFAS mobile app.

PAPER SESSION 1B: PAPER SESSION 2A: FLATFOOT PRACTICE MANAGEMENT & MISC. Moderators: Sara L. Miniaci-Coxhead, MD, Moderator: Eric M. Bluman, MD, PhD and Irvin Oh, MD

Medical Malpractice Trends in Foot and Ankle Surgery Correlation Between Three-Dimensional Biometric Rishin J. Kadakia, MD; Keith Orland; Akhil Sharma, Weightbearing CT Assessment of Hindfoot Alignment and BSc(Med); Jie Chen, MD, MPH; Craig C. Akoh, MD; Conventional Measurements of Adult Acquired Flatfoot Selene G. Parekh, MD, MBA Nacime S. Mansur, MD; Cesar de Cesar Netto, MD, PhD; Katrina E. Bang; Chris Cychosz, MD; Jonathan H. Garfinkel, Geographic Distribution of Foot and Ankle Orthopaedic MS; Francois Lintz, MD; Alessio Bernasconi, MD; Jonathan Surgeons Throughout the United States T. Deland, MD; Scott J. Ellis, MD Hui Zhang, MD; Matthew G. Fanelli, MD; Coleman Cush; Benjamin Wagner, MD; Louis C. Grandizio; Amanda Young; The Effect of Lateral Column Lengthening on Subtalar Bhumika Maddineni; Gerard J. Cush, MD Motion: Are We Trading Deformity for Stiffness? Brittany Hedrick; Anthony Riccio; Danielle M. Thomas, MD; Prescribing Fewer Opioid Pills to Patients Undergoing Foot Claire Shivers; Matthew Siebert; William A. Pierce; Mitchell and Ankle Surgery: A Prospective Comparative Study Harris, MD; Jacob R. Zide, MD Kristin C. Caolo, BA; Jonathan Day, MS; Celia Marion; Gabrielle S. Ray, BA; A. Holly Johnson, MD The Efficacy of Surgical Treatment in the Correction of Adult Acquired Flatfoot Deformity: A Three-Dimensional Biometric Economic Analysis and Surgical Outcomes of Outpatient Weightbearing Computed Tomography Evaluation versus Inpatient Total Ankle Replacement Surgery Cesar de Cesar Netto, MD, PhD; Jonathan Day, MS; Craig C. Akoh, MD; Jie Chen, MD, MPH; Rishin J. Kadakia, Alexandre L. Godoy-Santos, MD; Jonathan H. Garfinkel, MD; Amanda N. Fletcher, MD; Mark E. Easley, MD; Samuel MS; Chris Cychosz, MD; Francois Lintz, MD; Alessio B. Adams, MD; James A. Nunley II, MD; James K. DeOrio, Bernasconi, MD; Danilo Ryuko Nishikawa, MD; Scott J. MD; Young-uk Park, MD, PhD; Hyong Nyun Kim, MD, PhD; Ellis, MD; Jonathan T. Deland, MD Juntao Wang, MD, PhD Posterior vs. Middle Facet of the Subtalar Joint: Contamination Profile of the Mini C-Arm Fluoroscopy Unit The Search for an Early Sign of Peritalar Subluxation in Orthopedic Surgery and Progressive Flatfoot Deformity Kaveh Momenzadeh, MD; Caroline Williams, MS; Natalia Cesar de Cesar Netto, MD, PhD; Thiago A. Silva, MD; Czerwonka; Mohammad Mehdi Alemi; John Y. Kwon, MD; Shuyuan Li, MD, PhD; Kevin N. Dibbern, PhD; Nacime Ara Nazarian, PhD; Christopher P. Miller, MD, MHS S. Mansur, MD; Francois Lintz, MD; Chris Cychosz, MD; ROGER A. MANN AWARD FINALIST Alexandre L. Godoy-Santos, MD; John E. Femino, MD; Comparative Postoperative Outcomes Between Positive Daniel Baumfeld, MD and Negative Electromyography (EMG) in Patient with Relationship Between Middle Facet Peritalar Subluxation Tunnel Syndrome: A Retrospective Study and the Severity of Flatfoot Deformity Chamnanni Rungprai, MD; Tanarat Hempongphan; Daniel Baumfeld, MD; Thiago A. Silva, MD; Shuyuan Li, Yantarat Sripanich, MD; Warongporn Pongpinyopap, MD; MD, PhD; Nacime S. Mansur, MD; Kevin N. Dibbern, Pisit Boonma, MD PhD; Chris Cychosz, MD; Francois Lintz, MD; Alexandre J. LEONARD GOLDNER AWARD FINALIST L. Godoy-Santos, MD; Jessica E. Goetz, PhD; John E. Biomechanical Effects of Δ9-Tetrahydrocannabinol (THC) Femino, MD; Cesar de Cesar Netto, MD, PhD and Cannabidiol (CBD), the Major Constituents of The Influence of Preoperative Deformity Severity in Cannabis, in a Sprague Dawley Rat Achilles Tendon Postoperative Patient Reported Outcomes in Adult Surgical Repair Model Acquired Flatfoot Chris M. Stauch; Brittany Ammerman; Diana E. Bopha Chrea, MD; Cesar de Cesar Netto, MD, PhD; Sepulveda; Michael C. Aynardi, MD; Matthew Garner; Jonathan H. Garfinkel, MS; Jonathan Day, MS; Guilherme Gregory Lewis, PhD; Daniel Morgan; Aman Dhawan, MD H. Saito, MD; Shuyuan Li, MD, PhD; Francois Lintz, MD; Jonathan T. Deland, MD; Scott J. Ellis, MD Is Lateral Impingement a Good Predictor of Peritalar Subluxation in Patients with Adult Acquired Flatfoot Deformity? Daniel Baumfeld, MD; Thiago A. Silva, MD; Shuyuan Li, MD, PhD; Alexandre L. Godoy-Santos, MD; Francois Lintz, MD; Nacime S. Mansur, MD; Kevin N. Dibbern, PhD; John E. Femino, MD; Cesar de Cesar Netto, MD, PhD

31 ONDEMAND PROGRAM

PAPER SESSION 2B: OUTCOMES PAPER SESSION 3A: Moderators: Lan Chen, MD, SPORTS/OSTEOCHONDRAL DEFECTS and Amgad M. Haleem Amin, MD, PhD Moderators: Joan R. Williams, MD, and Steve B. Behrens, MD Great Expectations: Predicting Postoperative Expectation Fulfillment in Orthopaedic Foot and Ankle Patients Arthroscopic Bone Marrow Stimulation for the Treatment Jensen K. Henry, MD; Andrew R. Roney, BA; Amelia of Osteochondral Lesions of the Talus Shows Promising Hummel; Elizabeth Cody, MD; Carol A. Mancuso, MD; Clinical Outcomes Over 10 Years Scott J. Ellis, MD Jae Han Park, MD; Jin Woo Lee, MD, PhD; Kwang Hwan Associations Between Baseline PROMIS Scores, Patient- Park, MD, PhD; Sang B. Kim; Yoo Jung Park, MD; Seung Provider Communication Factors, and Musculoskeletal Hwan Han, MD, PhD Health Literacy on Differences in Patients’ and Surgeons’ Comparison of Microfracture with Extracellular Matrix Expectations in Foot and Ankle Surgery Augmentation and Osteochondral Autograft Transplantation Aoife MacMahon, BA; Elizabeth Cody, MD; Kristin C. for the Treatment of Medium-Size Osteochondral Lesions Caolo, BA; Jensen K. Henry, MD; Mark C. Drakos, MD; of the Talus Constantine A. Demetracopoulos, MD; A. Holly Johnson, Oliver B. Hansen; Stephanie K. Eble; Taylor Cabe, BA; MD; Matthew M. Roberts, MD; Jonathan T. Deland, MD; Karan A. Patel; Jonathan T. Deland, MD; Carolyn M. Sofka, Oleksandr Savenkov, PhD; Scott J. Ellis, MD MD, FACR; Mark C. Drakos, MD Impact of Patient Diagnosis on Expectation Fulfillment in The Effect of Supramalleolar Osteotomy Without Orthopaedic Foot and Ankle Surgery Marrow Stimulation on Cartilage Regeneration for Jensen K. Henry, MD; Andrew R. Roney, BA; Amelia Medial Compartment Ankle Osteoarthritis: Second-Look Hummel; Carol A. Mancuso, MD; Elizabeth Cody, MD; Arthroscopic Evaluation of Cartilage Regeneration Scott J. Ellis, MD Jung-Won Lim, MD; Hong-Geun Jung, MD, PhD ROGER A. MANN AWARD FINALIST Talar Osteonecrosis After Subchondroplasty for Acute Application of Computerized Adaptive Testing to the Lateral Ligament Injuries: A Small Case Series Foot and Ankle Ability Measure Ian Foran, MD; Daniel D. Bohl, MD, MPH; Anand M. Vora, Joseph T. O’Neil, MD; Otho R. Plummer, PhD; MD; Nasima Mehraban; Kamran S. Hamid, MD, MPH; Steven M. Raikin, MD Simon Lee, MD ® Relationship of Press Ganey Satisfaction and PROMIS J. LEONARD GOLDNER AWARD FINALIST Function and Pain in Foot and Ankle Patients Inhibition of HMGB1 by Metformin Prevents Mechanical Devon C. Nixon, MD; Chong Zhang, MS; Overloading-Induced Tendinopathy Maxwell Weinberg, BSc; Angela Presson, PhD; Jianying Zhang, PhD; Feng Li, MD, PhD; Daibang Nie, Florian Nickisch, MD PhD; Kentaro Onishi, DO; MaCalus V. Hogan, MD, MBA; Patient-Reported and Radiographic Outcomes in James H. Wang, PhD Primary and Revision Stage II, III, and IV Adult Acquired Flatfoot Deformity Surgery PAPER SESSION 3B: MISC. Rusheel Nayak, BA; Milap Patel, DO; Anish R. Kadakia, MD Moderators: Michael C. Greaser, MD, and Taggart T. Gauvain, MD Predictors of Improvement in Patient Outcomes After Fasciotomy for Chronic Exertional Compartment Comparison of Change in Hindfoot Alignment with Syndrome of the Lower Leg Coleman Block Testing Using Clinical Exam, X-Ray, and John J. Mangan, MD; Ryan G. Rogero, BS; Weightbearing CT Daniel Corr; Daniel J. Fuchs, MD; Joseph T. O’Neil, MD; Ian Foran, MD; Nasima Mehraban; Stephen K. Jacobsen, Steven M. Raikin, MD MD, MSc; Daniel D. Bohl, MD, MPH; Kamran S. Hamid, MD, MPH; Johnny L. Lin, MD; Simon Lee, MD The Influence of Calcaneal and First Ray Osteotomies in the Contact Pressures of the Ankle Joint Cesar de Cesar Netto, MD, PhD; Pooyan Abbasi, MSc; Niall A. Smyth, MD; Stuart Michnick, MD; Nicholas Casscells, MD; Constantine A. Demetracopoulos, MD; Danilo Ryuko Nishikawa, MD; Brent Parks, MSc; Stuart D. Miller, MD

32 Abstracts available for viewing in the AOFAS mobile app.

Influence of Topography on 3D-Printed Titanium Foot Prospective Comparison of Ankle Replacement and Ankle and Ankle Implants Arthrodesis 4 Years After Surgery Bijan Abar; Cambre N. Kelly; Nicholas B. Allen; Bruce J. Sangeorzan, MD; Daniel Norvell, PhD; William Helena Barber; Alexander P. Kelly; Ken Gall; R. Ledoux, PhD; J. Chris Coetzee, MD; James S. Davitt, Samuel B. Adams, MD MD; Jane Shofer, MS; John G. Anderson, MD; Donald R. Bohay, MD, FACS; Michael J. Houghton, MD; John D. A Biomechanical Evaluation of the Tibia After Retrograde Maskill, MD; Michael E. Brage, MD Intramedullary Reaming David J. Ciufo, MD; Denise Koueiter; Mariam Alsaleh; A Propensity Score-Matched Analysis Comparing Avianna E. Arapovic; Kevin C. Baker, PhD; Erin A. Baker, Outpatient and Short-Stay Hospitalization to Standard PhD; Paul T. Fortin, MD; Zachary M. Vaupel, MD Inpatient Hospitalization Following Total Ankle Arthroplasty Mark A. Plantz, BS; Alain E. Sherman, BA; Anish R. The Effect of Knee Flexion on Active and Passive Kadakia, MD Popliteal Venous Flow When Using Crutches or Knee Scooter While Immobilized Total Ankle Arthroplasty: Can Patients Read, Understand, Christopher W. Reb, DO; Edward T. Haupt, MD; and Act on Online Educational Resources? Gregory C. Berlet, MD, FRCSC, FAOA Alan G. Shamrock, MD; Burke Gao, MD; Trevor Gulbrandsen; John E. Femino, MD; Cesar de Cesar Netto, J. LEONARD GOLDNER AWARD FINALIST MD, PhD; Kyle R. Duchman, MD Next-Generation Sequencing for Pathogen Identification in Infected Foot Ulcers J. LEONARD GOLDNER AWARD FINALIST Yoonjung Choi; Irvin Oh, MD Mesenchymal Stem Cells Derived from Synovium and Fat Pad Are Able to Treat Induced Ankle Osteoarthritis in Rats? Soheil Ashkani-Esfahani, MD; Bart Lubberts, MD, PhD; PAPER SESSION 4A: TOTAL ANKLE I Rohan Bhimani, MD, MBA; Christopher W. DiGiovanni, MD Moderators: Pamela C. Luk, MD, and Christopher W. DiGiovanni, MD PAPER SESSION 4B: ROGER A. MANN AWARD FINALIST SPORTS ANKLE INSTABILITY The UK INFINITY Study: Early Experience and Moderators: Rachael J.A. Da Cunha, MD, Complications of a Multicenter Series of 504 Total and John T. Campbell, MD Ankle Arthroplasties David N. Townshend, MBBS, FRCS(Tr&Orth); Rajesh Preliminary Results of a Multicenter Prospective Kakwani; Murty N. Aradhyula; John C. Mckinley; Randomized Trial: Traditional Modified Brostrom versus Hisham Shalaby; Robert Smith; James H. Davenport, InternalBrace™ Augmentation FRCS(Tr&Orth); Michael Karski; Timothy Clough; Robert Kulwin, MD; Mallory Suhling; Ryan Rigby; Anand Chris Blundell, MD, FRCS; Howard Davies, MD; Martin M. Vora, MD; Troy S. Watson, MD Raglan, MD; Sunil Dhar, MBBS, MS, MCh; Steve Hepple, MBChB; Heath Taylor; James Davis, MD; Ian T. Sharpe, Using Dynamic Portable Ultrasonography for the Diagnosis MD; Andrew J. Bing; Andrew J. Goldberg, MD, MBBS, of Lateral Ankle Instability FRCS(Tr&Orth) Jirawat Saengsin; Rohan Bhimani, MD, MBA; Go Sato; Noortje Hagemeijer, MD; Bart Lubberts, MD, PhD; Gregory Do Total Ankle Replacements Have Worse Outcomes R. Waryasz, MD; Daniel Guss, MD, MBA; Christopher W. when Compared to Total Knee and Hip Replacements at DiGiovanni, MD 10 Years Postoperatively?: A Prospective Clinical Study Jayasree Ramas Ramaskandhan, MPT, MSc; Malik S. Dynamic Evaluation of the Effect of Syndesmotic Injury on Siddique, FRCS (T&O); Karen Smith, MSc, BSc Lateral Ankle Stability Using Fluoroscopy Rohan Bhimani, MD, MBA; Go Sato; Jirawat Saengsin; Evaluation of True Ankle Motion Following Total Ankle Noortje Hagemeijer, MD; Bart Lubberts, MD, PhD; Gregory Replacement Utilizing XROMM Technology R. Waryasz, MD; Daniel Guss, MD, MBA; Christopher W. Emily M. Abbott; Zoe Merchant; Erica Lee; Sadie M. DiGiovanni, MD Abernathy; Charles Hammer; Young-Hui Chang; Jason T. Bariteau, MD Obesity as a Risk Factor for Failure Following a Modified Brostrom Procedure Daniel Corr; Ryan G. Rogero, BS; Justin E. Palm; Joseph N. Daniel, DO; Steven M. Raikin, MD; David I. Pedowitz, MD, MS

33 ONDEMAND PROGRAM

Conservative versus Surgical Treatment for the Using 3D Volume Measurements on Weightbearing Fifth Metatarsal Diaphyseal Fractures: Computed Tomography Scan to Diagnose A Retrospective Comparative Study Syndesmotic Instability Warongporn Pongpinyopap, MD; Rohan Bhimani, MD, MBA; Soheil Ashkani-Esfahani, MD; Chamnanni Rungprai, MD Bart Lubberts, MD, PhD; Daniel Guss, MD, MBA; Noortje Hagemeijer, MD; Gregory R. Waryasz, MD; Return to Play Following High-Grade Turf Toe Injuries in Christopher W. DiGiovanni, MD National Football League Athletes Benjamin B. Lindsey, MD; Neil K. Bakshi, MD; David M. Diagnostic Accuracy of Comparative Computed Walton, MD; James R. Holmes, MD; Paul G. Talusan, MD Tomography with Stress Maneuvers for Diagnosing Isolated Syndesmotic Instability in an Acute Ankle Sprain Mechanical Overload Followed by Consecutive João C. Rodrigues; Alexandre L. Godoy-Santos, MD; Collagenase Injections: Developing a Multifactorial Marcelo P. Prado, MD; José Felipe Marion Alloza, MD; and Long-Lasting Animal Model of Induced Achilles Renato do Amaral Masagao, MD; Laercio Rosemberg; Tendinopathy Durval d. Santos; Adham Castro; Marco K. Demange Cesar de Cesar Netto, MD, PhD; Zijun Zhang, MD; Mario Lobao Goncalves, MD; Chris Cychosz, MD; Portable Dynamic Ultrasonography versus Shuyuan Li, MD, PhD; Kyle R. Duchman, MD; Fluoroscopy for the Evaluation of Syndesmotic Instability: Jessica E. Goetz, PhD; John E. Femino, MD; A Cadaveric Study Ruth Chimenti, DPT, PhD; Lew C. Schon, MD Noortje Hagemeijer, MD; Bart Lubberts, MD, PhD; Jirawat Saengsin; Rohan Bhimani, MD, MBA; Go Sato; Gregory R. Waryasz, MD; Gino Kerkhoffs, MD; PAPER SESSION 5A: FOOT AND ANKLE TRAUMA Christopher W. DiGiovanni, MD Moderators: Amanda J. Fantry, MD,

and MaCalus V. Hogan, MD, MBA PAPER SESSION 5B: TOTAL ANKLE II Measuring the Total Cost of Ankle Fractures: Moderators: Todd A. Irwin, MD, A Prospective Analysis and Andrew J. Rosenbaum, MD Peter C. Noback; Tess Dougherty; Christina Freibott, BA; Eric F. Swart, MD; Melvin P. Rosenwasser, MD; Revision Total Ankle Replacement Using the Inbone 2 J. Turner Vosseller, MD System, Nottingham Experience Hatem Salem-Saqer, FRCS(Orth); Martin Raglan, MD; Vitamin D Deficiency and Outcomes After Ankle Fusion Sunil Dhar, MBBS, MS, MCh Deepak Ramanathan, MD; Mark J. Berkowitz, MD; Alan Davis, MD; Stephen J. Pinney, MD; Total Ankle Arthroplasty: Risk Factors for Subsequent Sara Lyn Miniaci-Coxhead, MD Flap Coverage Daniel J. Cunningham, MD; Sean Ryan, MD; Biomechanical Comparison of FiberTape Device Samuel B. Adams, MD Repair Techniques of Ligamentous Lisfranc Injury in Cadaveric Model Extensile Anteromedial Approach for Total Zachary Koroneos, BS; Emily Vannatta, BS; Ankle Arthroplasty Morgan S. Kim; Madelaine W. Fritsche, BSc; Shahin Kayum, MD, MRCS; Ryan M. Khan, PA; Trevin Cowman; Allen Kunselman, MA; Jong Min Lee, MD; Timothy R. Daniels, MD, FRCSC Gregory Lewis, PhD; Michael C. Aynardi, MD Influence of Comprehensive Joint Loads on Tibial Implant Does Hindfoot Valgus Deformity Affect the Distal Micromotion in Total Ankle Arthroplasty Tibiofibular Syndesmotic Space? Brett D. Steineman, PhD; Constantine A. Shuyuan Li, MD, PhD; Thiago A. Silva, MD; Daniel Demetracopoulos, MD; Jonathan T. Deland, MD; Baumfeld, MD; Nacime S. Mansur, MD; Tiago S. Baumfeld, Fernando Quevedo Gonzalez, PhD; Daniel R. Sturnick, MS; MD; Kevin N. Dibbern, PhD; Francois Lintz, MD; Kyle R. Timothy Wright Duchman, MD; John E. Femino, MD; Cesar de Cesar Tibial Torsion and Ankle Arthritis: Is External Tibial Netto, MD, PhD Rotation Associated with Varus Deformity in Patients with Ankle Arthritis? Collin C. Barber, MD; Teresa Hall; Tyler Madden; Parin D. Kothari; Monica LaPointe; John G. Anderson, MD; Donald R. Bohay, MD, FACS; John D. Maskill, MD; Michelle A. Padley, MS

34 AUDIO POSTERS

Stay current on the latest foot and ankle research with the AOFAS at Home audio poster presentations. Each presentation includes narration from an author of the study. View audio posters and earn CME credit in the virtual platform through March 31, 2021.

ANKLE Cost Comparison of Suture Anchor Modified Broström Repair and Augmentation of the Modified Broström A New Method for Reduction and Stabilization of the with FiberTape Device Distal Tibiofibular Syndesmosis Emily Vannatta, BS; Chris M. Stauch; Jesse King, BSc; Andres E. O’Daly Baquero, MD; Timothy R. Kreulen, MD; Morgan S. Kim; Laura R. Luick; Shawn M. Bifano, MD; Babar Shafiq; Erik A. Hasenboehler, MD; Paul J. Juliano, MD; Umur Aydogan, MD; Alfred Pisano, MD Michael C. Aynardi, MD

Anatomic Structures at Risk During Posterior to Diagnosing the Impact of the Syndesmotic Injury on Anterior Percutaneous Screw Fixation of Posterior Lateral Ankle Stability Using Dynamic Ultrasound Malleolar Fractures: A Cadaveric Study Rohan Bhimani, MD, MBA; Jirawat Saengsin; Go Sato; Kaveh Momenzadeh, MD; Natalia Czerwonka; Derek S. Noortje Hagemeijer, MD; Bart Lubberts, MD, PhD; Stenquist; Seth W. O’Donnell, MD; John Y. Kwon, MD; Daniel Guss, MD, MBA; Christopher W. DiGiovanni, MD; Ara Nazarian, PhD; Christopher P. Miller, MD, MHS Gregory R. Waryasz, MD

Bilateral Comparison of the Three-Dimensional Distance Mapping of the Foot and Ankle Joints Using Configuration in the Normal Ankle Syndesmosis: A Weightbearing CT: The Cavovarus Configuration Non-Weightbearing and Weightbearing CT Analysis Francois Lintz, MD; Maui Jepsen, BSc; Cesar de Cesar Arne Burssens, MD; Matthias Peiffer; Alexej Barg, MD; Netto, MD, PhD; Alessio Bernasconi, MD; Maria Ruiz, BSc; Wouter Huysse; Yantarat Sripanich, MD; Sorin Siegler, PhD Aline C. Van Oevelen; Kristian Buedts, MD; Emmanuel Audenaert, MD, PhD Does a Fibula-Sparing Approach Improve Outcomes in Tibiotalocalcaneal Arthrodesis? Can Patient Effort Influence Sensitivity and Specificity Mark Wu, MD; Daniel J. Scott, MD, MBA; Adam P. Schiff, of the Gravity Stress View? Assessing the Potential for MD; Manuel J. Pellegrini, MD; James K. DeOrio, MD; False Negative Results James A. Nunley II, MD; Samuel B. Adams, MD Kimberly K. Broughton, MD; Christopher P. Miller, MD, MHS; Caroline Williams, MS; Kristen L. Stupay, MD; Effect of Distal Tibial Varus and Valgus Deformity on John Y. Kwon, MD Tibiotalar Joint Contact Zhao Hong-Mou, MD, PhD Can Reducing Implant Costs Increase Revenue for Surgically Treated Ankle Fractures: Time Driven Efficacy of the Glidepath Technique for Ankle Activity Based Costing for 1 year Episode of Care Syndesmosis Reduction Will Freking; Bandele Okelana; Logan J. McMillan; Alicia M. Unangst, DO; Paul M. Ryan, MD; Mitchell Harris, Kendra Kibble; Harsh R. Parikh; Brian P. Cunningham, MD MD; Daniel Song, MD

Changes in the Plantarflexion Moment Arm of the Evaluation of the Anterior Talofibular Ligament by Achilles Tendon Following Total Ankle Arthroplasty Stress Ultrasound for Assessing Generalized Joint Francesca E. Wade; Gregory Lewis, PhD; Andrea H. Hypermobility Horne; Lauren Hickox; Michael C. Aynardi, MD; Paul J. Jaehwang Song, MD; Chan Kang, MD; Je Hyung Jeon; Juliano, MD; Umur Aydogan, MD; Stephen J. Piazza, PhD Chang Uk Ham

Correction of Talar Sagittal Alignment in Total Factors Affecting Emergency Department Visits, Ankle Replacement Using Cadence Biased Readmissions, and Reoperations within 30 Days Polyethylene Insert of Ankle Fracture Surgery: An Institutional Shahin Kayum, MD, MRCS; Ryan M. Khan, PA; Retrospective Study Timothy R. Daniels, MD, FRCSC John C. Prather, MD; Bradley Alexander, BS; Jared R. Halstrom, BS; Charles R. Sutherland; Akshar Patel, BS; Gerald McGwin, PhD; Ashish Shah, MD

35 AUDIO POSTERS

Fracture of the Posteromedial Tubercle of the Talus: Portable Dynamic Ultrasonography Is a Useful Tool Case Series of Fifteen Patients Along with Cadaveric for the Evaluation of Suspect Syndesmotic Instability: Dissection and Anatomic Considerations for Surgical A Cadaveric Study Approach Noortje Hagemeijer, MD; Rohan Bhimani, MD, MBA; Andrew M. Steffensmeier; Robert Matar; David Chung; Jirawat Saengsin; Bart Lubberts, MD, PhD; Gregory Ruixian A. Yue, MD; Tonya L. Dixon, MD, MPH; Claude R. Waryasz, MD; Gino Kerkhoffs, MD; Christopher W. Sagi; Richard T. Laughlin, MD DiGiovanni, MD

Functional Outcomes and MRI Results Following Preoperative Depression Influences Outcomes Knotless Repair of Acute Achilles Tendon Ruptures Following Total Ankle Arthroplasty Brian D. Steginsky, DO; Mallory Suhling; Eric Giza, MD; Jacob M. Wilson, MD; Andrew M. Schwartz; Kevin X. Christopher D. Kreulen, MD, MS; B. Dale Sharpe Jr., DO; Farley; Jason T. Bariteau, MD Anand M. Vora, MD Recurrence of Syndesmotic Diastasis Following Immediate Weight Bearing and Range of Motion Syndesmotic Screw Removal: Does the Time Point of After Internal Fixation of Unstable Ankle Fractures: Screw Removal Matter? A Retrospective Controlled Study Hans Polzer, MD; Seth C. Shoap, BA, BS; Sebastian F. Brianna R. Fram, MD; Ryan G. Rogero, BS; Daniel Corr; Baumbach, MD; Viktoria Herterich, MD; Christina Freibott, Gerard Chang; James Krieg, MD; Steven M. Raikin, MD BA; J. Turner Vosseller, MD

Intramedullary Fixation of Distal Fibula Fractures Return to Play After Arthroscopic Microfracture for Benjamin D. Umbel, DO; B. Dale Sharpe, DO; Terrence Osteochondral Lesions of the Talus in Young Elite M. Philbin, DO Athletes Sung-Jae Kim, MD, PhD; Kyung-tai Lee, MD, PhD Is It Safe to Offer Total Ankle Replacement (TAR) Surgery in Patients with Type II Diabetes? Risk Factors for Nonunion in Arthroscopic and Open Nicholas Hutt; Jack Allport, MBChB; Zuhaib Shahid; Ankle Arthrodesis Jayasree Ramas Ramaskandhan, MPT, MSc; Malik S. William T. Davis; Bradley Alexander, BS; Benjamin B. Siddique, FRCS (T&O) Cage; Elise M. Greco; Charles R. Sutherland; Hannah M. Barranco; Tanvee Sinha; Ashish Shah, MD Locomotor Function and Pain in Total Ankle Arthroplasty Patients at Six Months’ Follow-Up Safety and Efficacy of Tranexamic Acid in Total Ankle Francesca E. Wade; Gregory Lewis, PhD; Andrea H. Arthroplasty Horne; Lauren Hickox; Stephen J. Piazza, PhD; Michael C. Philip G. Ghobrial, BS; Daniel Schmitt; Nicholas M. Aynardi, MD; Paul J. Juliano, MD; Umur Aydogan, MD Brown; Michael S. Pinzur, MD; Adam P. Schiff, MD

Long-Term Outcomes of Microfracture for Treatment of Salvage Tibiotalocalcaneal Arthrodesis Augmented Osteochondral Lesions of the Talus with Fibular Columns and Iliac Crest Autograft: Daniel Corr; Jared Raikin, BS; Joseph T. O’Neil, MD; A Technical Note Steven M. Raikin, MD Alessio Bernasconi, MD; Shelain Patel, FRCS; Karan Malhotra, MRCS; Dishan B. Singh, MBChB, FRCS(Orth); Osteochondral Lesions of the Tibial Plafond: Matthew J. Welck, MD, FRCS(Orth); Nicholas Cullen, A Systematic Review FRCS(Orth) James J. Butler; Yoshiharu Shimozono, MD; Eoghan T. Hurley, MBBCh, BAO; John G. Kennedy, MD, FRCS(Orth) Short-Term Complications Following Early Protected Weight Bearing After Flatfoot Reconstruction when Outcomes of Suture-Button Fixation for Treatment Utilizing a Fibertape Device for Spring Ligament of Maisonneuve Injuries Reefing Augmentation Rabun S. Fox, MD; Ryan G. Rogero, BS; Daniel Corr; Morgan S. Kim; Emily Vannatta, BS; Chris M. Stauch; Steven M. Raikin, MD; David I. Pedowitz, MD, MS; Joseph Paul J. Juliano, MD; Michael C. Aynardi, MD Larwa; Joseph T. O’Neil, MD; Daniel J. Fuchs, MD

Periprosthetic Fracture of the Talus Following Total Ankle Replacement: A Case Series Jonathan Day, MS; Jaeyoung Kim, MD; Scott J. Ellis, MD; Jonathan T. Deland, MD; Martin J. O’Malley, MD; Constantine A. Demetracopoulos, MD

36 Abstracts available for viewing in the AOFAS mobile app.

Syndesmosis Injuries in Ankle Fractures: Correlation Effects of Supramalleolar Osteotomy on Abnormal of Fracture Type and Syndesmotic Instability Internal Rotation of the Talus in Varus Ankle Christina Freibott, BA; Seth C. Shoap, BA, BS; Sebastian F. Osteoarthritis Baumbach, MD; Kathrin Rellensmann, MD; Rami Alrabaa, Jaehwang Song, MD; Chan Kang, MD; Je Hyung Jeon; MD; Hans Polzer, MD; Justin K. Greisberg, MD; Chang Uk Ham J. Turner Vosseller, MD Establishing Maximal Subjective Outcome The 3D Printed Total Talus Replacement: A Novel Improvement After Total Ankle Arthroplasty Treatment Option for Avascular Necrosis of the Talus Avinesh Agarwalla; Kaisen Yao; Anirudh Gowd, BS; Rishin J. Kadakia, MD; Craig C. Akoh, MD; Jie Chen, MD, Elizabeth Cody, MD; James A. Nunley II, MD; MPH; Akhil Sharma; Selene G. Parekh, MD, MBA Nirav Amin; Joseph Liu

The Impact of Preoperative Mental Health and Long-Term Functional Outcomes After Total Ankle Depression on Outcomes After Total Ankle Arthroplasty Arthroplasty Daniel J. Cunningham, MD; John Steele, MD; James W. Brodsky, MD; Daniel J. Scott, MD, MBA; Samuel B. Adams, MD Samuel E. Ford, MD; Scott Coleman; Yahya Daoud, PhD

The Trans-Syndesmotic Axis in Relation to the Distal Long-Term Survival Analysis of Total Ankle Anterior Medial Tibial Cortex Arthroplasty and Patient Risk Factor for Failure Daniel R. Schlatterer, DO; James Deal; Sung-Jae Kim, MD, PhD; Hwa-Jun Kang, MD; Kurt M. Krautmann, MD Ki Chun Kim, MD

The Use of Long Acting Opioids to Prevent Rebound Long-Term Survivorship of the Salto Talaris Total Pain Following Peripheral Nerve Blocks for Outpatient Ankle Arthroplasty Foot and Ankle Surgery Jonathan Day, MS; Jaeyoung Kim, MD; Andrew R. Roney, Leah Herzog, MD; Sylvia H. Wilson; BA; Jonathan H. Garfinkel, MS; Scott J. Ellis, MD; Jonathan Christopher E. Gross, MD T. Deland, MD; Martin J. O’Malley, MD; David S. Levine, MD; Constantine A. Demetracopoulos, MD ANKLE ARTHRITIS Mid- to Long-Term Follow-up of Total Ankle Accuracy and Reproducibility of a Patient-Specific Arthroplasty Using Salto Talaris Implant Instrumentation in Total Ankle Arthroplasty Chelsea S. Mathews, MD; James S. Davitt, MD; J. Chris Pierre-Marc April, MD, FRCSC; Philippe Hugo Coetzee, MD; Daniel Norvell, PhD; William R. Ledoux, PhD; Champagne, MD, FRCSC; Magalie Angers, MD, FRCSC; Bruce J. Sangeorzan, MD Karl-Andre R. Lalonde, MD; Brad Meulenkamp, MD; Adriana P. Martinez, MD; Angela Seidel, MD Multi-Segment Foot and Ankle Gait Kinematics Following Total Ankle Arthroplasty Assessment of Intraoperative of Range of Motion After Dylan Wiese; Jessica M. Fritz; Karl Canseco; Katherine Total Ankle Replacement: Radiographic Cohort Study Konop; Carolyn M. Meinerz, MD; Brian C. Law, MD Rogerio C. Bitar; Kristin C. Caolo, BA; Guilherme H. Saito, MD; Jaeyoung Kim, MD; Jonathan T. Deland, MD; Scott J. Novel Measurement Technique for Talar Height Ellis, MD; Constantine A. Demetracopoulos, MD Assessment in Total Ankle Arthroplasty Robert Kulwin, MD; Steven L. Haddad, MD Does Prior Surgery Affect Total Ankle Complication and Failure Rates? Restoration of Talar Height, Alignment, and Implant Luigi Manzi, MD; Federico Giuseppe Usuelli, MD; Survival After Revision Total Ankle Arthroplasty with Alexander Caughman; Christopher E. Gross, MD Minimum 2-Year Follow-up Robert Kulwin, MD; Steven L. Haddad, MD

Return to Sport and Activity After Total Ankle Arthroplasty and Arthrodesis: A Systematic Review William L. Johns; Christopher Sowers; Kempland C. Walley, BSc; J. Benjamin Jackson, MD; David B. Thordarson, MD; Tyler A. Gonzalez, MD, MBA

37 AUDIO POSTERS

The Demographics of Total Ankle Replacement in the ARTHROSCOPY USA: A Study of 21,222 Cases Undergoing Preoperative CT Scan-Based Planning All-Inside Arthroscopic Cancellous Allograft for the Murray J. Penner, MD, FRCSC; Gregory C. Berlet, Large Cystic Osteochondral Defect of the Talus MD, FRCSC, FAOA; Ricardo Calvo; Eric Molina; David Shi-Ming Feng, MD Reynolds; Paul Stemniski; W. Hodges Davis, MD Appropriate Distraction Strength of The INFINITY Total Ankle Prosthesis: Outcomes at Metatarsopahlangeal Joint Arthroscopy Kwang-Bok Lee, MD, PhD; Short Term Follow-up Jongkil Kim, MD ; Gregory C. Berlet, MD, FRCSC, FAOA; Calvin J. Rushing Arthroscopic Findings in Symptomatic Fourth and Fifth Christopher F. Hyer, DPM Tarsometatarsal Joints With and Without Arthritis ; Michael D. VanPelt, DPM; Matthew J. The Radiographic Support for Distal Tibia Medial George T. Liu, DPM Johnson; Katherine M. Raspovic, DPM; Dane K. Wukich, Opening-Wedge Osteotomy with Fibular Valgization MD; Trapper Lalli, MD Osteotomy for Medial Ankle Osteoarthritis Hong-Geun Jung, MD, PhD; Jung-Won Lim, MD Arthroscopic Mobilization of the Ankle-Subtalar Joint Tibial Torsion May Predict Morphology of the Talus Complex Using a Novel “Infra-fibula-tip” Portal David J. Ciufo, MD; Erin A. Baker, PhD; Paul T. Fortin, MD Yuki Tochigi, MD, PhD; Satoru Ozeki, MD, PhD; Masato Ogawa, MD Total Ankle Arthroplasty as a Day Case Surgery: How Safe and Effective Is It? Functional and Radiographic Outcomes Following Shahin Kayum, MD, MRCS; Timothy R. Daniels, MD, Repair of Osteochondral Lesions After Ankle Fracture FRCSC; Ryan M. Khan, PA with Arthrex BioCartilage and Bone Marrow Aspirate Concentrate Compared to Microfracture Total Ankle Arthroplasty (TAR) vs. Ankle Arthrodesis Drew N. Stal, MD; Stephanie K. Eble; Oliver B. Hansen; (AA) for Primary Ankle Osteoarthritis: A Nationwide Bopha Chrea, MD; Mark C. Drakos, MD Analysis Bailey J. Ross, BA; Ian Savage-Elliott, MD; Outcomes of Posterior Arthroscopic Reduction and Victor Wu; Ramon F. Rodriguez, MD Internal Fixation (PARIF) for the Posterior Malleolar Fragment in Trimalleolar Ankle Fractures Total Ankle Arthroplasty Results Using Fixed Kevin D. Martin, DO; Jeannie Huh, MD Bearing CT-Guided Implants in Post-Traumatic Versus Non-Traumatic Arthritis Results of an Accelerated Rehabilitation Program Assaf Albagli, MD, DVM; Susan M. Ge, MD; After Arthroscopic Broström Ankle Ligament Patrick Park; Dan Cohen; E. Ruth Chaytor, MD, FRCSC; Repair Augmented with an Arthroscopically Monika Volesky, MD Applied Suture Tape James R. McWilliam, MD; Andres A. Cedeno; Two for One: Bilateral Simultaneous versus Staged Jorge I. Acevedo, MD Total Ankle Arthroplasty: Are Patient-Centered Outcomes Equivalent? BASIC SCIENCES/BIOLOGICS Amanda N. Fletcher, MD; Gregory F. Pereira, MD; Mark E. Easley, MD; James A. Nunley II, MD; James K. DeOrio, MD Ankle Joint Pressure in Supination-External Rotation Injuries: A Dynamic Biomechanic Cadaveric Study Was Mark Reiley Right? An Outcome Analysis of Fabian Krause, MD; Ivan Zderic; Angela Seidel, MD; Intramedullary versus Extramedullary Alignment Boyko Gueorguiev; Marc C. Attinger; Andreas Foesel, MD Referencing for Total Ankle Replacement Craig C. Akoh, MD; Amanda N. Fletcher, MD; Rishin J. Bio-Integration and Bone Fixation Performance of Kadakia, MD; Jie Chen, MD, MPH; Young-uk Park, MD, Continuous Mineral Fiber-Reinforced Implants PhD; Hyong Nyun Kim, MD, PhD; Juntao Wang, MD, PhD; Gregory C. Berlet, MD, FRCSC, FAOA; Mark E. Easley, MD; James A. Nunley II, MD Ronit Merchav-Feuermann; Nicolette Jackson

Influence of Cannabinoid on Interleukin-1β Treated Cartilage: An In Vitro Study Jiangyinzi Shang; Yuning Hu; Peter Alexander; MaCalus V. Hogan, MD; Hang Lin; Alan Y. Yan, MD

38 Abstracts available for viewing in the AOFAS mobile app.

Novel Pathology Classification System (FEMASK- Do PROMIS® Biopsychosocial Measures Inform Clinical Score) for Charcot Neuropathic Arthropathy Reveals Decisions in Patients with Hallux Valgus? Intraneural Vasculopathy and Predicts Outcome Marcey Keefer Hutchison, DPT; Jeff Houck, PhD Jesse King, BSc; Ben Murie; Julie C. Fanburg-Smith; Chris M. Stauch; Donald Flemming, MD; Michael J. Klein; Efficacy of Bilateral Simultaneous Hallux Valgus Elizabeth E. Frauenhoffer; Madelaine W. Fritsche, BSc; Correction in The Elderly Aged 70 to 79 Compared to Jessica Smith; John Elfar; Michael C. Aynardi, MD Middle Age Chul-Young Jang; Ho-Jin Lee, MD; Eui Hyun Park, MD; Semi-Automatic Software-Based 3D-Angular In Tak Chu, MD Measurement for Weightbearing CT (WBCT) Is 97% Faster Than Measurement by Hand and Provides Impact of Preoperative Metatarsus Adductus on Similar Angles Surgical Correction After Triplanar Tarsometatarsal Martinus Richter, MD, PhD; Stefan Zech, MD; Arthrodesis Stefan A. Meissner; Issam Naef Joshua M. Reside; Justin J. Ray, MD; Taylor L. Shackleford; Jennifer Koay; Paul Dayton, MS, DPM; Species-Specific Immunoassay for Diagnosis and Daniel J. Hatch, FACFAS; W. Bret Smith, DO, MS; Tracking Treatment Response in Foot and Ankle Robert D. Santrock, MD Infection Irvin Oh, MD; Stephanie Hao; Olivia Waldman; Amanda H. Influence of First Metatarsophalangeal Joint Holleran, MD; John L. Daiss, PhD Degenerative Changes on Functional Outcomes Following Hallux Valgus Correction The Effects of Fibular Malrotation on Tibiotalar Contact Daniel Corr; Ryan G. Rogero, BS; Andrew Fisher, BS; Area and Peak Pressure Distributions in Weber B Joseph T. O’Neil, MD; Daniel J. Fuchs, MD; Steven M. Ankle Fractures Raikin, MD Ansab M. Khwaja, MD; Alfonso E. Ayala, BS; Brianna Goodison; Jared Irwin, BS; L. Daniel Latt, MD, PhD Metatarsal Pronation: Does It Matter? Monique C. Chambers, MD; Dion Birhiray; Mina A. Botros; William M. Granberry, MD BUNION One Year Follow-Up of Patient Reported Outcomes Anatomical Risk Factors Associated with Rapid Following Third Generation Minimally Invasive Chevron Progression of Hallux Valgus Deformity Akin Osteotomies (MICA) in Hallux Valgus Surgery Shinohara Masashi; Yamaguchi Satoshi; Ono Yoshimasa Thomas L. Lewis; Robbie Ray; David Gordon

Comparison of Topical Skin Adhesive and Simple Outcome of Concomitant First Metatarsophalageal and Interrupted Nylon Sutures for Wound Closure in Tarsometatarsal Arthrodesis for Severe Hallux Valgus Forefoot Surgery: A Prospective Randomised Trial Thomas B. Bemenderfer, MD, MBA; Jacob B. Boersma; Robbie Ray; Thomas A. Goff; Paul M. Dearden; Peter W. Michael J. Pryor; John D. Maskill, MD; John G. Anderson, Robinson; Peter Lam, MBBS, FAOrthA, FRACS(Orth); MD; Donald R. Bohay, MD, FACS Andrew P. Wines, MBBS, FRACS(Orth); Thomas L. Lewis Patient Reported Outcomes and Recurrence Following Correcting the Hallux Valgus Deformity: A Comparison 127 Primary Lapidus Surgeries for Hallux Valgus Between Modified Lapidus Procedure and Scarf Sara H. Galli, MD; Nick Johnson; W. Hodges Davis, MD; Osteotomy Robert B. Anderson, MD; Carroll P. Jones III, MD; Megan Reilly, MD; Jonathan Day, MS; Aoife MacMahon, Bruce E. Cohen, MD BA; Kristin C. Caolo, BA; Bopha Chrea, MD; Nicholas Williams; Mark C. Drakos, MD; Scott J. Ellis, MD Percutaneous Chevron Akin (PECA) Correction of Hallux Valgus Deformity: Analysis of the Distal Chevron Osteotomy Increases Anatomic Learning Curve. Intermetatarsal Angle in Hallux Valgus Peter W. Robinson; Robbie Ray; Paul M. Dearden; Jeremy Y. Chan, MD; Naudereh B. Noori, MD; Stephanie Thomas A. Goff; Michael R. Whitehouse; Chen, NP; Glenn B. Pfeffer, MD; Timothy P. Charlton, MD; Peter Lam, MBBS, FAOrthA, FRACS(Orth); David B. Thordarson, MD George Dracopoulos, MD

39 AUDIO POSTERS

Radiological Outcomes of Third Generation HINDFOOT Minimally Invasive Chevron Akin Osteotomies (MICA) For Hallux Valgus 3D Imaging for Hindfoot Alignment: A Comparative Thomas L. Lewis; Robbie Ray, David Gordon Study between MRI and Weightbearing CT Anil Haldar; Alessio Bernasconi, MD; Syed E. Junaid; Results of Hallux Metatarsophalangeal Joint Matthew J. Welck, MD, FRCS(Orth); Asif Saifuddin Arthrodesis With and Without Calcaneus Autograft Fred T. Finney, MD; Philip Kaiser, MD; D. Anthony Barcel, Clinical Significance of Measurements in Adult MD; W. Hodges Davis, MD; Bruce E. Cohen, MD; J. Kent Acquired Flatfoot Deformity Using Weightbearing CT: Ellington, MD, MS; Todd A. Irwin; Carroll P. Jones III, MD A Matched Case-Control Study Francois Lintz, MD; Alessio Bernasconi, MD; Matthieu Six Month Follow-Up of Patient Reported Outcomes Lalevée; Céline Fernando; Alexej Barg, MD; Cesar de Following Third Generation Minimally Invasive Chevron Cesar Netto, MD, PhD Akin Osteotomies (MICA) in Hallux Valgus Surgery Thomas L. Lewis; Robbie Ray; David Gordon Establishing a New Bony Landmark for Safe Screw Insertion in Medial Displacement Calcaneal Osteotomy: Three-Dimensional Weightbearing CT Assessment of A Simulation-Based Approach Metatarsal Osteotomies for Hallux Valgus Correction Jaeyoung Kim, MD; Jonathan Day, MS Jarrett D. Cain, MSc, DPM; Jordan T. Stolle; Sorin Siegler, PhD Evaluating Prospective Patient-Reported Pain and Function Outcomes After Ankle and Hindfoot Understanding the Rotational Positioning of the Arthrodesis Bones in the Medial Column of the Foot: Mitesh P. Mehta, BA; Alain E. Sherman, BA; A Weightbearing CT Analysis Manish Mehta; Anish R. Kadakia, MD Thiago A. Silva; Daniel Baumfeld, MD; Shuyuan Li, MD, PhD; Nacime S. Mansur, MD; Francois Lintz, MD; Caio A. Exposure of the Calcaneus via the Sinus Tarsi Nery, MD; Alexandre L. Godoy-Santos, MD; Pablo Wagner, Approach versus the Lateral Extensile Approach: MD; Emilio Wagner, MD; Kevin N. Dibbern, PhD; John E. A Cadaveric Study Femino, MD; Cesar de Cesar Netto, MD, PhD John C. Prather, MD; John Wilson, BS; Eildar Abyar, MD; Sean Young; Gerald McGwin, PhD; Validity of the Paper Pull Test for Strength in Patients Michael D. Johnson, MD with Hallux Valgus Marcey Keefer Hutchison, DPT; Jeff Houck, PhD; Jaymee Factors Affecting the Outcomes of Kau; Kristen E. Omohundro; Alex Hughes; Kara Oshiro; Tibiotalocalcaneal Fusion Taylor Eckel, BS Charles C. Pitts, MD; Bradley Alexander, BS; Joshua L. Washington; Hannah M. Barranco; Romil K. Patel; Benjamin B. Cage; Elise M. Greco; Ashish Shah, MD DIABETES Is There a Difference in Outcomes Between Patients Complication Rates in Ankle and Hindfoot Charcot Who Received a Double or Triple Arthrodesis for Arthropathy Treated with Arthrodesis Hindfoot Arthritis? David M. Macknet, MD; Andrew Wohler, MD; Bruce E. Amanda H. Holleran, MD; Judith F. Baumhauer, MD, Cohen, MD; J. Kent Ellington, MD, MS; Carroll P. Jones III, MS, MPH; Jeff Houck, PhD; Daniel Homeier; Adolph S. MD; Todd A. Irwin; W. Hodges Davis, MD Flemister, MD; John P. Ketz, MD; Benedict F. DiGiovanni, MD; Irvin Oh, MD Group B Streptococcus Infected Tenosynovitis in Diabetic Foot Ulcers Long-Term Outcomes of Coalition Resection in Adult Olivia Waldman; Thomas Sajda; Irvin Oh, MD; Tarsal Coalition Aron Sulovari Thomas B. Bemenderfer, MD, MBA; Jacob B. Boersma; Donald R. Bohay, MD, FACS; John G. Anderson, MD; John D. Maskill, MD

Medial Displacement Calcaneal Osteotomy: Loss of Correction with Varying Drilling Techniques Benjamin D. Umbel, DO; B. Dale Sharpe, DO; Adam L. Halverson, DO; Mark A. Prissel, DPM

40 Abstracts available for viewing in the AOFAS mobile app.

Modified Ankle-Hindfoot Alignment Radiological LESSER TOES Evaluation Method and Application in the Flatfeet Zhao Hong-Mou, MD, PhD A Comparison of Microvasculature of Normal versus Torn Lesser Toe Metatarsophalangeal Joint Plantar Outcomes After Tibiocalcaneonavicular Ligament Plates Using Nano-CT Imaging Reconstruction in Stage IIB and Stage IV Adult Natalie Singer, MD; David M. Walton, MD; James R. Acquired Flatfoot Deformity Holmes, MD; Paul G. Talusan, MD Rusheel Nayak, BA; Milap Patel, DO; Anish R. Kadakia, MD Comparison Between Osteochondral Autologous Transplantation and Dorsiflexion Closing Wedge Outcomes of Flexible Flatfoot Deformity Metatarsal Osteotomy for Operative Treatment of Reconstruction in the Young Patient Late-Stage Freiberg Disease in Adult Patients Jonathan Day, MS; Matthew S. Conti, MD; Nicholas Sung-Jae Kim, MD, PhD; Gablae Kim Williams; Jaeyoung Kim, MD; Jonathan T. Deland, MD; Scott J. Ellis, MD Direct Plantar Approach to Plantar Plate Repair and Associated Wound Complications Predictors of Spring Ligament Degeneration and B. Dale Sharpe Jr., DO; M.P. Ebaugh, DO; Mark A. Outcomes of Reconstruction During Correction of Prissel, DPM; Christopher F. Hyer, DPM; Terrence M. Adult Acquired Flatfoot Deformity Philbin, DO; Gregory C. Berlet, MD, FRCSC, FAOA; Steven M. Raikin, MD; Ryan G. Rogero, BS; Jared Raikin, David A. Goss Jr., DO BS; Daniel Corr; Justin Tsai, MD Fixation of Hammertoes with a Permanent Radiographic Measurements on Hindfoot Alignment Intramedullary K-Wire: A Low-Cost Alternative for a View in 1,128 Asymptomatic Subjects Common Procedure. Jun Young Choi, MD; Jin Soo Suh, MD, PhD V. James Sammarco, MD; Josika A. Sammarco; Allegra L. Delman Radiographic Union of Evans Osteotomy Without Fixation Patient Outcomes Following Polyvinyl Alcohol Megan R. Miles, MD; Brian P. Gallagher, MD; Katherine Hydrogel Implant of the Lesser Metatarsals L. Mistretta; Nigel N. Hsu, MD; Haijun Wang; Gregory P. Bopha Chrea, MD; Jonathan Day, MS; Stephanie K. Eble; Guyton, MD Andrew J. Elliott; Martin J. O’Malley, MD; Jonathan T. Deland, MD; Mark C. Drakos, MD Redefining Hindfoot Alignment Based on Pathology Rather Than Morphology: A Prospective Observational Diagnostic Study on 250 Feet MIDFOOT/FOREFOOT Francois Lintz, MD; Alessio Bernasconi, MD; Matthew J. Welck, MD, FRCS(Orth); Céline Fernando; Cesar de Cesar Allograft Interposition Bone Graft for First Metatarsal Netto, MD, PhD Phalangeal Arthrodesis: Salvage After Bone Loss and Shortening of the First Ray The Effect of a Leveling Procedure for Addressing John Burke, MD; Glenn G. Shi, MD; Benjamin Wilke, MD; Bony Step-Off Following Medial Displacement Joseph L. Whalen, MD, PhD Calcaneal Osteotomy Jaeyoung Kim, MD; Chulho Kim; Jonathan Day, MS Complications Rates and Outcomes Following First Metatarsophalangeal Arthrodesis for Hallux Rigidus: The Effect of Lower Extremity Internal and External Does Age Matter? Rotation on the Hindfoot Alignment Moment Arm and Matthew Lunati; Wesley J. Manz; Samuel D. Maidman, Hindfoot Alignment Angle BA; Danielle Mignemi, ATC; Jason T. Bariteau, MD Kamil Okroj; Ryan G. Rogero, BS; Daniel Corr; Daniel J. Fuchs, MD; Brian S. Winters, MD; Joseph T. O’Neil, MD; Early Failures of Polyvinyl Alcohol Hydrogel Implant for Rachel J. Shakked, MD; Steven M. Raikin, MD the Treatment of Hallux Rigidus Yoshiharu Shimozono, MD; Eoghan T. Hurley, MBBCh, The Impact of Age and Graft Type on Foot and Ankle BAO; John G. Kennedy, MD, FRCS(Orth) Arthrodesis Fusion Success Gregory C. Berlet, MD, FRCSC, FAOA; Judith F. Early Weightbearing After Operative Fixation of Jones Baumhauer, MD, MS, MPH; Mark A. Glazebrook, MD, MSc, Fractures Does Not Delay Union PhD; Alastair S. Younger, MBChB, ChM, FRCSC; David Austin Looney; Daniel M. Dean, MD; John Renehan; Fitch; Jovelyn Quiton; Timothy R. Daniels, MD, FRCSC; Thomas H. Sanders, MD; Daniel J. Cuttica, DO; Christopher W. DiGiovanni, MD Steven K. Neufeld, MD

41 AUDIO POSTERS

Extensor Tendon Transfers for Treatment of Foot Radiographic Analysis and Patient Reported Outcomes Drop in Charcot-Marie-Tooth Disease: (PROMIS) in Zone 2 and 3 Fifth Metatarsal Fracture A Biomechanical Evaluation Surgery Max Michalski, MD; Tonya W. An, MD; Melodie F. Rusheel Nayak, BA; Joshua E. Barrett, BA; Mauricio P. Metzger, PhD; Trevor Nelson, BS; Glenn B. Pfeffer, MD Barbosa, MD; Milap Patel, DO; Anish R. Kadakia, MD

Functional Outcomes of Open Reduction and Internal The Role of Weightbearing Computed Tomography Fixation Treatment of Lisfranc Injuries Scan in Hallux Valgus Daniel Corr; Trevor McBride; Ryan G. Rogero, BS; Steven Sreenivasulu Metikala, MD; Karim Mahmoud Khamis, M. Raikin, MD; Rachel J. Shakked, MD MBBCh; George W. Fryhofer; Samir Mehta; Daniel C. Farber, MD Independent Radiographic Review of Joint Space Following First Metatarsophalangeal Synthetic Using Area and Volume Measurements on Cartilage Implantation: Is There an Association Weightbearing CT to Detect Isolated Lisfranc Instability Between Joint Space and Outcomes? Rohan Bhimani, MD, MBA; Pongpanot Sornsakrin; Soheil Timothy R. Daniels, MD, FRCSC; Mark A. Glazebrook, Ashkani-Esfahani; Bart Lubberts, MD, PhD; Gregory R. MD, MSc, PhD; Judith F. Baumhauer, MD, MPH; Waryasz, MD; Daniel Guss, MD, MBA; Christopher W. Christopher W. DiGiovanni, MD; Keith L. Wapner, MD; DiGiovanni, MD David Fitch; Alastair S. Younger, MBChB, ChM, FRCSC

Lateral Column Lengthening versus Medial OTHER Displacement Calcaneal Osteotomy in Stage II Tibialis Posterior Tendon Dysfunction: Randomized Changes in Radiographic Angles of the Foot and Ankle Controlled Trial as a Function of Weightbearing Load: A Cadaver Study Amr A. Mohammed; Hossam Abubeih; Ahmed Osman; Tadashi Kimura, MD, PhD; Eric Thorhauer; Matthew W. Wael Eladly; Ahmed Khalifa; Kamal Gafary Kindig, MSc; Bruce J. Sangeorzan, MD; William R. Ledoux, PhD Medial Displacement Calcaneal Osteotomy as a Novel Treatment for Recurrent Pain After Kidner Procedure Comparative Outcomes and Complications of Open for Accessory Navicular Syndrome versus Endoscopic Gastrocnemius Recession: A Jaeyoung Kim, MD; Jonathan Day, MS Prospective Randomized Control Trial Chamnanni Rungprai, MD; Yantarat Sripanich, MD; Outcomes After Minimally Invasive Chevron/Akin Warongporn Pongpinyopap, MD Procedure and Strategies to Optimize Outcomes Syed H. Hussaini, MD; Steven K. Neufeld, MD; Stephen Comparison of Patient-Reported Outcomes (PROs) for D. Lockey; Daniel M. Dean, MD Major Pathologies of the Forefoot, Midfoot, Hindfoot, and Achilles Using PROMIS Postoperative Outcomes and Complications in Hallux Daniel A. Hu; Rusheel Nayak, BA; Elijah O. Ogunkoya; Rigidus: A Comparison Between Polyvinyl Alcohol Milap Patel, DO; Anish R. Kadakia, MD Implant and Cheilectomy with Moberg Osteotomy Bopha Chrea, MD; Jonathan Day, MS; Stephanie K. Eble; Do Geographic Region, Pathologic Chronicity, and Megan Reilly, MD; Jonathan T. Deland, MD; Scott J. Ellis, Hospital Affiliation Affect Access to Care Among MD; Martin J. O’Malley, MD; Mark C. Drakos, MD Medicaid- and Privately-Insured Foot and Ankle Surgery Patients? Preoperative Radiographic Parameters of Arch Charles C. Pitts, MD; Haley M. McKissack; Jun Kit He; Collapse Do Not Predict Future Treatment Failure in Bradley Alexander, BS; Charles R. Sutherland; Benjamin B. Patients with Stage IIb Pes Planus Cage; Ashish Shah, MD Kempland C. Walley, BSc; Chris M. Stauch; Jeremy Silver; Patrick Wise, BSc; Thomas Harper; Christopher Ehret; Jesse King, BSc; Mark Dunleavy; Paul J. Juliano, MD; Michael C. Aynardi, MD

42 Abstracts available for viewing in the AOFAS mobile app.

Do Preoperative Transcutaneous Oxygen Perfusion Preoperative and Postoperative PROMIS and Measurements Predict Atraumatic Major Lower FFI Scores Based on Region of Foot Pathology Extremity Amputation Wound Healing? and Surgery Naudereh B. Noori, MD; Lee Haruno; Ian Schroeder; Charles C. Pitts, MD; Bradley Alexander, BS; Elise M. Mark Vrahas; Milton T. Little; Carol Lin Greco; Benjamin B. Cage; Spaulding F. Solar; Tanvee Sinha; Ashish Shah, MD Hypoalbuminemia Is an Independent Predictor of 30- Day Postoperative Complications Following Surgical Prospective Evaluation of Opioid Consumption in Fixation of Ankle Fractures Multimodal Analgesia Following Isolated Hallux Valgus Nathan Kukowski; Jacob M. Wilson, MD; Jason T. Correction or First MTP Joint Arthrodesis Bariteau, MD; Christopher A. Staley, BS Wonyong Lee, MD; Dan Prat, MD; Daniel C. Farber, MD; Keith L. Wapner, MD; Wen Chao, MD Impact of Postoperative Complications on Fulfillment of Expectations After Orthopaedic Foot Randomized Trial of Dilute Betadine Soak and Scrub and Ankle Surgery for Orthopaedic Foot and Ankle Surgery Bopha Chrea, MD; Jensen K. Henry, MD; Jonathan Day, Daniel D. Bohl, MD, MPH; Nasima Mehraban; MS; Andrew R. Roney, BA; Elizabeth Cody, MD; Scott J. David Rossi; Connor Wakefield, BS; Johnny L. Lin, MD; Ellis, MD Simon Lee, MD; Kamran S. Hamid, MD, MPH

Incidence and Risk Factors of Preoperative and Regional Nerve Block Complication Analysis Postoperative Falls for Patients with Chronic Foot Following Peripheral Nerve Block During Foot and Pathologies: An Institutional Prospective Study Ankle Surgical Procedures Bradley Alexander, BS; Nicholas Andrews, BS; Jason A. Lauf; Pearson N. Huggins; Mohammed Al-Issa; Benjamin B. Cage; Elise M. Greco; Charles R. Sutherland; Brian M. Byrne, DO; Bryan Large, DO; Joseph M. Long, Jared R. Halstrom, BS; Spaulding F. Solar; Tanvee Sinha; BS; Brent Whitehead; Nicholas A. Cheney, DO; Timothy Ashish Shah, MD Law, DO, MBA

Leg-Length-Evening Device Improves Balance in Surgical Management of Insertional Achilles Patients Wearing a Controlled Ankle Motion Boot: A Tendinopathy in the Young and Elderly Result in Multicenter Randomized Controlled Trial Similar Clinical Outcomes Daniel D. Bohl, MD, MPH; Nasima Mehraban; Alexander Huai M. Phen; Wesley J. Manz; Joel T. Greenshields; J. Idarraga; Kevin J. Wu, BS; Milap Patel, DO; Anand M. Danielle Mignemi, ATC; Jason T. Bariteau, MD Vora, MD; Anish R. Kadakia, MD; Simon Lee, MD; Kamran S. Hamid, MD, MPH The Rise of Predatory Journals in Foot and Ankle Surgery: Propitious or Detrimental? Patient Perceptions of Patient Reported Outcome Adeshina Adeyemo; Umur Aydogan, MD Measures in Orthopedic Surgery (PROMOS): A Snapshot of Data for Foot and Ankle Patients The Role of Cavovarus Deformity in the Pathogenesis Kempland C. Walley, BSc; Emily Vannatta, BS; Chris M. of Peroneal Tendon Tears Stauch; Madelaine W. Fritsche, BSc; Mark Dunleavy; Shannon F. Alejandro, MD; Akira Taniguchi, MD; Justin Paul J. Juliano, MD; Michael C. Aynardi, MD M. Kane, MD; Samuel E. Ford, MD; Daniel J. Scott, MD, MBA; Yasuhito Tanaka, MD; James W. Brodsky, MD Postoperative Length of Stay May Predict Foot and Ankle Patients at Risk for Readmission Trends in Industry Payments to Orthopedic Foot and Erin A. Baker, PhD; Corinn Gehrke, MS; David J. Ciufo, Ankle Surgeons from 2014 to 2018 MD; Zachary M. Vaupel, MD; Paul T. Fortin, MD Kush S. Mody; Lathan Liou; Tej Joshi; Christopher Mikhail; Joseph Barbera; Stephen Selverian; Ettore Vulcano, MD Postoperative Opioid Dependence Following Orthopaedic Foot and Ankle Surgery: A Cohort Study of 448 Patients Daniel D. Bohl, MD, MPH; Emily Hejna; Nasima Mehraban; Johnny L. Lin, MD; George B. Holmes, MD; Simon Lee, MD; Kamran S. Hamid, MD, MPH

43 AUDIO POSTERS

Vitamin D Management and Nonunion in Elective Foot Influence of Foot Orthotics and Intrinsic Factors on and Ankle Arthrodesis Strain Measurements in the Fifth Metatarsal Benjamin J. Ebben, MD; Andrew E. Brooks, MD; Natalie Jeffrey W. Hoffman; Rogerio C. Bitar; Daniel R. Sturnick, M. Gaio; Kathryn L. Williams, MD MS; Glenn Garrison; Constantine A. Demetracopoulos, MD; Mark C. Drakos, MD; Martin J. O’Malley, MD What Is the Responsiveness and Quality of Life “Utility” for PROMIS Outcomes in Foot and Ankle Pain Scores and Return to Activities/Sport Following Patients Following Physical Therapy? Dehydrated Micronized Allogenic Cartilage and Christopher G. Neville, PhD, PT; Judith F. Baumhauer, Isolated Microfracture for Treatment of Talar MD, MS, MPH; Jeff Houck, PhD Osteochondral Lesions Brian Lau, MD; Brianna Johnson; David E. Oji, MD; Loretta B. Chou, MD SPORTS Return to Play and Performance After Achilles A Comparison of Clinical Outcomes and Complication Tendon Rupture in Women’s National Basketball Rates in Open Versus Minimally Invasive Achilles Association Players Tendon Repair Using PROMIS Scores Vincent Federico; Samy Gabriel; Christopher W. Reb, DO Kristin C. Caolo, BA; Stephanie K. Eble; Andrew J. Elliott; Constantine A. Demetracopoulos, MD; Jonathan T. Using Portable Ultrasound to Measure the Effect Deland, MD; Mark C. Drakos, MD; Scott J. Ellis, MD of Lateral Ankle Ligament Injury on Syndesmotic Stability: A Cadaveric Study Automatic 3D Volumetric Analysis of the Distal Jirawat Saengsin; Noortje Hagemeijer, MD; Rohan Tibiofibular Syndesmotic Incisura: A Case-Control Bhimani, MD, MBA; Go Sato; Bart Lubberts, MD, PhD; Study of Subtle Chronic Syndesmotic Instability Gregory R. Waryasz, MD; Daniel Guss, MD, MBA; Cesar de Cesar Netto, MD, PhD; Francois Lintz, MD; Christopher W. DiGiovanni, MD Jessica E. Goetz, PhD; Kevin N. Dibbern, PhD; Ivan C. Giarola; Alexandre L. Godoy-Santos, MD; Daniel Guss, MD, MBA; John E. Femino, MD; Donald D. Anderson, PhD; TRAUMA Christopher W. DiGiovanni, MD An In Vivo Biomechanical Analysis of Syndesmotic Biomechanical Evaluation of Suture Button Spread Surgical Repair in Elite Athletes: Screw versus Suture With and Without Deltoid Repair in Combined Button Fixation Syndesmosis and Deltoid Injury Stephen P. Canton; Tom Gale, PhD; Dukens LaBaze, BS; Brian Lau, MD; Hunter Storaci; Kaysie Tam; Cara Lai; William Anderst, PhD; MaCalus V. Hogan, MD Brett P. Salazar; Roberto Guzman; David E. Oji, MD; Loretta B. Chou, MD Asymmetric Lambda Sign on Axial Weightbearing CT Scans of the Foot: An Indicator to Aid in the Diagnosis Comparison of Clinical Outcomes After Arthroscopic of Subtle Lisfranc Instability? Anterior Talofibular Ligament Repair With or Without Yantarat Sripanich, MD; Jesse Steadman, BS; Nicola Inferior Extensor Retinaculum Augmentation Krahenbuhl, MD; Chamnanni Rungprai, MD; Charles L. Sung Hyun Lee, MD Saltzman, MD; Alexej Barg, MD

Dynamic Imaging Evaluation in Turf Toe Injuries: A Complications Associated with Lisfranc Injury Prospective Protocol in 18 Patients Open Reduction Internal Fixation versus Primary Jorge Filippi, MD, MBA; Gonzalo F. Bastias, MBBS, Arthrodesis: A Matched Cohort Study FRCS; Freddy Escobar, MD; Claudia Astudillo; Sara R. William V. Probasco, MD, MS; Benjamin E. Stein, MD; Munoz; Edith Miranda; Ignacio A. Valderrama; Manuel J. Cyrus Fassihi, MD; Nazia Hossain Pellegrini, MD; Natalio R. Cuchacovich Mikenberg, MD Fractures of the Talar Head: A Series of 16 Patients Increased Strength Following Achilles Tendon Rupture Ishaq Ibrahim; John Y. Kwon, MD; Christopher P. Miller, Repair Is Associated with Return to Same Level of Play MD, MHS; Jeremy T. Smith, MD in Patients with Higher Pre-Injury Level of Activity Russell E. Holzgrefe, MD; Timothy McCarthy, MD; Jacob M. Wilson, MD; Jason T. Bariteau, MD; Sameh A. Labib, MD

44 Abstracts available for viewing in the AOFAS mobile app.

Fractures of the Tibial Plafond: Does the The Role of Deep Deltoid Ligament in Ankle Fracture Presence or Absence of a Fibular Fracture Stability: A Biomechanical Cadaveric Study Predict Future Morbidity? Daniel McCormack; Sayyied J. Kirmani; Sheweidin Aziz; Henry Boateng, MD, MSc; Kempland C. Walley, BSc; Radwane Faroug; Jitendra Mangwani, MBBS, MS(Orth), Chinenye Nwachuku, MD; Vince Lands; Justin W. Walker; FRCS(Tr&Orth) Muhammad Z. Mirza; Rhett MacNeille, MD; Paul Tornetta, MD; Spence Reid, MD Transcuneiform Screw Fixation in Ligamentous Lisfranc Injuries Impact of Early Weight Bearing on Outcomes after Philip J. Shaheen, MD; Benjamin Crawford; Nathan J. Open Reduction and Internal Fixation of Trimalleolar Kopydlowski; Shwetang Patel; John G. Bledsoe; Scott G. Ankle Fractures Kaar; David E. Karges, DO Devon Myers; Benjamin D. Umbel, DO; Shane Forsting; Benjamin C. Taylor, MD; Sergio H. Pulido True Antiglide Fixation of Weber B Ankle Fractures Has Lower Rates of Removal of Hardware Improving the Management of Adult Patients with Graham J. DeKeyser, MD; Patrick Kellam; Thomas F. Acute Ankle Fractures in Malawi: An Examination of Higgins; David Rothberg; Justin Haller; Lucas S. Marchand Providers’ Knowledge and Treatment Strategies Kiran J. Agarwal-Harding, MD; Ami Kapadia; Leonard Use of Intramedullary Locking Nail for Displaced Banza, MD; Mabvuto Chawinga; Nyengo Mkandawire; Intraarticular Fractures of the Calcaneus: John Y. Kwon, MD What Is the Evidence? Alessio Bernasconi, MD; Paolino Iorio; Yaser Ghani; Is Immediate Weight Bearing Safe for Lateral Malleolus Miltiadis Argyropoulos; Shelain Patel, FRCS; Fracture After Surgery? Matthew J. Welck, MD, FRCS(Orth) Young Rak Choi; Sang-June Lee; Jaehyung Lee; Seung-Hwan Park

Mapping of Posterior Talar Dome Access Through Standard Posteromedial and Posterolateral Approaches With or Without an External Fixator Distraction: A Match-Paired Cadaveric Study Graham J. DeKeyser, MD; Yantarat Sripanich, MD; Jesse Steadman, BS; Chamnanni Rungprai, MD; Justin Haller; Charles L. Saltzman, MD; Alexej Barg, MD

Predicting Syndesmotic Injury in Weber B Ankle Fractures Patrick Kellam; Graham J. DeKeyser, MD; David Rothberg; Thomas F. Higgins; Justin Haller; Lucas S. Marchand

Predictors of Functional Outcomes Following Operative Treatment of Acute Achilles Tendon Ruptures Ryan G. Rogero, BS; Andrew Fisher, BS; Daniel Corr; Joseph T. O’Neil, MD; Daniel J. Fuchs, MD; Steven M. Raikin, MD

The Lateral Drawer Test: A Novel Clinical Test to Assess Mortise Instability in Weber B Fibula Fractures John Z. Zhao, MD; Caroline Williams, MS; Kimberly K. Broughton, MD; Christopher P. Miller, MD, MHS; John Y. Kwon, MD

45 ePOSTERS

View ePosters through the AOFAS at Home platform through March 31, 2021. No CME awarded.

ANKLE Biologic Augmentation of Tibiotalocalcaneal Arthrodesis with Autologous Bone Block Is Associated 2.4mm Non-Cannulated Screws Are Non-Inferior to with High Rates of Fusion 4.0mm Cannulated Screws for Medial Malleolar Fixation Alain E. Sherman, BA; Mitesh P. Mehta, BA; Rusheel in Unstable Ankle Fractures Nayak, BA; Anish R. Kadakia, MD Brianna R. Fram, MD; Joseph L. Schmitz; Ryan G. Rogero, BS; Gerard Chang; James Krieg, MD BMI and Comorbidities in Patients with Syndesmosis Screw Breakage A Multicenter Retrospective Study Examining Josh W. Vander Maten; Jiayong Liu, MD; Logan Roebke Complication Rates Following Syndesmotic Screw Removal Clinical Outcomes of 3D Printed Titanium Cage Seth C. Shoap, BA, BS; Christina Freibott, BA; Sebastian F. Implantation for Foot and Ankle Surgery Baumbach, MD; Viktoria Herterich, MD; Hans Polzer, MD; Bijan Abar; Nicholas B. Allen; Ken Gall; J. Turner Vosseller, MD Samuel B. Adams, MD

A Retrospective Analysis of Results and Outcomes Clinical Outcomes of Anatomical Reconstruction of the After Cadence Total Ankle Arthroplasty Implanted Lateral Ankle Ligament Complex: A Systematic Review Through the End of 2017 Conor Mulvin; James P. Toale; Yoshiharu Shimozono, MD; Brianna R. Fram, MD; Ryan G. Rogero, BS; Daniel Corr; Eoghan T. Hurley, MBBCh, BAO; John G. Kennedy, MD, David I. Pedowitz, MD, MS; Justin Tsai, MD FRCS(Orth)

A Retrospective Chart Review to Determine Lateral Comparison Matrix-Associated Stem Cell Ankle Instability Treatment Based Off of the Degree of Transplantation (MAST) with Autologous Matrix Varus Tilt Induced Chondrogenesis Plus Peripheral Blood Greggory Brandle; Kaitlyn Rizzo; Nicholas A. Cheney, DO; Concentrate (AMIC+PBC) in Chondral Lesions at the Brian C. Clark Ankle - Matched-Patient Analysis Martinus Richter, MD, PhD; Stefan Zech, MD; A Retrospective Chart Review to Examine Failed Stefan A. Meissner; Issam Naef Modified Brostrom Procedures for Chronic Lateral Ankle Instability Comparison of Syndesmotic Malreduction Rate Kaitlyn Rizzo; Greggory Brandle; Nicholas A. Cheney, DO; Following Trans-Syndesmotic Screw Fixation in Brian C. Clark SER versus PER Type Ankle Fracture: A Prospective Analytic Study A Systematic Review of Fresh Osteochondral Allograft Chamnanni Rungprai, MD; Yantarat Sripanich, MD Transplantation for Osteochondral Lesions of the Talus Gregory F. Pereira, MD; John Steele, MD; Cross-Cultural Adaptation and Validation of an Arabic Amanda N. Fletcher, MD; Samuel B. Adams, MD; Version of the American Orthopedics Foot and Ankle Ryan B. Clement, PA-C Score (AOFAS) Meshal A. Alhadhoud, MBChB; Najla F. Alsiri; Maryam M. Analysis of 28 Broken Syndesmosis Screws Alsaffar; Mark A. Glazebrook, MD, MSc, PhD Josh W. Vander Maten; Logan Roebke; Jiayong Liu, MD Development of an Anatomic Landmark-Based Are Locked Plates Necessary to Maintain Reduction in Measurement of the Achilles Tendon the Treatment of Geriatric Ankle Fractures? Daniel Urness, BS; Austin R. Thompson, BS; Erik Ensrud; Aseel G. Dib, BS; Caitlin Curtis Crocker, BS; John C. James E. Meeker, MD Prather, MD; Michael D. Johnson, MD Diagnosing Syndesmosis Instability: Dynamic Autologous Osteochondral Transplantation for Ultrasound versus Arthroscopy: A Cadaveric Study Osteochondral Lesions of the Talus: Does Gender Noortje Hagemeijer, MD; Go Sato; Rohan Bhimani, MD, Impact Outcomes? MBA; Bart Lubberts, MD, PhD; Mohamed Abdelaziz Arianna L. Gianakos, DO; Olasunmbo Okedele; Elghazy, MD, MSc; Gino Kerkhoffs, MD; Daniel Guss, MD, Sean Flynn; John G. Kennedy, MD, FRCS(Orth); MBA; Christopher W. DiGiovanni, MD Christopher W. DiGiovanni, MD

46 Abstracts available for viewing in the AOFAS mobile app.

Early Functional and Patient Reported Outcomes Management of Ankle Fractures with Syndesmotic Following Suture Tape Augmented Brostrom Disruption: A Survey of Orthopaedic Surgeons Kevin D. Martin, DO; Jeannie Huh, MD; William Robinson Ryan G. Rogero, BS; Emmanuel M. Illical, MD; Daniel Corr; Steven M. Raikin, MD; James Krieg, MD; Justin Tsai, MD Early Outcomes of an Anterior Ankle Fusion Plating System with rhPDGF-BB Beta Tricalcium Morphologic Characteristics of the Medial Malleolar Phosphate Graft Fragment Based on CT Scan in Ankle Fractures Donald J. Covell, MD; Ryan McMillen Jun-Beom Kim, MD; Chung-Han An

Epidemiology of Lateral Ankle Ligament Injury: Trends Morphological Data from 70 Consecutively Treated in Clinical Management and Likelihood of Progression OCLTs by a Single Surgeon: Lesion Location to Surgical Intervention Predicts OCLT Morphology, and Morphology Christina Hermanns; Reed Coda; William G. Messamore; Predicts the Surgery Matthew Vopat, MD; Brandon L. Morris, MD; Sana Kenneth Heida, MD; John C. Dunn; Justin D. Orr, MD Cheema; Armin Tarakemeh, BA; Paul Schroeppel, MD; Scott Mullen, MD; Bryan G. Vopat, MD No Progression of Radiological Adjacent Joint Arthritis Noted in Patients with Type II DM Undergoing Total Functional Outcome of Anterior Talofibular Ligament Ankle Replacement: A 5 Year Follow Up Study Repair Using Bioabsorbable Suture Anchors Zuhaib Shahid; Nicholas Hutt; Jack Allport, MBChB; Waleed Cassis, BA; Michael S. Nemec; Kiya S. Safavi, BS; Jayasree Ramas Ramaskandhan, MPT, MSc; Ramsay Daniel Jupiter, PhD; Vinod K. Panchbhavi, MD Refiae; Malik S. Siddique, FRCS (T&O)

Fusion Rates of Ankle Arthrodesis with Anterior Plate Nottingham Experience with the Fixed Bearing Infinity Fixation Based on Computerized Tomography and Total Ankle Replacement Clinical Outcomes Hatem Salem-Saqer; Martin Raglan, MD; Sunil Dhar, Philip Kaiser, MD; W. Hodges Davis, MD; J. Kent Ellington, MBBS, MS, MCh MD, MS; Bruce E. Cohen, MD; Todd A. Irwin; Carroll P. Jones III, MD Outcome Following Lower Extremity Nerve Block During Foot and Ankle Surgery: A Systematic Review Household Items-Based Personalized Video Arianna L. Gianakos, DO; Filippo Romanelli, DO; Malaka Rehabilitation Amidst the COVID-19 Pandemic: Badri; Naina Rao; Bart Lubberts, MD, PhD; Daniel Guss, Handouts We All Wish We Had MD, MBA; Christopher W. DiGiovanni, MD Irfan Khan; Kevin D. Martin, DO; Carmen E. Quatman; Adam T. Groth, MD; Rudy Rodriguez Outcomes and Complications Following Treatment of Chronic Subtle Syndemotic Injury with Arthroscopic Impact of COVID-19 Pandemic on Patients Perceptions Debridement and Fixation with Suture Button of Safety and Need for Elective Foot and Ankle Surgery Chamnanni Rungprai, MD; Yantarat Sripanich, MD in the United States Jimmy Chan, MD; Kevin K. Chen, MD; Peter Choi; Edward Outcomes Following Arthroscopy for Anterior Rojas; Oliver N. Schipper, MD; Amiethab A. Aiyer, MD; Impingement in the Ankle Joint: Need for Gender as a Cesar de Cesar Netto, MD, PhD; Amgad M. Haleem Amin, Variable in Analysis MD, PhD; Anish R. Kadakia, MD; Ettore Vulcano, MD Arianna L. Gianakos, DO; Axel Ivander; Christopher W. DiGiovanni, MD; John G. Kennedy, MD, FRCS(Orth) Incidence of Chondral and Osteochondral Lesions in Ankle Fracture Patients Identified with Ankle Outcomes Following Microfracture for Osteochondral Arthroscopy Following Rotational Ankle Fracture Lesions of the Talus in Female Patients Emilie Williamson; Yoshiharu Shimozono, MD; John Emilie Williamson; Arianna L. Gianakos, DO; Eoghan T. Dankert; James P. Toale; Eoghan T. Hurley, MBBCh, BAO; Hurley, MBBCh, BAO; John G. Kennedy, MD, FRCS(Orth) Kenneth Egol; John G. Kennedy, MD, FRCS(Orth) Patient Characteristics and Comorbidities in Patients Kinematics After Syndesmotic Injury: Assessing Attending Specialist Foot and Ankle Outpatient Clinics the Magnitude of Talus and Fibula Rotation and in the UK: A Report of 2000 Patients Displacement Linzy Houchen-Wolloff; Clare Tomlinson; Alice E. White; Jonathan Bartolomei; Mark W. Bowers, MD; Sara Venturini; Alistair J. Best; Patricia Allen, MBChB; Kenneth J. Hunt, MD Jitendra Mangwani, MBBS, MS(Orth), FRCS(Tr&Orth)

47 ePOSTERS

Patients with Opioid Use Disorder Have Increased Syndesmosis Screw Breakage: An Analysis of Current Readmission Rates, Emergency Room Visits, and Literature Costs Following Hallux Valgus Procedures Josh W. Vander Maten; Logan Roebke; Jiayong Liu, MD James M. Parrish; Dillon Benson; Aaron K. Hoyt, BS; Jonathan R. Kaplan, MD; Amiethab A. Aiyer, MD Talar-Tarsal Stabilization: Rationale and Preliminary Outcomes Percutaneous and Minimally Invasive Surgical Ansab M. Khwaja, MD; Peter Stevens, MD; Alex Lancaster Technique for Achilles Tendon Repair Tyler Hoskins; David Goyette; Jay Patel, DO; Christopher The ACL of the Ankle Joint: A Cadaveric Evaluation of Mazzei; Arianna L. Gianakos, DO; Justin Koss; James the Subtalar Intrinsic Ligaments and Optimal Surgical Wittig; David M. Epstein, MD Approach Naven Duggal, MD; Patrick M. Williamson, BS; Posterolateral Plate Fixation with Pantalarlock® Is Ara Nazarian, PhD More Stable Than Nail Fixation in Tibiotalocalcaneal Arthrodesis in a Biomechanical Cadaver Study The Influence of Opioid Use Disorder on Open Natalia Gutteck, MD Reduction and Internal Fixation Following Ankle Fracture Quality and Readability of Online Information on Ankle Megan K. Allen, MPH; James M. Parrish; Jonathan R. Instability Kaplan, MD; Ettore Vulcano, MD; Amiethab A. Aiyer, MD Madeleine Willegger, MD; Gilbert M. Schwarz; Marcus Lisy The Safety of Foot and Ankle Surgical Procedures at an Quantitative Analysis of Talar Dome Morphology Ambulatory Surgery Center Justine Borchard; Wilshaw Stevens; Matthew Siebert; Wesley D. Peters, BS; Peter J. Adamson, MD; Cory Claire Shivers; Anthony Riccio; Kirsten Tulchin-Francis, Janney, MD; Vinod K. Panchbhavi, MD PhD; Jacob R. Zide, MD Trends in Foot and Ankle Publications Quantitative Analysis of the Deltoid Ligament Brian T. Sleasman, MD; Alexander Caughman; Christopher Degradation in Chronic Ankle Instability Patients Using E. Gross, MD the CT Value Yasunari Ikuta; Tomoyuki Nakasa, MD; Junichi Sumii; Union of Foot/Ankle Arthrodesis: A Registry Study of Akinori Nekomoto; Nobuo Adachi, MD Low-Intensity Pulsed Ultrasound (LIPUS) Neil J. White; Johnny T. Lau, MD, MSc; Kevin Ong; Review of Variability in Rehabilitation Protocols After Steven M. Kurtz; Sheldon S. Lin, MD Lateral Ankle Ligament Surgery Christina Hermanns; Reed Coda; Sana Cheema; Matthew Union Rates and Deformity Correction Using the Vopat, MD; Megan Bechtold; Armin Tarakemeh, BA; Scott Hintermann Osteotomy in Type IIb Flatfoot Deformity Mullen, MD; Paul Schroeppel, MD; Bryan G. Vopat, MD Brian P. Gallagher, MD; Walter C. Hembree, MD; Lew C. Schon, MD Routine Fixation of Weber B Fibula Fractures with a Lateral Locking Plate and No Lag Screw Daniel D. Bohl, MD, MPH; Nasima Mehraban; Ian Foran, ANKLE ARTHRITIS MD; Kamran S. Hamid, MD, MPH Analysis of 408 Total Ankle Arthroplasty Adverse Safety and Outcomes of Early Fixation in Patients Who Events Reported to the US Food and Drug Suffered an Ankle Fracture Administration from 2015-2018 Ashish Shah, MD; Jacob Hawkins; Bradley Alexander, Jie Chen, MD, MPH; Craig C. Akoh, MD; Rishin J. BS; Abhinav Agarwal, MBBS; Benjamin B. Cage; Elise M. Kadakia, MD; Jeremy S. Somerson; Mark E. Easley, MD; Greco; Hannah M. Barranco; Akshar Patel, BS Samuel B. Adams, MD; James K. DeOrio, MD; James A. Nunley II, MD Salvage Arthrodesis with Femoral Head Allograft for Failed Total Ankle Arthroplasty Arthroscopic Tibiotalar Arthrodesis versus Hong S. Lee, MD; Kiwon Young, MD; Tae-Hoon Park; Open Arthrodesis with Anterior Locking Plate: A Hong Seop Lee Retrospective Case Series Benjamin Y. Jong, MD; John E. Femino, MD; Screw Fixation of the Posterior Malleolus Fragment in Cesar de Cesar Netto, MD, PhD; Phinit Phisitkul, MD Ankle Fracture Gi-Soo Lee, MD; Jaehwang Song, MD

48 Abstracts available for viewing in the AOFAS mobile app.

Brazilian Experience with Zennith – Corin System Total Risk Factors for Early Failure of 4th Generation Total Ankle Replacement Ankle Arthroplasty Prostheses André V. Lemos, MD; Tiago S. Baumfeld, MD; Calvin J. Rushing; Christopher F. Hyer, DPM; Gregory C. Alexandre L. Godoy-Santos, MD; Daniel Baumfeld, MD; Berlet, MD, FRCSC, FAOA Caio A. Nery, MD Severe Ankle Varus Malalignment Management with a Brazilian Total Ankle Replacement Experience Fix-Bearing Total Ankle Replacement Implant André V. Lemos, MD; César E. Martins, MD; Caio A. Nery, Claudia A. Di Silvestri, MD; Riccardo D’Ambrosi, MD; MD; Daniel Baumfeld, MD Camilla Maccario, MD; Cristian Indino, MD; Federico Giuseppe Usuelli, MD Clinical Analysis on the Treatment of Kaschin-Beck Disease of the End-Stage Ankle by Tibiotalocalcaneal Short-Term Effect of the INBONE II Total Ankle Arthrodesis Using Lateral Approach with Platelet-Rich Arthroplasty in the Treatment of End-Stage Plasma Ankle Arthritis Li Yi, MD; Liang Xiaojun, MD; Zhao Hong-Mou, MD, PhD Liang Xiaojun, MD; Zhao Hong-Mou, MD, PhD

Early Outcomes with the CADENCE Total Ankle SMOT with Medial Distraction Arthroplasty for Ankle Prosthesis Arthritis with Increased Talar Tilt: A Comparative Study Calvin J. Rushing; Christopher F. Hyer, DPM Zhao Hong-Mou, MD, PhD

Early Weight Bearing and CT-Demonstrated Fusion The Epidemiology and Trends of Primary Total Ankle Following Primary Tibiotalar Arthrodesis Using an Arthroplasty and Revision Procedure in South Korea Anatomically Contoured Anterior Ankle Fusion Between 2007 and 2017 Plating System Sung-Jae Kim, MD, PhD Nicholas Kusnezov, MD; Kenneth Heida, MD; John C. Dunn; Justin D. Orr, MD The Use of Single-Photon-Emission Computed Tomography (SPECT) for the Evaluation of Painful Effect of Travel Time and Distance on Outcomes in Ankle Arthroplasties Total Ankle Arthroplasty Ramsay Refaie, FRCS (T&O), PhD; Zuhaib Shahid; Kristin C. Caolo, BA; Scott J. Ellis, MD; Jonathan T. Jayasree Ramas Ramaskandhan, MPT, MSc; Malik S. Deland, MD; Constantine A. Demetracopoulos, MD Siddique, FRCS (T&O)

Functional Analysis of Distraction Arthroplasty in the Total Ankle Arthroplasty in Valgus Deformity Treatment of Ankle Osteoarthritis Camilo Piga; Federico Giuseppe Usuelli, MD; Camilla Liang Xiaojun, MD; Zhao Hong-Mou, MD, PhD Maccario, MD; Claudia A. Di Silvestri, MD

Long-Term Follow Up of Correction of Moderate to Severe Deformity with the STAR Ankle Prosthesis ARTHROSCOPY Sudheer C. Reddy, MD; Roger A. Mann, MD; Kyle Zemeir, BS Accessibility of the Metatarsal Head Comparing Distraction and Plantarflexion in a 2-Portal Technique Long-Term Survivorship of the INBONE II Total for First Metatarsophalangeal (MTP 1) Joint Ankle Arthroplasty Arthroscopy Jonathan Day, MS; Jaeyoung Kim, MD; Scott J. Ellis, MD; Madeleine Willegger, MD; Katharina Czerny; Lena Hirtler Jonathan T. Deland, MD; Martin J. O’Malley, MD; Elizabeth Cody, MD; Constantine A. Demetracopoulos, MD Anterior Talofibular Ligament Reconstruction Could Produce Comparable Functional Outcomes With or Management of Periprosthetic Osteolysis After Total Without Calcaneofibular Ligament Reconstruction for Ankle Arthroplasty Chronic Lateral Ankle Instability Yoo Jung Park, MD; Kwang Hwan Park, MD, PhD; Shi-Ming Feng, MD Jae Han Park, MD; Seung Hwan Han, MD, PhD; Sang B. Kim; Jin Woo Lee, MD, PhD Arthroscopic Microfracture for Osteochondral Lesions of the Talus in Old Age Patient Measurement of Physical Activity Level in Patients with Hong S. Lee, MD; Kiwon Young, MD; Tae-Hoon Park; Ankle Osteoarthritis Hong Seop Lee Seiji Kimura, MD; Satoshi Yamaguchi, MD, PhD; Yoshimasa Ono Chronic Lateral Ankle Instability with Subtalar Instability: Does Lateral Ligaments Reconstruction Reliable? Shi-Ming Feng, MD 49 ePOSTERS

BASIC SCIENCES/BIOLOGICS AbobotulinumtoxinA in the Management of Hallux Valgus in Adult Patients: Results of a Randomised and A Comparison of Arch Index, Foot Posture Index, and Placebo-Controlled Phase 2 Trial Surgeon Observation for Foot Type Classification Robert Silva, PhD; Selene G. Parekh, MD, MBA; Lawrence Dukens LaBaze, BS; Alexandra Gabrielli, MD, MS; William A. DiDomenico, DPM; David G. Armstrong; Babak Anderst, PhD; MaCalus V. Hogan, MD Baravarian; Magali Volteau

Biomechanical Comparison of Zone 1 5th Metatarsal Accuracy of Percutaneous Lateral Release for Hallux Base Fracture Fixation Valgus: An Anatomic Study Bryan Bean, MD; Niall A. Smyth, MD; Pooyan Abbasi, MSc; Lara C. Atwater, MD; Matthew R. McDonald, MD; Brent Parks, MSc; Walter C. Hembree, MD Patrick J. Maloney, MD; Rebecca A. Cerrato, MD

Comparison of Clinically used Bilayer Collagen Crista Volume Measured from 3D Reconstructions Membrane and Trilayer Collagen Prototype Fixation of Weightbearing CT Scans Shows a Relationship to Stability in Chondral Defects at the Talus: An Sesamoid Station Experimental Human Specimen Study Stephen F. Conti, MD; Audrey Clarke; Matthew S. Conti, Martinus Richter, MD, PhD; Alexander Milstrey; Stefan MD; Scott J. Ellis, MD; Mark C. Miller, PhD; Amr A. Zech, MD; Angelika Grueter; Julia Evers; Michael J. Fadle, MD Raschke; Sabine Ochman Early Outcomes of Minimally Invasive Surgery Using Foot Loading Symmetry Is Improved After Percutaneous Technique for Hallux Valgus Unicompartmental Knee Arthroplasty Jae Han Park, MD; Kwang Hwan Park, MD, PhD; Yoo Jung Dukens LaBaze, BS; Milad Zarei, MS; Ken Urish, MD, PhD; Park, MD; Seung Hwan Han, MD, PhD; Sang B. Kim; Jin William Anderst, PhD; MaCalus V. Hogan, MD Woo Lee, MD, PhD

Influence of Platelet Rich Plasma on the Skeletal Minimal Invasive Hallux Valgus Surgery Muscle Fibrosis After Limb Lengthening in Mice Shay A. Tenenbaum, MD; Ran Thein; Erel Ben Ari, MD; Ichiro Tonogai, MD, PhD Niv Dreiangel; Jason T. Bariteau, MD; Nathan Bruck, MD; Oded R. Coifman, MD Pathological Characters and Molecular Pathogenesis of Diabetic Neuropathic Osteoarthropathy cartilages Novel Hallux Valgus Cadaveric Model: Role of Damage Ligament Damage and Tendon Pull in Recreating the Zhao Hong-Mou, MD, PhD Deformity Emilio Wagner, MD; Pablo Wagner, MD; Florencia J. Safety Profile of Artelon Use for Soft Tissue Pacheco; Carlos Villarroel; Felipe H. Palma, PT; Reconstruction in Foot and Ankle Surgery Syed H. Hussaini, MD; Daniel M. Dean, MD; Michael Kelly; Rodrigo Guzman-Venegas, MSc Daniel J. Cuttica, DO Outcome of Bunion Correction with First Tarsometatarsal Arthrodesis in Adult Acquired Flatfoot BUNION Deformity Correction Thomas B. Bemenderfer, MD, MBA; Jacob B. Boersma; 2-Week Post-Operative Opioid Use After Primary Hallux Michael J. Pryor; John D. Maskill, MD; Donald R. Bohay, Valgus Correction MD, FACS; John G. Anderson, MD Zachary T. Thier; Kenna C. Altobello; Tyler A. Gonzalez, MD, MBA; J. Benjamin Jackson, MD Outcomes of Modified Scarf Osteotomy for Male Hallux Valgus A Comparison of First Ray Length and Dorsiflexion Daniel J. Scott, MD, MBA; Samuel E. Ford, MD; Shannon After Arthrodesis, Osteotomy and Suture Button F. Alejandro, MD; David K. Myer, MD; Akira Taniguchi, MD; Procedures for Hallux Valgus Deformity James W. Brodsky, MD Ian Foran, MD; Nasima Mehraban; Stephen K. Jacobsen, MD, MSc; Daniel D. Bohl, MD, MPH; Johnny L. Lin, MD; Peak Contact Stress of TMT-1 Joint After Sequential Simon Lee, MD; George B. Holmes, MD; Kamran S. Correction of Hallux Valgus Using a Proximal Opening Hamid, MD, MPH Wedge Metatarsal Osteotomy (PMO) and Distal Soft Tissue Procedure Jonathan C. Kraus, MD; Michael Ziegele; Mei Wang; Brian C. Law, MD; Glenn G. Shi, MD

50 Abstracts available for viewing in the AOFAS mobile app.

Radiographic Correction After Hallux Valgus Surgery: A Staged Treatment Algorithm for the Management A Meta-Analysis of Severe Charcot Hindfoot Arthropathy, Using Christopher E. Gross, MD; Alexej Barg, MD Tibiotalocalcaneal Arthrodesis with Femoral Head Allograft Reduction of Foot Width with Triplanar Tarsometatarsal Aditya Manoharan; Ansab M. Khwaja, MD; Jacob Arthrodesis for Hallux Valgus Deformity: A Multicenter Sorenson; Cyrus V. Etebari; L. Daniel Latt, MD, PhD Study Justin Vaida; Justin J. Ray, MD; Taylor L. Shackleford; Antibiotic Loaded Calcium Sulphate/Hydroxy Apatite William T. DeCarbo, DPM; Daniel J. Hatch, FACFAS; Paul Bio Composite in Diabetic Foot Surgery Dayton, MS, DPM; Brett L. Smith, MD; Robert D. Santrock, Nijil L. Vasukutty, MRCSEd; Simon Mordecai; Murali MD; Jody McAleer, DPM Subramaniam; A Tarik; Bala Srinivasan

Relationship Between Demographic and Radiographic Combined Internal and External Fixation for Charcot Characteristics and 2nd Ray Pathology in Hallux Neuroarthropathy: A Learning Curve Valgus Patients Muhammed Iqbal; Sultan N. Qasim, FRCS(Tr&Orth); Simon Samantha Cronin; Matthew S. Conti, MD; Nicholas Chambers, FRCS Williams; Scott J. Ellis, MD Intra-surgical Site Vancomycin Powder Application Results of an Interim Analysis of a Prospective in Infected Diabetic Heel Ulcers with Calcaneal Multicenter Study Assessing Radiographic and Osteomyelitis Patient Outcomes Following Triplanar Tarsometatarsal James D. Brodell; Irvin Oh, MD Arthrodesis with Early Weightbearing Dane K. Wukich, MD; Robert D. Santrock, MD; Daniel Socioeconomic Distressed Communities Index C. Farber, MD; Abdi Raissi, MD; Avneesh Chhabra, MD; Associated with Higher Burden of Amputation in Jennifer Koay; Lauren Hill Diabetic Peripheral Arterial Disease Katherine J. Jensen, MS, MPH Shortening of the First Ray After First Tarsometatarsal Joint Fusion: A Cadaveric Comparison Between Curettage Versus Planal Resection HINDFOOT Calvin J. Rushing; Bryon J. McKenna; Travis M. Langan; A Comparative Study Between Lateral Approach Alone Patrick E. Bull, DO; Christopher F. Hyer, DPM; Gregory C. and Combination of Medial and Lateral Approaches Berlet, MD, FRCSC, FAOA for Intra-articular Calcaneal Fractures with Displaced The Shape of the First Metatarsal Head and Its Sustentaculum Fragment Association with Its Pronation Angle and the Presence Naohiro Hio, MD, PhD; Masanori Taki, MD, PhD of Sesamoid-Metatarsal Joint Osteoarthritis Achilles Injury and Access to Care in South Florida Yoshimasa Ono; Satoshi Yamaguchi, MD, PhD; Allison Boden; Joseph S. Geller; Caroline Granger, BS; Seiji Kimura, MD Spencer H. Summers, MD; Jonathan R. Kaplan, MD; Two Weeks of Kirschner Wire Fixation Following Amiethab A. Aiyer, MD Chevron Osteotomy for Hallux Valgus Analysis of Short-Term Outcome of Osteotomy Ryan G. Rogero, BS; Daniel Corr; Joseph T. O’Neil, MD; Combining with Soft Tissue Surgery in the Treatment Steven M. Raikin, MD of Symptomatic Children with Flexible Flatfoot Li Yi, MD; Liang Xiaojun, MD; Zhao Hong-Mou, MD, PhD

DIABETES Augmentation of Internal Fixation with Multiplanar External Fixator in High Risk Hindfoot Fusion Patients A Predictive Classification of Charcot Arthropathy of Meghan Kelly, MD, PhD; Scott R. Whitlow, MD; Spenser J. Foot and Ankle Cassinelli, MD; Gregory A. Lundeen, MD, MPH Mohamed Abdelaziz Elghazy, MD, MSc; Hani M. El- Mowafi; Ahmed El-Hawary; Yasser R. Kandil; Samer Ali; Biomechanical Results of Percutaneous Calcaneal Mazen S. Abulsaad Osteotomy Using Two Different Osteotomy Designs Natalia Gutteck, MD

Comparative Results of Percutaneous Calcaneal Osteotomy in Correction of Hindfoot Deformities Natalia Gutteck, MD

51 ePOSTERS

Comparative Study of Flexor Hallicus Longus Tendon Long-Term Outcomes of Immediate Weightbearing Length Through Single Incision or Accessory Plantar with Anchorless Achilles Debridement and Secondary Medial Incision: A Cadaver Study Reconstruction for Insertional Achilles Tendonopathy Caitlin Curtis Crocker, BS; Eildar Abyar, MD; Sean Young; Thomas B. Bemenderfer, MD, MBA; Jacob B. Boersma; Fatemah Razaghi, MD; Gerald McGwin, PhD; Michael D. John D. Maskill, MD; John G. Anderson, MD; Donald R. Johnson, MD Bohay, MD, FACS

Complications Associated with Triple Arthrodesis Outcomes of Gastrocnemius Recession in Patients Versus Non-Fusion Flatfoot Reconstruction: A Matched with Plantar Fasciitis and Achilles Tendinosis: A Cohort Study Retrospective Study of 160 Patients William V. Probasco, MD, MS; Benjamin E. Stein, MD; Wesley Stroud; Bradley Alexander, BS; Jared R. Halstrom, Cyrus Fassihi, MD; Lea McDaniel BS; Hannah M. Barranco; Benjamin B. Cage; Elise M. Greco; Tanvee Sinha; Ashish Shah, MD Evaluation of Ankle Mobility Loss in Patients Undergoing Subtalar Arthrodesis Outcomes of Tibiocalcaneal Arthrodesis in High Risk Tiago S. Baumfeld, MD; Roberto Zambelli de A. Pinto, MD; Patients: An Institutional Cohort of 18 Patients Fernando Araujo S. Lopes, MD; Daniel Baumfeld, MD; Bridgette Love; Bradley Alexander, BS; Jared R. Halstrom, Camilo Tavares BS; Hannah M. Barranco; Spaulding F. Solar; Benjamin B. Cage; Elise M. Greco; Jessyca Ray; Ashish Shah, MD Functional Implications of the Flat-Topped Talus Following Treatment of Idiopathic Clubfoot Deformity Outcomes of Tibiotalocalcaneal Arthrodesis Using Claire Shivers; Matthew Siebert; Kirsten Tulchin-Francis, a Custom Three-Dimensional Printed Titanium PhD; Wilshaw Stevens; Justine Borchard; Anthony Riccio; Truss Implant Jacob R. Zide, MD Daniel Corr; Jared Raikin, BS; Joseph T. O’Neil, MD; Steven M. Raikin, MD Headless vs. Headed Screws Fixation for Calcaneal Osteotomy and Subtalar Arthrodesis: What’s the Cost? Patient Outcomes After Surgical Release of the Tarsal Morgan Boren, DO; Brian D. Steginsky, DO; Anand M. Tunnel and Baxter’s Nerve in Addition to Partial Plantar Vora, MD; Mallory Suhling Fasciectomy for Chronic Heel Pain Blake Baer; Kathleen C. Ringenbach; Christopher E. Hindfoot Arthrodesis Using the Medial Approach Honstad; Paul J. Juliano, MD; Umur Aydogan, MD to Correct Adult Acquired Valgus Flat Feet: A Series of Cases Subtalar Distraction Arthrodesis for the Treatment of Gabriel F. Ferraz, MD; Miguel V. Pereira Filho, MD; Subtalar Arthritis and Severe Hindfoot Deformity: A Daniel Oksman Systematic Review Amanda N. Fletcher, MD; Jordan L. Liles, MD; Gregory F. Identification of the Medial Column Line Collapse Pereira, MD; John Steele, MD; Samuel B. Adams, MD Location Is Crucial in Flat Foot Management Andrew P. Molloy, MBChB, FRCS(Tr&Orth); Joseph Three-Spike Insole Can Substitute the Total Contact Alsousou, MD; Lizzy Weigelt, MD; Lyndon W. Mason, MD Insole (TCI) in Refractory Plantar Fasciitis: Randomized Control Trial Influence of Interventions on the Sural Complex Like Dong Woo Shim, MD the Gastrocnemius Recession on the Calf Strength Tonio Gottlieb; Kaj Klaue, MD LESSER TOES Integrated Reconstruction for Chronic Foot Dislocations Cartiva Hemiarthroplasty for the Treatment of Hallux Douglas N. Beaman, MD; Cassandra B. Tomczak; Rigidus Paul T. Fortin, MD Tyler Hoskins; Jay Patel, DO; David Goyette; Christopher Mazzei; Arianna L. Gianakos, DO; Justin Koss; James Long Term Autograft Harvest Site Pain After Ankle and Wittig; David M. Epstein, MD Hindfoot Arthrodesis Judith F. Baumhauer, MD, MS, MPH; Mark A. Glazebrook, Correction of Valgus Lesser Toes by Percutaneous MD, MSc, PhD; Alastair S. Younger, MBChB, ChM, Closing Wedge Osteotomy of the Proximal Phalanx FRCSC; David Fitch; Jovelyn Quiton; Timothy R. Daniels, Robbie Ray; Peter W. Robinson; Paul M. Dearden; Thomas MD, FRCSC; Christopher W. DiGiovanni, MD A. Goff; Peter Lam, MBBS, FAOrthA, FRACS(Orth); Thomas L. Lewis

52 Abstracts available for viewing in the AOFAS mobile app.

Minimally Invasive Correction for Symptomatic, Fixed Cerclage Fixation of Navicular Fractures Curly Toe Deformity Robert E. Gallivan, BSE; Paul C. Kupcha, MD Jun Young Choi, MD; Jin Soo Suh, MD, PhD Comparative Assessment of Midfoot Osteoarthritis The Percutaneous Technique for the Treatment of Diagnostic Sensitivity Using Weightbearing Computed Metatarsalgia with Metatarsophalangeal Dislocation of Tomography vs Weightbearing Radiography the Lesser Toes: Preliminary Results Jesse Steadman, BS; Yantarat Sripanich, MD; Chamnanni Gabriel F. Ferraz, MD; Tatiana F. Santos; Daniel Oksman; Rungprai, MD; Charles L. Saltzman, MD; Alexej Barg, MD Miguel V. Pereira Filho, MD Contribution of First Tarsometatarsal Joint Fusion The Positive Association Between Metatarsal Length to Deformity Correction in the Treatment of Adult and Meary’s Angle and Hammertoe Deformity Acquired Flatfoot Deformity Jesse King, BSc; Chris M. Stauch; Ryan M. Ridenour, MD; Jonathan Day, MS; Matthew S. Conti, MD; Nicholas Umur Aydogan, MD Williams; Scott J. Ellis, MD; Jonathan T. Deland, MD; Elizabeth Cody, MD

MIDFOOT/FOREFOOT Do We Really Need to Worry About Calcaneocuboid Subluxation During Lateral Column Lengthening for A Prospective Assessment of Great Toe Fusion Planovalgus Foot Deformity? Outcomes: The Effect of Concomitant Procedures Brittany Hedrick; Anthony Riccio; Matthew Siebert; Claire Mark J. Berkowitz, MD; Sara-Lyn Miniaci, MD; Alan Davis, Shivers; Mitchell Harris, MD; William A. Pierce; Danielle M. MD; Deepak Ramanathan, MD; Khalid Hasan, MD, MBBS, Thomas, MD; Jacob R. Zide, MD MPH; Greg Strnad, MS; Jeffrey Coombs; Yuxuan Jin; Kurt P. Spindler; Stephen J. Pinney, MD Early Outcomes of a Synthetic Cartilage Implant for Treatment of Hallux Rigidus: A Series of 87 Patients Ability to Show the Knuckles in Forefoot Helps to Michael A. Campbell, MD Assess Intrinsic Muscle Function Vinod K. Panchbhavi, MD; Michael Poliner; Patrick Fresh Cadaveric Study of the Distances Between the Finegan; Daniel Jupiter, PhD Deep Plantar Arch and the Lesser Metatarsals at Risk During Osteotomy of the Lesser Metatarsals Adverse Events Involving Hallux Metatarsophalangeal Ichiro Tonogai, MD, PhD Joint Implants: Comprehensive Analysis of US Food and Drug Administration Data from 2010 to 2018 Impact of Hardware Choice on Talonavicular Craig C. Akoh, MD; Rishin J. Kadakia, MD; Jie Chen, MD, Arthrodesis Non-Union Rate MPH; Young-uk Park, MD, PhD; Hyong Nyun Kim, MD, Daniel Corr; Parth Kothari, MD; David I. Pedowitz, MD, MS PhD; Juntao Wang, MD, PhD; Samuel B. Adams, MD Minimally Invasive Surgery for Correction of Adult An Analysis of Change in Patient-Reported Outcome Acquired Flat Foot Deformity: An Anatomic Study Measures Following First Metatarsophalangeal Joint Ademola I. Shofoluwe, MD; Erroll J. Bailey, MD; Gary W. Arthrodesis: Do Baseline Scores or Comorbidities Stewart, MD Make a Difference? Linzy Houchen-Wolloff; Maitravaarun Burgula; Nikhil Minimally Invasive versus Open Akin Osteotomy: Nanavati; Alistair J. Best; Patricia Allen, MBChB; Jitendra A Comparative Study Mangwani, MBBS, MS(Orth), FRCS(Tr&Orth) Sebastian Schilde; Natalia Gutteck, MD; Karl-Stefan Delank, PhD Anatomical Study of Lapidus Arthrodesis Using Two Different Plantarplate Systems Mortality and Conversion Rate to Below Knee Sebastian Schilde; Natalia Gutteck, MD; Karl-Stefan or Above Knee Amputation Following Delank, PhD Transmetatarsal Amputation D. Anthony Barcel, MD; Susan M. Odum, PhD; Taylor Arthrodesis Tarsometatarsal in Lisfranc Fracture: Rowe; Jefferson B. Sabatini, MD; Samuel E. Ford, MD; Comparison of Different Fixing Methods J. Kent Ellington, MD, MS; Carroll P. Jones III, MD; W. Mario Muñoz; Gregorio I. Verschae, MD; Hodges Davis, MD; Todd A. Irwin, MD Sebastian Drago, MD; Joaquín A. De la Paz Valenzuela; Jose M. Rojas Fuentes Outcomes Following Subchondroplasty in the First Metatarsal Head Akhil Sharma; Craig C. Akoh, MD; Selene G. Parekh, MD, MBA

53 ePOSTERS

Postoperative Rehabilitation in Ankle and Hindfoot/ Surgical Outcomes After Simple Coalition Bar Excision Midfoot Fusion and Reconstruction Surgery: A Scoping in Naviculo-Medial Cuneiform Coalition in Adults Survey of UK Foot and Ankle Surgeons and Allied Jaeyoung Kim, MD; Jonathan Day, MS; Health Professionals Woo-Chun Lee, MD Linzy Houchen-Wolloff; Rachel S. Calver; Chloe Dudson; Amirah Essop-Adam; Jitendra Mangwani, MBBS, Surgical Outcomes in Chronic Lisfranc Injuries Without MS(Orth), FRCS(Tr&Orth) Secondary Degenerative Arthritis: A Systematic Literature Review Predictors of Malreduction in Zone II and III 5th Yantarat Sripanich, MD; Jesse Steadman, BS; Nicola Metatarsal Fractures Fixed with an Intramedullary Krahenbuhl, MD; Chamnanni Rungprai, MD; Justin Haller; Screw: A Retrospective Analysis Charles L. Saltzman, MD; Alexej Barg, MD Ankit Khurana, MBBS; Charles C. Pitts, MD; Bradley Alexander, BS; Akshar Patel, BS; Charles R. Sutherland; Tibialis Anterior Tendon Partial Release and Elise M. Greco; Benjamin B. Cage; Ashish Shah, MD Plantar Implant Placement for Midfoot Arthrodesis: Technique Tip Primary Arthrodesis versus Open Reduction and Daniel Miles; Tyler W. Fraser, MD; Neal Huang; Internal Fixation Outcomes for Lisfranc Injuries: Franklin B. Davis; Jesse F. Doty, MD An Analysis of Conflicting Meta-Analysis Results Wesley D. Peters, BS; Vinod K. Panchbhavi, MD Triple Osteotomy for Correction of Hallux Valgus with an Increased Distal Metatarsal Articular Angle Radiographic Outcomes, Union Rates, and Li Yi, MD; Liang Xiaojun, MD; Zhao Hong-Mou, MD, PhD Complications Associated with Implants Positioned on the Plantar Bone Surface for Midfoot Arthrodesis Tyler W. Fraser, MD; Daniel Miles; Franklin B. Davis; OTHER Jesse F. Doty, MD A Decade of Social Media Influence on Foot and Radiographic Characterization of Midfoot and Ankle Literature Transverse Tarsal Joint Osteoarthritis James M. Parrish; Jonathan R. Kaplan, MD; Amiethab A. Alexander Caughman; Alexander Caughman; Aiyer, MD Christopher E. Gross, MD A Retrospective Analysis of Outcomes from Foot and Radiographic Outcomes in the Treatment of Type II Ankle Arthrodesis and Open Reduction and Internal Adult Acquired Flatfoot Deformity Following Lateral Fixation Using Cellular Bone Allograft Augmentation Column Lengthening with a Titanium Wedge versus Thomas E. Moran; Sean Sequeira; M. Truitt Cooper, MD; Autograft or Allograft Joseph S. Park, MD Casey M. O’Connor; Afshin Anoushiravani, MD; Kyle A Retrospective Chart Review Examining Gabapentin’s Richardson, MD; Matthew Anderson, MD; Andrew J. Potential Neuroprotective Effects in Peripheral Nerve Rosenbaum, MD Blocks Subtalar Arthroereisis as an Adjunct Procedure David M. Shuster; Jacob Brower; Nicholas A. Cheney, DO; Improves Forefoot Abduction in Stage IIb Adult- Brian C. Clark Acquired Flatfoot Deformity A Retrospective Chart Review to Examine Alessio Bernasconi, MD; Miltiadis Argyropoulos; Shelain Intracompartment Pressures and Postoperative Patel, FRCS; Yaser Ghani; Nicholas Cullen, FRCS(Orth); Outcomes of Chronic Exertional Compartment Dishan B. Singh, MBChB, FRCS(Orth); Matthew J. Welck, Syndrome MD, FRCS(Orth) Jacob Brower; David M. Shuster; Nicholas A. Cheney, DO; Success or Failure? Reanalysis of the Cartiva MOTION Brian C. Clark Study Using an Alternative Pain Paradigm and An Analysis of Orthopaedic Job Availability in the Statistical Assumptions United States Based on Subspecialty Gregory P. Guyton, MD Jeremy Y. Chan, MD; Timothy P. Charlton, MD; David B. Thordarson, MD

An Update of Foot and Ankle Fellowship Website Content and Accessibility Ansab M. Khwaja, MD; Peter Z. Du; Nathan Sherman; Lisa Truchan

54 Abstracts available for viewing in the AOFAS mobile app.

Applying the Periprosthetic Joint Infection Consensus Robotic Arm Assistances in the Foot and Ankle Definition to a Case Series of Revision Foot and Surgery: A Prospective Study Ankle Implant-Associated and Infection-Suspected Chayanin Angthong, MD, PhD Procedures to Assess Diagnosis Erin A. Baker, PhD; Jackson Harley, BS; Corinn Gehrke, The Jones Dressing Cast for Safe Aftercare of Foot MS; David J. Ciufo, MD; Paul T. Fortin, MD; Zachary M. and Ankle Surgery: A Modification of the Jones Vaupel, MD Dressing Bandage Tonio Gottlieb; Kaj Klaue, MD Combined Suspensory and Aperture Fixation of Posterior Tibialis Tendon Anterior Transfer for Dropfoot The Perceived Effectiveness of a Short-Term Robbie Ray; Richard Navratil; Andrew Ogilvie; Orthopaedic Foot and Ankle Mission Trip to Kenya Thomas L. Lewis Eric C. Gokcen, MD; Joshua C. Luginbuhl, MD; Joshua C. Luginbuhl, MD Comparative Evaluation of the Presence of Insertion Enthesophyte in the Achilles Tendon by X-Ray and The Utilization of Physician Cell Phone Numbers by Magnetic Resonance Imaging: Intra and Inter Observer Patients in an Orthopaedic Surgery Practice Reliability Ryan G. Rogero, BS; Daniel Corr; Meghan Bishop; Tiago S. Baumfeld, MD; Thiago A. Silva; Wilel A. Brandon Erickson; Daniel Seigerman; Daniel C. Smith; Benevides, MD; Dário M. Silveira; Daniel Baumfeld, MD Samir Sodha; Howard Yeon; Justin Tsai, MD

Foot and Ankle Fellowship Faculty Research Trends of Foot and Ankle Publishing in JBJS[A] Over a Productivity 15 Year Period from 2004-2018 Ansab M. Khwaja, MD; Nathaniel Bridge; Nathan Sherman; Bradley Alexander, BS; James Hicks; Abhinav Agarwal, Peter Z. Du MBBS; Aaradhana J. Jha, MBBS, MS; Spaulding F. Solar; Benjamin B. Cage; Ashish Shah, MD Level of Evidence and Authorship Trends in Foot and Ankle Related Trauma Publications Bradley Alexander, BS; James R. Jones; Spaulding F. SPORTS Solar; Abhinav Agarwal, MBBS; Benjamin B. Cage; Elise Achilles Tendon Repair: Can Patients Read, M. Greco; Ashish Shah, MD Understand, and Act on Online Educational Major Mistakes in Current Scientific Presentations Resources? Arthur Manoli II, MD; Arthur Manoli III, MD Burke Gao, MD; Alan G. Shamrock, MD; Trevor Gulbrandsen; John E. Femino, MD; Cesar de Cesar Netto, Predictive Variables for Patient Compliance with MD, PhD; Kyle R. Duchman, MD Physician Prescribed Orthotics Trenton T. Stevens, MD; Clayton C. Bettin, MD; G. Andrew Calcaneal Stress Reaction with Distal Anchor Fixation Murphy, MD; David R. Richardson; Benjamin J. Grear, MD; for Mid-Substance Achilles Ruptures Jacob T. Hartline Seth C. Shoap, BA, BS; Christina Freibott, BA; Hans Polzer, MD; J. Turner Vosseller, MD Preoperative Planning for the Foot and Ankle: A Technique Tip Clinical Safety and Outcomes of a Novel Ultrasound Caroline Williams, MS; John Y. Kwon, MD; Max Michalski, Assisted Bioabsorbable Suture Anchor in Foot and MD; Christopher P. Miller, MD, MHS Ankle Surgeries Jie Chen, MD, MPH; Akhil Sharma; Craig C. Akoh, MD; Prevalence and Related Factors of Flexible Flatfoot in Rishin J. Kadakia, MD; Selene G. Parekh, MD, MBA School-Aged Children: A Cross-Sectional Study Liang Xiaojun, MD; Zhao Hong-Mou, MD, PhD Current Practices in the Treatment of Syndesmotic Injuries: A Global Perspective Readability and Suitability of Patient-Reported Jonathan Bartolomei; Shanthan C. Challa; Kenneth J. Hunt, Outcome Measures in Foot and Ankle Surgery: A MD; Daniel K. Moon, MD, MS, MBA Health Literacy Assessment Christina Freibott, BA; Seth C. Shoap, BA, BS; J. Turner Excisional Debridement for Chronic Achilles Insertional Vosseller, MD Tendinosis: Technique and Case Series Tara E. Gaston, DO; Hope Skibicki, DO; Megan C. Resuming Humanitarian Medical Trips After COVID-19: Chapter, DO; Quincy Cheesman; Joseph N. Daniel, DO Perspectives from Volunteers Eric C. Gokcen, MD; J. Turner Vosseller, MD

55 ePOSTERS

Retrospective Comparison of Complications with Open Arthroscopic Findings During Routine Ankle ORIF: versus Minimally Invasive Achilles Tendon Repair What Is Being Missed? Seth C. Shoap, BA, BS; Christina Freibott, BA; Hans Shain Howard; Victor C. Hoang, DO, BS; Troy S. Watson, Polzer, MD; J. Turner Vosseller, MD MD; Candice L. Brady, DO; Adam Eudy, DO

Return to Play After Open Repair for Achilles Rupture Clinical Outcome of Bimalleolar Ankle Fracture in in Recreational Athletes Patients with Diabetes Mellitus Hong S. Lee, MD; Kiwon Young, MD; Tae-Hoon Park; Hong S. Lee, MD; Kiwon Young, MD; Tae-Hoon Park; Hong Seop Lee Hong Seop Lee

The Clinical Outcomes After a Novel Mini-Open Achilles Comparison of Open Syndesmotic Repair and Tendon Repair Trans-syndesmotic Screw Fixation: Craig C. Akoh, MD; Amanda N. Fletcher, MD; Selene G. A Biomechanical Study Parekh, MD, MBA; Akhil Sharma Hong S. Lee, MD; Kiwon Young, MD; Tae-Hoon Park; Hong Seop Lee The Efficacy of Unfocused Extracorporeal Shock Waves for the Treatment of Achilles Tendinopathy Compression Wrapping for Calcaneal Fractures Ashraf M. Fansa, MBBCh; Martin J. O’Malley, MD; After Extensile Lateral Approach: Results of a Eoghan T. Hurley, MBBCh, BAO; John G. Kennedy, MD, Retrospective Study FRCS(Orth) Robert Kulwin, MD; Sapan Shah, MD; Steven L. Haddad, MD; Brian M. Weatherford, MD Treatment of Zone II and III Fifth Metatarsal Fractures Using a Novel Fixation Technique Efficacy of Ultrasonography for MIPO in Distal Tibia Stephanie K. Eble; Oliver B. Hansen; Martin J. O’Malley, Fractures MD; Mark C. Drakos, MD Gi-Soo Lee, MD; Jaehwang Song, MD; Chan Kang, MD

Trends in Pediatric Skateboard Related Foot and Ankle Fracture Type, Postoperative Articular Congruency Injuries Presented to US Emergency Departments from and Obesity of Patients Influenced on Long to 2009-2018: A Descriptive Epidemiology Study Midterm Outcome of Posterior Malleolar Fractures Devon Scott; Stephen P. Canton; MaCalus V. Hogan, MD; in Ankle Injury Dukens LaBaze, BS Sung Hyun Lee, MD

Trends in Sport Related Foot and Ankle Injuries How Obesity Affects Need for Syndesmotic Fixation in in Adults 65 and Over Presenting to US Malleolar Ankle Fractures and Ankle Fracture Severity Emergency Rooms from 2009-2018: A Descriptive Jonathan B. Goodloe; Alexander Caughman; Sophia A. Epidemiology Study Traven; Harris Slone; Christopher E. Gross, MD Devon Scott; Stephen P. Canton; MaCalus V. Hogan, MD; Dukens LaBaze, BS Impact of Socioeconomic Status on Return to Work After Acute Ankle Fracture Alessandra L. Falk, MD; Regina Hanstein; Chaiyaporn TRAUMA Kulsakdinun, MD

A Detailed Analysis of Workplace Foot and Incidence and Trends in Lower Extremity Amputations Ankle Injuries in the United States Alexander Caughman; Christopher E. Gross, MD Leah Herzog, MD; Charles Johnson; Christopher E. Gross, MD Achilles Tendon Rupture Repairs: A Case Series Reporting Clinical Outcomes of a Novel Technique Independent Inter- and Intra-Rater Reliability of Caroline Williams, MS; Christopher P. Miller, MD, MHS; the New AO and Leonetti/Tigani Systems for Pilon John Y. Kwon, MD Fractures Based on CT-Scan. Benjamin Guiloff; Andres Villa, MD; Joaquin Ananias; Anatomic Relationship of the Sural Nerve When Pablo Mery, MD; Gerardo Ledermann; Joaquin Palma, MD; Performing Achilles Tendon Repair Using the Ignacio Correa Percutaneous Achilles Repair System: A Cadaveric Study Instagram and Pilon Fractures: An Analysis of Social Roddy McGee, DO; Troy S. Watson, MD; Adam Eudy, DO; Media and its Relationship to Patient Injury Perception Candice L. Brady, DO; Cheryl Vanier; Daniel LeCavalier; James M. Rizkalla, MD; Tanner Lines; Yahya Daoud, PhD; Victor C. Hoang, DO, BS Jacob R. Zide, MD

56 Abstracts available for viewing in the AOFAS mobile app.

Intramedullary Fixation of Calcaneal Fractures: Reliability of Evaluating Methods Using Weightbearing Early US Experience Radiograph of the Foot in Lisfranc injuries Kevin C. Anderson, MD Yuki Sugino; Ichiro Yoshimura, MD; Tomonobu Hagio, MD, PhD; Masaya Nagatomo; Takuaki Yamamoto, MD Long-Term Patient Reported Outcomes After Correction of Traumatic Foot Drop Repair of a Comminuted Talar Neck Fracture Using Jessica M. Kohring, MD; Steven Karnyski, MD; Peter Joo, a Cellular Bone Allograft Combined with a Textured BS; Andrew Y. Liu, MD; Judith F. Baumhauer, MD, MS, Allograft Wedge MPH; Adolph S. Flemister, MD; John P. Ketz, MD Alaa Mansour; Timothy D. Howard; Elena Gianulis; Danielle Scheunemann Low Risk of Displacement with Early Weight Bearing of the Isolated Weber B Fracture: Results of a New Repair of Complex Bone and Soft Tissue Defect of Treatment Protocol Foots with Free Double Folded Fibular Composite N. Jane Madeley, MRCS, MBChB, FRCS(Tr&Orth); Nnamdi Tissue Flap Obi; Chinnasamy Senthil Kumar, MBBS, FRCS(Tr&Orth); Peiji Wang, MD Lech Rymaszewski Results of Staged Treatment with External Fixation for Low Risk of Wound Complications with Sinus Tarsi High Energy Calcaneus Fractures Approach for Treatment of Calcaneus Fractures Jessica M. Kohring, MD; Mackenzie A. Neumaier; John P. S. Blake Wallace, MD; David O’Neill; Anish Narayanan; Ketz, MD George T. Liu, DPM; Avneesh Chhabra, MD; Dane K. Wukich, MD; Trapper Lalli, MD Return to Weightbearing and High Impact Activities Following Jones Fracture Intramedullary Screw Mismanaged Ankle Fractures: Is It Too Late to Save Fixation in 32 Consecutive Patients Treated by a the Joint? Single Surgeon Mohamed M. Abd-Ella, MD John P. Scanaliato; Nicholas Kusnezov, MD; Kenneth Heida, MD; John C. Dunn; Justin D. Orr, MD Ortho-Plastic Approach in Management of Open Pilon Fractures Safe Level for the Syndesmotic Stabilization: A Jiang An Lim; Azeem Thahir; Matija Krkovic Simulated MRI Study Chayanin Angthong, MD, PhD Outcomes of Plantaris Tendon Augmentation in Acute Achilles Tendon Rupture Repair The Lateral Trans-Malleolar Approach for Posterior Ryan G. Rogero, BS; Daniel Corr; Andrew Fisher, BS; Malleolar Fracture of the Ankle: A Clinical and Joseph T. O’Neil, MD; Daniel J. Fuchs, MD; Steven M. Computed Tomography Evaluation Raikin, MD Masanori Taki, MD, PhD; Naohiro Hio, MD, PhD

Pediatric Calcaneus Fractures and Associated Injuries Treatment of Recurrent Peroneal Tendon Dislocation Norman H. Ward, III, MD; Brennan P. Roper; John W. by Peroneal Retinaculum Reattachment Without Munz; William C. McGarvey, MD; Alfred Mansour Fibular Groove Deepening Seung-Hwan Park; Jaehyung Lee; Young Rak Choi; Postoperative Noncompliance Following Repair of Jaehyeon Seo; Ho-seong Lee, MD Acute Achilles Tendon Ruptures Ryan G. Rogero, BS; Daniel Corr; Andrew Fisher, BS; What Is the Effect of Lateral Ankle Ligament Injury on Joseph T. O’Neil, MD; Daniel J. Fuchs, MD; Steven M. Syndesmotic Stability?: Arthroscopic Evaluation Raikin, MD Go Sato; Jirawat Saengsin; Rohan Bhimani, MD, MBA; Noortje Hagemeijer, MD; Bart Lubberts, MD, PhD; Daniel Profile vs Tubular Plate in Unimalleolar or Bimalleolar Guss, MD, MBA; Gregory R. Waryasz, MD; Christopher W. Fractures: Is There a Real Difference in Wound DiGiovanni, MD Complications? Paolo Ceccarini, MD; Rosario Petruccelli; Michele Bisaccia; Giuseppe Rinonapoli, MD; Auro Caraffa

Radiographic Outcomes of Intramedullary Fixation of the Distal Fibula in Unstable Ankle Fractures Connor Delman, MD; Augustine Saiz, MD; Max Haffner, MD; Aman Arora, MPH, MPH; Satninderdeep Bhatti, MPH; Eric Giza, MD; Christopher D. Kreulen, MD, MS

57 DISCLOSURES

Bijan Abar (Presenter, ePoster Presenter) Amgad Haleem Amin, MD, PhD (Co-Author, Moderator) No Relevant Financial Relationships • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society Mohamed Abd-Ella, MD (Planner, ePoster Presenter) • Foot and Ankle International: Medical/Orthopaedic No Relevant Financial Relationships publications editorial/governing board • Foot and Ankle Orthopaedics: Medical/Orthopaedic Mohamed Abdelaziz Elghazy, MD, MSc (Co-Author) publications editorial/governing board No Relevant Financial Relationships • Orthopedic Society of Oklahoma: Board member/ committee appointments for a society Samuel Adams, MD (Presenter) • Exactech Inc.: Speaker’s Bureau/Presenter, Paid Tonya An, MD (Co-Author) Consultant No Relevant Financial Relationships • Stryker: Speaker’s Bureau/Presenter, Paid Consultant • Orthofix Inc.: Speaker’s Bureau/Presenter, Paid Kevin Anderson, MD (ePoster Presenter) Consultant No Relevant Financial Relationships • medshape: Stock or Stock Options • American Orthopaedic Foot and Ankle Society: Board Chayanin Angthong, MD, PhD (ePoster Presenter) member/committee appointments for a society No Relevant Financial Relationships

Adeshina Adeyemo (Presenter) Pierre-Marc April, MD, FRCSC (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Kiran Agarwal-Harding, MD (Presenter) Michael Aronow, MD (Presenter) No Relevant Financial Relationships • CreOsso, LLC: Stock or Stock Options • Foot and Ankle International: Medical/Orthopaedic Avinesh Agarwalla (Presenter) publications editorial/governing board No Relevant Financial Relationships • Foot and Ankle Orthopaedics: Medical/Orthopaedic publications editorial/governing board Amiethab Aiyer, MD (Co-Author, Presenter, • Techniques in Foot and Ankle Surgery: Medical/ ePoster Presenter) Orthopaedic publications editorial/governing board • Arthrex Inc: Paid Consultant • Techniques in Orthopaedics: Medical/Orthopaedic • Medline: Paid Consultant publications editorial/governing board • Medshape: Paid Consultant • American Orthopaedic Foot and Ankle Society: Board • Elsevier: Royalties, Financial or Material Support from member/committee appointments for a society Publishers • AAOS: Board member/committee appointments for a • American Orthopaedic Foot and Ankle Society: Board society member/committee appointments for a society • Connecticut Orthopaedic Society: Board member/ committee appointments for a society Craig Akoh, MD (Presenter, ePoster Presenter) No Relevant Financial Relationships Soheil Ashkani-Esfahani (Presenter) No Relevant Financial Relationships Assaf Albagli, MD, DVM (Co-Author) No Relevant Financial Relationships Lara Atwater, MD (ePoster Presenter) • American Orthopaedic Foot and Ankle Society: Board Shannon Alejandro, MD (Presenter) member/committee appointments for a society No Relevant Financial Relationships Umur Aydogan, MD (Presenter, ePoster Presenter) Brad Alexander, BS (Co-Author) No Relevant Financial Relationships This individual reported nothing to disclose Michael Aynardi, MD (Presenter) Meshal Alhadhoud, MBChB (ePoster Presenter) • Arthrex Inc: Paid Consultant • American Orthopaedic Foot and Ankle Society: Board • Stryker: Paid Consultant member/committee appointments for a society • Arthrex Inc.: Research Support • American Orthopaedic Foot and Ankle Society: Board Megan Allen, MPH (ePoster Presenter) member/committee appointments for a society No Relevant Financial Relationships

58 Andrew Badley, MD (Presenter) Judith Baumhauer, MD, MS, MPH (Presenter, • Abbvie: Paid Consultant ePoster Presenter) • Corvus: Paid Consultant • Nextremity Solutions: Royalties, Paid Consultant, Stock or • Zentalis: Stock or Stock Options Stock Options • Nference: Stock or Stock Options • Wright Medical Group N.V.: Paid Consultant, Research • Frontiers in Virology: Medical/Orthopaedic publications Support editorial/governing board • Stryker: Paid Consultant • PLoS One: Medical/Orthopaedic publications editorial/ • DJ Orthopaedics: Paid Consultant governing board • Clinical Orthopaedics and Related Research: Royalties, • Case Reports in Medicine: Medical/Orthopaedic Financial or Material Support from Publishers, Medical/ publications editorial/governing board Orthopaedic publications editorial/governing board • HIV/AIDS - Research and Palliative Care: Medical/ • Journal of Bone and Joint Surgery - American: Royalties, Orthopaedic publications editorial/governing board Financial or Material Support from Publishers, Medical/ • International Journal of Emergency Medicine: Medical/ Orthopaedic publications editorial/governing board Orthopaedic publications editorial/governing board • PROMIS Health Organization: Board member/committee • 10. Journal of Cell Death: Medical/Orthopaedic appointments for a society publications editorial/governing board • Journal of Infectious Diseases: Medical/Orthopaedic Douglas Beaman, MD (Presenter, ePoster Presenter) publications editorial/governing board • Smith & Nephew: Speaker’s Bureau/Presenter • The Open Virology Journal: Medical/Orthopaedic • Acumed LLC: Paid Consultant publications editorial/governing board • Transplantation: Medical/Orthopaedic publications Bryan Bean, MD (ePoster Presenter) editorial/governing board No Relevant Financial Relationships

Blake Baer (Co-Author) Steve Behrens, MD (Planner, Co-Author, Moderator) No Relevant Financial Relationships • Medline: Paid Consultant

Erin Baker, PhD (Presenter, ePoster Presenter) Thomas Bemenderfer, MD, MBA (Presenter, • DePuy Synthes: Research Support ePoster Presenter) No Relevant Financial Relationships Leonard Banza, MD (Presenter) No Relevant Financial Relationships Mark Berkowitz, MD (ePoster Presenter) No Relevant Financial Relationships D. Anthony Barcel, MD (ePoster Presenter) No Relevant Financial Relationships Gregory Berlet, MD, FRCSC, FAOA (Presenter, ePoster Presenter) Jason Bariteau, MD (Planner, Co-Author, Moderator, • Zimmer: Royalties, Research Support Presenter) • Internal Life Sciences: Speaker’s Bureau/Presenter, Paid • Stryker: Paid Consultant, Research Support Consultant • American Orthopaedic Foot and Ankle Society: Board • Wright Medical Group N.V.: Paid Consultant, Stock or member/committee appointments for a society Stock Options, Royalties, Speaker’s Bureau/Presenter • Crossroads Extremity Systems: Paid Consultant Jonathan Bartolomei (ePoster Presenter) • Paragon28: Paid Consultant No Relevant Financial Relationships • Tissue Tech: Stock or Stock Options • Biomet: Royalties Gonzalo Bastias, MD (Presenter) • Stryker: Royalties No Relevant Financial Relationships • Artelon: Speaker’s Bureau/Presenter, Paid Consultant, Stock or Stock Options Daniel Baumfeld, MD (Presenter, ePoster Presenter) • Medline: Paid Consultant • Arthrex Inc: Speaker’s Bureau/Presenter, Paid Consultant • Medshape: Paid Consultant • Brazilian Foot and Ankle Society: Board member/ • Ossio: Paid Consultant, Stock or Stock Options committee appointments for a society • Curvebeam: Stock or Stock Options • Amniox: Stock or Stock Options Tiago Baumfeld, MD (ePoster Presenter) • GLW: Stock or Stock Options No Relevant Financial Relationships • Springer: Royalties, Financial or Material Support from Publishers

59 DISCLOSURES

Alessio Bernasconi, MD (Co-Author, Presenter, Jacob Brower (ePoster Presenter) ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships John Burke, MD (Presenter) Mohit Bhandari, MD, FRCSC, PhD (Moderator, No Relevant Financial Relationships Presenter) • Acumed LLC: Speaker’s Bureau/Presenter Arne Burssens, MD (Presenter) • Sanofi-Aventis: Speaker’s Bureau/Presenter • Curvebeam LLC: Paid Consultant • International Weightbearing CT Society: Board member/ Rohan Bhimani, MD, MBA (Presenter) committee appointments for a society No Relevant Financial Relationships James Butler (Co-Author) Rogerio Bitar (Presenter) No Relevant Financial Relationships • Wright Medical Group N.V.: Royalties, Speaker’s Bureau/Presenter, Paid Consultant Jarrett Cain, MSc, DPM (Presenter) • CareStream Health: Paid Consultant R. Dale Blasier, MD (Presenter) • Kinos Medical: Paid Consultant • OMeGA Medical Grants association: Board • Wright Medical Group N.V.: Paid Consultant member/committee appointments for a society • Journal of Foot & Ankle Surgery: Medical/Orthopaedic publications editorial/governing board Eric Bluman, MD, PhD (Moderator, Presenter) • Wolters Kluwer Health – Lippincott Williams & Wilkins: John Campbell, MD (Planner, Moderator) Royalties, Financial or Material Support from Publishers • Paragon28: Research Support • Techniques in Foot & Ankle Surgery: Medical/ • Foot and Ankle International: Medical/Orthopaedic Orthopaedic publications editorial/governing board publications editorial/governing board • Journal of Medical Innovation: Medical/Orthopaedic • American Orthopaedic Foot and Ankle Society: Board publications editorial/governing board member/committee appointments for a society • Orthopedic Foot and Ankle Foundation: Board member/ committee appointments for a society Michael Campbell, MD (ePoster Presenter) • Wright Medical Group N.V.: Speaker’s Bureau/Presenter, Henry Boateng, MD, MSc (Presenter) Research Support No Relevant Financial Relationships • BESPA: Speaker’s Bureau/Presenter, Paid Consultant • Orthofix Inc.: Speaker’s Bureau/Presenter Peter Bock, MD (Presenter) • Crossroads Extremity: Speaker’s Bureau/Presenter No Relevant Financial Relationships • Exactech Inc.: Stock or Stock Options

Daniel Bohl, MD, MPH (Presenter, ePoster Presenter) Stephen Canton (Presenter) • OPED: Research Support No Relevant Financial Relationships • AOFAS: Medical/Orthopaedic publications editorial/ governing board Linying Cao (Co-Author) No Relevant Financial Relationships Morgan Boren, DO (ePoster Presenter) No Relevant Financial Relationships Kristin Caolo, BA (Presenter, ePoster Presenter) No Relevant Financial Relationships Kevin Bozic, MD, MBA (Presenter) • OM1 Inc.: Royalties Nicholas Casscells, MD (Presenter) • Carrum Health: Stock or Stock Options No Relevant Financial Relationships • Centers for Medicare and Medicaid Services: Paid Consultant Waleed Cassis, BA (ePoster Presenter) • Harvard Business School: Unpaid Consultant No Relevant Financial Relationships • American Joint Replacement Registry: Board member/ committee appointments for a society Alexander Caughman (ePoster Presenter) No Relevant Financial Relationships Greggory Brandle (ePoster Presenter) No Relevant Financial Relationships Paolo Ceccarini, MD (ePoster Presenter) No Relevant Financial Relationships James Brodell (ePoster Presenter) No Relevant Financial Relationships Rebecca Cerrato, MD (Moderator, Presenter) • Wright Medical Group N.V.: Speaker’s Bureau/Presenter, Kimberly Broughton, MD (Presenter) Paid Consultant No Relevant Financial Relationships • Medartis: Speaker’s Bureau/Presenter

60 • Synthes: Paid Consultant Matthew Conti, MD (Presenter) • American Orthopaedic Foot and Ankle Society: Board • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society member/committee appointments for a society • GRECMIP: Board member/committee appointments for a society Stephen Conti, MD (ePoster Presenter) No Relevant Financial Relationships Monique Chambers, MD (Presenter) No Relevant Financial Relationships Daniel Corr (Presenter, ePoster Presenter) No Relevant Financial Relationships Jeremy Chan, MD (Presenter, ePoster Presenter) No Relevant Financial Relationships Donald Covell, MD (ePoster Presenter) • Wright Medical Group N.V.: Paid Consultant Jimmy Chan, MD (ePoster Presenter) • Medshape: Stock or Stock Options, Paid Consultant No Relevant Financial Relationships Caitlin Curtis Crocker, BS (ePoster Presenter) Timothy Charlton, MD (Moderator) No Relevant Financial Relationships No Relevant Financial Relationships Samantha Cronin (ePoster Presenter) Jie Chen, MD, MPH (ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships Daniel Cunningham, MD (Presenter) Kevin Chen, MD (Co-Author) No Relevant Financial Relationships This individual reported nothing to disclose Daniel Cuttica, DO (Co-Author) Lan Chen, MD (Moderator) • Treace: Speaker’s Bureau/Presenter, Paid Consultant No Relevant Financial Relationships • Artelon: Paid Consultant • Trident: Paid Consultant Yun Jae Cho (Co-Author, ePoster Presenter) No Relevant Financial Relationships Rachael Da Cunha, MD (Moderator) No Relevant Financial Relationships Jun Young Choi, MD (Presenter, ePoster Presenter) No Relevant Financial Relationships Timothy Daniels (Co-Author, Presenter) • Integra: Royalties, Speaker’s Bureau/Presenter, Young Rak Choi (Presenter) Paid Consultant, Research Support No Relevant Financial Relationships • Wright Medical Group N.V.: Speaker’s Bureau/Presenter, Paid Consultant, Research Support Peter Choi (Co-Author) • Foot and Ankle Orthopaedics: Medical/Orthopaedic This individual reported nothing to disclose publications editorial/governing board

Bopha Chrea, MD (Co-Author, Presenter) William Davis (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

David Ciufo, MD (Presenter) Laura Dawson, DO (Moderator, Presenter) No Relevant Financial Relationships This individual reported nothing to disclose

Michael Clare, MD (Planner) Jonathan Day, MS (Co-Author, Presenter, No Relevant Financial Relationships ePoster Presenter) No Relevant Financial Relationships Elizabeth Cody, MD (Co-Author, Presenter) • American Orthopaedic Foot and Ankle Society: Board Daniel Dean, MD (Presenter) member/committee appointments for a society No Relevant Financial Relationships

Bruce Cohen, MD (Moderator, Presenter) Graham DeKeyser, MD (Presenter) • Arthrex Inc: Royalties No Relevant Financial Relationships • DJ Orthopaedics: Royalties • Wright Medical Group N.V.: Royalties, Paid Consultant • Amniox: Paid Consultant • Tissue Tech: Stock or Stock Options • Acumed LLC: Research Support • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society

61 DISCLOSURES

Jonathan Deland, MD (Co-Author, Presenter) • Paragon28: Stock or Stock Options, Other Financial or • Arthrex Inc: Royalties Material Support • Zimmer: Royalties • Arthrex Inc: Research Support • Lima Corporate: Unpaid Consultant • Butterfly Network: Research Support • Wright Medical Group N.V.: Stock or Stock Options • Orfiks Inc: Research Support • OrthoScan, Inc: Research Support Connor Delman, MD (ePoster Presenter) • OMEGA: Other Financial or Material Support No Relevant Financial Relationships • Wolters Kluwer Health – Lippincott Williams & Wilkins: Royalties, Financial or Material Support from Publishers Constantine Demetracopoulos, MD (Co-Author, • Springer: Royalties, Financial or Material Support from Moderator) Publishers • Exactech Inc.: Speaker’s Bureau/Presenter, Paid • Saunders/Mosby-Elsevier: Royalties, Financial or Material Consultant Support from Publishers • Stryker: Speaker’s Bureau/Presenter, Paid Consultant • S4Carlisle Publishing: Royalties, Financial or Material • Wright Medical Group N.V.: Speaker’s Bureau/Presenter, Support from Publishers Paid Consultant • Foot and Ankle International: Medical/Orthopaedic • Integra LifeSciences: Speaker’s Bureau/Presenter, Paid publications editorial/governing board Consultant, Research Support • Foot and Ankle Orthopaedics: Medical/Orthopaedic • RTI: Paid Consultant publications editorial/governing board • Royal Biologics: Paid Consultant • Techniques in Orthopaedics: Medical/Orthopaedic publications editorial/governing board Bryan Den Hartog, MD (Moderator) • American Orthopaedic Foot and Ankle Society: Board • Biomedical Enterprises: Royalties member/committee appointments for a society • DePuy A Johnson & Johnson Company: Royalties, Speaker’s Bureau/Presenter, Paid Consultant John DiPreta, MD (Moderator) • Wright Medical Group N.V.: Royalties, Speaker’s No Relevant Financial Relationships Bureau/Presenter, Paid Consultant • Bio2 Technologies: Paid Consultant, Stock or Stock Mark Drakos, MD (Co-Author, Presenter, Options ePoster Presenter) • Integra: Paid Consultant • Extremity Medical: Royalties • CrossRoads Extremity Systems: Stock or Stock Options • Fast Form: Paid Consultant • FootInnovate.com: Stock or Stock Options, Other • Pitusan 360: Paid Consultant Financial or Material Support, Royalties, Financial or Material Support from Publishers Naven Duggal, MD (ePoster Presenter) • American Orthopaedic Foot and Ankle Society: Board • Orthopedics: Medical/Orthopaedic publications member/committee appointments for a society editorial/governing board • Techniques in Foot and Ankle Surgery: Medical/ Sunil Dhar, MBBS, MS, MCh (Co-Author, ePoster Orthopaedic publications editorial/governing board Presenter) • Wright Medical Group N.V.: Royalties, Speaker’s Bureau/ Mark Easley, MD (Presenter) Presenter, Paid Consultant, Research Support • Exactech Inc.: Royalties, Paid Consultant, Research Support Claudia Di Silvestri, MD (ePoster Presenter) • Wolters Kluwer Health – Lippincott Williams & Wilkins: No Relevant Financial Relationships Royalties, Financial or Material Support from Publishers • Elsevier: Royalties, Financial or Material Support Aseel Dib, BS (ePoster Presenter) from Publishers No Relevant Financial Relationships • IFFAS: Board member/committee appointments for a society Kevin Dibbern, PhD (Presenter) No Relevant Financial Relationships Benjamin Ebben, MD (Presenter) No Relevant Financial Relationships Christopher DiGiovanni, MD (Planner, Moderator, Presenter) Patrick Ebeling, MD (Planner) • Extremity Medical: Royalties, Stock or Stock Options, • Orthosolutions: Royalties, Paid Consultant Other Financial or Material Support • Integra: Paid Consultant • Wright Medical Group N.V.: Paid Consultant, Stock or • Foot & Ankle Orthopaedics: Medical/Orthopaedic Stock Options, Other Financial or Material Support publications editorial/governing board • Osso VR: Unpaid Consultant, Stock or Stock Options • AAOS: Board member/committee appointments for a • CreOsso: Unpaid Consultant, Stock or Stock Options society • ROM3 Rehab: Unpaid Consultant, Stock or Stock Options • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society

62 Stephanie Eble (Co-Author) Jorge Filippi, MD, MBA (Co-Author, Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Hani El-Mowafi (ePoster Presenter) Fred Finney, MD (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Andrew Elliott (Co-Author) Ashlyn Fitch (Co-Author) • Xtant Medical: Stock or Stock Options No Relevant Financial Relationships

Scott Ellis, MD (Planner, Co-Author, Presenter) Amanda Fletcher, MD (Presenter, ePoster Presenter) • Paragon28: Speaker’s Bureau/Presenter, Paid Consultant No Relevant Financial Relationships • Wright Medical Group N.V.: Speaker’s Bureau/Presenter, Paid Consultant Ian Foran, MD (Presenter, ePoster Presenter) • Foot and Ankle International: Medical/Orthopaedic No Relevant Financial Relationships publications editorial/governing board • Foot and Ankle Orthopaedics: Medical/Orthopaedic Samuel Ford, MD (Presenter) publications editorial/governing board No Relevant Financial Relationships • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society Paul Fortin, MD (Presenter) No Relevant Financial Relationships Adam Eudy, DO (ePoster Presenter) No Relevant Financial Relationships Austin Fragomen (Presenter) • Synthes: Speaker’s Bureau/Presenter, Paid Consultant Omolola Fakunle (Co-Author) • Nuvasive: Speaker’s Bureau/Presenter, Paid Consultant No Relevant Financial Relationships • Smith & Nephew: Speaker’s Bureau/Presenter, Paid Consultant Alessandra Falk, MD (ePoster Presenter) • Limb Lengthening Research Society: Board No Relevant Financial Relationships member/committee appointments for a society

Ashraf Fansa, MBBCh (Co-Author) Brianna Fram, MD (Presenter, ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Amanda Fantry, MD (Moderator, Presenter) Tyler Fraser, MD (ePoster Presenter) • American Orthopaedic Foot and Ankle Society: Board No Relevant Financial Relationships member/committee appointments for a society Christina Freibott, BA (Co-Author) Daniel Farber, MD (Presenter) No Relevant Financial Relationships • Treace Medical: Speaker’s Bureau/Presenter, Paid Consultant, Research Support Will Freking (Presenter) • DJ Orthopaedics: Research Support No Relevant Financial Relationships • Wright Medical Group N.V.: Other Financial or Material Support Alena Frey (Staff) • Arthrex Inc: Other Financial or Material Support No Relevant Financial Relationships • AAOS: Board member/committee appointments for a society Daniel Fuchs, MD (Co-Author) • American Orthopaedic Foot and Ankle Society: Board No Relevant Financial Relationships member/committee appointments for a society • Pennsylvania Orthopaedic Society: Board Brian Gallagher, MD (Presenter, ePoster Presenter) member/committee appointments for a society • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society Vincent Federico (Presenter) No Relevant Financial Relationships Sara Galli, MD (Presenter) • American Orthopaedic Foot and Ankle Society: Board Shi-Ming Feng, MD (Presenter, ePoster Presenter) member/committee appointments for a society • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society Robert Gallivan, BSE (ePoster Presenter) No Relevant Financial Relationships Gabriel Ferraz, MD (Presenter, ePoster Presenter) No Relevant Financial Relationships Burke Gao, MD (ePoster Presenter) No Relevant Financial Relationships

63 DISCLOSURES

David Garras, MD (Planner) Aaron Guyer, MD (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Tara Gaston, DO (ePoster Presenter) Steven Haddad, MD (Moderator, Presenter) No Relevant Financial Relationships • Wright Medical Group N.V.: Royalties, Paid Consultant • Tornier: Stock or Stock Options Taggart Gauvain, MD (Moderator) • Orthopedic Learning Center: Board member/committee No Relevant Financial Relationships appointments for a society

Susan Ge, MD (Co-Author, Presenter) Noortje Hagemeijer, MD (Presenter, ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Philip Ghobrial, BS (Presenter) Anil Haldar (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Arianna Gianakos, DO (ePoster Presenter) Jared Halstrom, BS (ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Rahul Goel (Co-Author, ePoster Presenter) Edward Haupt, MD (Presenter) This individual reported nothing to disclose No Relevant Financial Relationships

Eric Gokcen, MD (Presenter, ePoster Presenter) Jensen Henry, MD (Presenter) • American Orthopaedic Foot and Ankle Society: Board No Relevant Financial Relationships member/committee appointments for a society Leah Herzog, MD (Presenter, ePoster Presenter) Jonathan Goodloe (ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships Naohiro Hio, MD, PhD (ePoster Presenter) Tonio Gottlieb (ePoster Presenter) • The Japanese Society for Surgery of the Foot: Board No Relevant Financial Relationships member/committee appointments for a society

David Goyette (ePoster Presenter) Jeffrey Hoffman (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Michael Greaser, MD (Moderator) MaCalus Hogan, MD (Moderator) No Relevant Financial Relationships No Relevant Financial Relationships

Christopher Gross, MD (Presenter, ePoster Presenter) Amanda Holleran, MD (Presenter) • Wright Medical Group N.V.: Research Support No Relevant Financial Relationships • Medshape, Additive: Other Financial or Material Support George Holmes, MD (Co-Author) Adam Groth, MD (Co-Author) No Relevant Financial Relationships This individual reported nothing to disclose James Holmes, MD (Moderator, Presenter) Benjamin Guiloff (ePoster Presenter) • Foot and Ankle International: Medical/Orthopaedic No Relevant Financial Relationships publications editorial/governing board • American Orthopaedic Foot and Ankle Society: Board Yi Guo (Co-Author) member/committee appointments for a society This individual reported nothing to disclose Zhao Hong-Mou, MD, PhD (Presenter, Daniel Guss, MD, MBA (Presenter) ePoster Presenter) • Arthrex Inc: Research Support No Relevant Financial Relationships • Butterfly: Research Support • Orthoscan: Research Support Tyler Hoskins (ePoster Presenter) • Wright Medical Group N.V.: Research Support No Relevant Financial Relationships • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society Jeff Houck, PhD (Co-Author) • American Physical Therapy Association: Board Natalia Gutteck, MD (ePoster Presenter) member/committee appointments for a society No Relevant Financial Relationships

64 Joseph Hsu (Presenter) Todd Irwin, MD (Moderator) • Smith & Nephew: Royalties, Speaker’s Bureau/Presenter • Medline: Paid Consultant • Globus Medical: Royalties, Paid Consultant • Paragon28: Paid Consultant • Orthopaedic Trauma Association: Board • Wright Medical Group N.V.: Paid Consultant member/committee appointments for a society • Saunders/Mosby-Elsevier: Royalties, Financial or Material Support from Publishers Daniel Hu (Presenter) • American Orthopaedic Foot and Ankle Society: Board No Relevant Financial Relationships member/committee appointments for a society

Casey Humbyrd, MD (Moderator) J. Benjamin Jackson, MD (ePoster Presenter) • Oxford University Press: Royalties, Financial or Material • AAOS: Board member/committee appointments for Support from Publishers a society • American Orthopaedic Foot and Ankle Society: Board • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society member/committee appointments for a society • AAOS: Board member/committee appointments for • South Carolina Orthopaedic Association: Board member/ a society committee appointments for a society

James Hunker (Co-Author) Chul-Young Jang (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Kenneth Hunt, MD (Presenter) Katherine Jensen, MS, MPH (ePoster Presenter) • Paragon28: Paid Consultant No Relevant Financial Relationships • Panther Orthopaedics: Stock or Stock Options • Arthrex Inc: Other Financial or Material Support William Johns (Presenter) • Journal of ISAKOS: Medical/Orthopaedic publications No Relevant Financial Relationships editorial/governing board • American Orthopaedic Foot and Ankle Society: Board A. Holly Johnson, MD (Planner, Co-Author, Presenter) member/committee appointments for a society • Novastep: Royalties, Paid Consultant • International Soc of Arthroscopy, Knee Surg, Ortho • Carbon22: Stock or Stock Options Sports Med: Board member/committee appointments • Altier Trauma: Stock or Stock Options for a society • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society Edward Hur (Co-Author) • AOFAMIS: Board member/committee appointments for This individual reported nothing to disclose a society Eoghan Hurley, MBBCh, BAO (Presenter, ePoster Presenter) No Relevant Financial Relationships Jeffrey Johnson, MD (Presenter) • Wright Medical Group N.V.: Royalties Syed Hussaini, MD (Presenter, ePoster Presenter) • Arthrex Inc: Speaker’s Bureau/Presenter, Paid Consultant No Relevant Financial Relationships • CrossRoads Medical: Stock or Stock Options • Extremity Development Company: Stock or Stock Options Il-ung Hwang (Co-Author) • Foot and Ankle International: Medical/Orthopaedic No Relevant Financial Relationships publications editorial/governing board • American Orthopaedic Foot and Ankle Society: Board Kelly Hynes, MD (Presenter) member/committee appointments for a society • Acumed LLC: Paid Consultant, Royalties, Speaker’s Bureau/Presenter Michael Johnson, MD (Planner, Co-Author) • American Orthopaedic Foot and Ankle Society: Board • in2bones: Paid Consultant member/committee appointments for a society • ODI: Paid Consultant • Canadian Orthopaedic Foot and Ankle Society: Board • Small Bone Innovations: Research Support member/committee appointments for a society • Alabama Orthopaedic Society: Board member/committee appointments for a society Yasunari Ikuta (ePoster Presenter) No Relevant Financial Relationships Benjamin Jong, MD (ePoster Presenter) • Arthrex Inc: Other Financial or Material Support Muhammed Iqbal (ePoster Presenter) No Relevant Financial Relationships

65 DISCLOSURES

Hong-Geun Jung, MD (Planner) Dae-Yoo Kim (Co-Author) • Jeil Medical: Paid Consultant No Relevant Financial Relationships • SK Chemical: Research Support • Springer: Royalties, Financial or Material Support Jaeyoung Kim, MD (Presenter, ePoster Presenter) from Publishers No Relevant Financial Relationships • Korean Foot and Ankle Society: Board member/committee appointments for a society Jongkil Kim, MD (Co-Author) • Korean Orthopedic Association: Board No Relevant Financial Relationships member/committee appointments for a society • Korean Society of Sports Medicine: Board Jun-Beom Kim, MD (ePoster Presenter) member/committee appointments for a society No Relevant Financial Relationships • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society Morgan Kim (Presenter) No Relevant Financial Relationships Anish Kadakia, MD (Co-Author, Moderator, Presenter) • Acumed LLC: Royalties Sung-Jae Kim, MD, PhD. (Presenter, ePoster Presenter) • DePuy A Johnson & Johnson Company: Royalties No Relevant Financial Relationships • Arthrex Inc: Speaker’s Bureau/Presenter, Paid Consultant • Wolters Kluwer Health – Lippincott Williams & Wilkins: Seiji Kimura, MD (ePoster Presenter) Royalties, Financial or Material Support from Publishers No Relevant Financial Relationships • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society Jesse King, BSc (Presenter, ePoster Presenter) No Relevant Financial Relationships Rishin Kadakia, MD (Presenter) No Relevant Financial Relationships Kevin Kirk, DO (Presenter) • Radius Pharmaceuticals: Speaker’s Bureau/Presenter Mani Kahn (Co-Author) • American Orthopaedic Foot and Ankle Society: Board This individual reported nothing to disclose member/committee appointments for a society • American Orthopaedic Association: Board member/ Philip Kaiser, MD (ePoster Presenter) committee appointments for a society No Relevant Financial Relationships Harold Kitaoka, MD (Planner, Moderator) Ho Won Kang (Co-Author) No Relevant Financial Relationships No Relevant Financial Relationships Sandra Klein, MD (Planner, Presenter) Shahin Kayum, MD, MRCS (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships Jessica Kohring, MD (ePoster Presenter) Marcey Keefer Hutchison, DPT (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships Zachary Koroneos (Presenter) Patrick Kellam (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships Fabian Krause, MD (Presenter) Meghan Kelly, MD, PhD (ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships Timothy Kreulen, MD (Co-Author) John Kennedy, MD, FRCS(Orth) (Co-Author) This individual reported nothing to disclose • Arteriocyte Medical Systems, Inc.: Paid Consultant • International Society for Cartilage Repair of the Ankle: Chaiyaporn Kulsakdinun, MD (Co-Author) Board member/committee appointments for a society No Relevant Financial Relationships

Irfan Khan (Co-Author) Robert Kulwin, MD (Presenter, ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Ansab Khwaja, MD (Presenter, ePoster Presenter) Manickam Kumaravel (Presenter) • American Orthopaedic Foot and Ankle Society: Board No Relevant Financial Relationships member/committee appointments for a society

66 John Kwon, MD (Moderator) Sung Hyun Lee, MD (Presenter, ePoster Presenter) • Paragon28: Royalties, Paid Consultant No Relevant Financial Relationships • Trimed: Royalties • Medline: Royalties, Paid Consultant Wonyong Lee, MD (Presenter) • Medshape: Paid Consultant No Relevant Financial Relationships • Restor3D: Paid Consultant David Levine, MD (Co-Author, Presenter) Min Gyu Kyung (Co-Author) No Relevant Financial Relationships No Relevant Financial Relationships Thomas Lewis (Co-Author, Presenter, Dukens LaBaze, BS (ePoster Presenter) ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Sameh Labib, MD (Co-Author, Presenter) Richard Lewis (Presenter) • Arthrex Inc: Paid Consultant • CSL Behring; Speaker’s Bureau/Presenter, • Conformis Inc.: Stock or Stock Options Paid Consultant • Journal of Arthroscopy and related research: Medical/ • Pharnext: Paid Consultant Orthopaedic publications editorial/governing board • Sanofi: Paid Consultant • Eastern Orthopedic Association: Medical/Orthopaedic • Argenx: Paid Consultant publications editorial/governing board • UCB: Paid Consultant • Eastern Orthopedic Association: Board member/ • Pfizer: Paid Consultant committee appointments for a society • Momenta: Paid Consultant • Up to Date: Royalties, Financial or Material Support Peter Lam, MBBS, FAOrthA, FRACS(Orth) from Publishers (Co-Author, Presenter) • Journal of Neurological Sciences: Medical/Orthopaedic • Novastep: Royalties, Paid Consultant publications editorial/governing board • Journal of Neuromuscular Diseases: Medical/Orthopaedic L. Daniel Latt, MD, PhD (Presenter) publications editorial/governing board • Medshape: Paid Consultant, Stock or Stock Options • Peripheral Nerve Society- President Elect: Board • Paragon28: Research Support member/committee appointments for a society • Extremity Medical: Other Financial or Material Support • AJSM, OJSM, FAI, FAO: Medical/Orthopaedic Shuyuan Li, MD, PhD (Presenter) publications editorial/governing board • Foot and Ankle Orthopaedics: Medical/Orthopaedic • American Orthopaedic Foot and Ankle Society: Board publications editorial/governing board member/committee appointments for a society Jiang An Lim (ePoster Presenter) Brian Lau, MD (Presenter) No Relevant Financial Relationships • Research Support • American Orthopaedic Society for Sports Medicine: Jung-Won Lim, MD (Presenter) Board member/committee appointments for a society No Relevant Financial Relationships • Arthroscopy Association of North America: Board member/committee appointments for a society Benjamin Lindsey, MD (Presenter) No Relevant Financial Relationships Jason Lauf (Presenter) No Relevant Financial Relationships Francois Lintz, MD (Presenter) • Newclip Technics: Royalties, Speaker’s Bureau/Presenter, Dong Yeon Lee, MD, PhD (Co-Author) Other Financial or Material Support • Korean Foot and Ankle Society: Board member/ • Curvebeam: Royalties, Speaker’s Bureau/Presenter, Stock committee appointments for a society or Stock Options, Research Support, Other Financial or Material Support Gi-Soo Lee, MD (ePoster Presenter) • European Federation of National Assoc of Ortho and No Relevant Financial Relationships Trauma: Board member/committee appointments for a society Hong Lee, MD (ePoster Presenter) • AFCP (French F&A Society): Board member/committee No Relevant Financial Relationships appointments for a society • International Weight Bearing CT Society: Board Jaehyung Lee (Co-Author, ePoster Presenter) member/committee appointments for a society No Relevant Financial Relationships

Kwang-Bok Lee, MD, PhD (Planner, Presenter) No Relevant Financial Relationships

67 DISCLOSURES

George Liu, DPM (Presenter) Wesley Manz (Co-Author, ePoster Presenter) • Orthofix Inc.: Paid Consultant No Relevant Financial Relationships • Gramercy Extremity Orthopaedics: Paid Consultant, Stock or Stock Options Kevin Martin, DO (Presenter, ePoster Presenter) • American College of Foot and Ankle Surgery: Board • Arthrex Inc: Speaker’s Bureau/Presenter, Paid Consultant member/committee appointments for a society • iWALKFree: Speaker’s Bureau/Presenter, Paid Consultant

Austin Looney (Co-Author) Shinohara Masashi (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Pamela Luk, MD (Planner, Moderator) Chelsea Mathews, MD (Presenter) • American Orthopaedic Foot and Ankle Society: Board No Relevant Financial Relationships member/committee appointments for a society • Neurocrine Biosciences Inc: Stock or Stock Options Daniel McCormack (Co-Author) No Relevant Financial Relationships Matthew Lunati (Presenter) No Relevant Financial Relationships Jeremy McCormick (Presenter) • Wright Medical Group N.V.: Royalties, Speaker’s David Macknet, MD (Presenter) Bureau/Presenter, Paid Consultant, Other Financial or No Relevant Financial Relationships Material Support • Arthrex Inc: Speaker’s Bureau/Presenter Aoife MacMahon, BA (Presenter, ePoster Presenter) • Foot and Ankle International: Medical/Orthopaedic No Relevant Financial Relationships publications editorial/governing board • American Orthopaedic Foot and Ankle Society: Board Tyler Madden (Presenter) member/committee appointments for a society No Relevant Financial Relationships William McGarvey, MD (Planner, Moderator, Presenter) Karim Mahmoud Khamis, MBBCh (Co-Author) • Treace Medical: Speaker’s Bureau/Presenter No Relevant Financial Relationships • Wright Medical Group N.V.: Paid Consultant, Paid presenter, or speaker Peter Mangone, MD (Presenter) • Journal of the American Academy of Orthopaedic • Arthrex Inc: Royalties surgeons: Medical/Orthopaedic publications • Wright Medical Group N.V.: Speaker’s Bureau/Presenter, editorial/governing board Paid Consultant • Orthopaedic Knowledge Online Journal: Medical/ • Artelon: Speaker’s Bureau/Presenter, Paid Consultant Orthopaedic publications editorial/governing board • Ziptek, LLC: Speaker’s Bureau/Presenter, Stock or Stock • Techniques in Foot and Ankle Surgery: Medical/ Options, Paid Consultant Orthopaedic publications editorial/governing board • Trice Medical: Paid Consultant • American Orthopaedic Foot and Ankle Society: Board • Osteocentric: Stock or Stock Options, Paid Consultant member/committee appointments for a society • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society Gerald McGwin, PhD (Co-Author) No Relevant Financial Relationships Jitendra Mangwani, MBBS, MS(Orth), FRCS(Tr&Orth) (Presenter, ePoster Presenter) James McWilliam, MD (Moderator, Presenter) • Orthosolutions: Speaker’s Bureau/Presenter, Paid • Arthrex Inc: Royalties, Speaker’s Bureau/Presenter, Consultant Paid Consultant • Journal of Orthopaedics and Trauma (JCOT): Medical/ Orthopaedic publications editorial/governing board Mitesh Mehta, BA (Presenter) • Committee member, BOFAS: Board member/committee • AmgenCo: Stock or Stock Options appointments for a society • Abbvie: Stock or Stock Options • Procter & Gamble: Stock or Stock Options Arthur Manoli, MD (ePoster Presenter) • Teva: Stock or Stock Options No Relevant Financial Relationships Nabil Mehta (ePoster Presenter) Alaa Mansour (ePoster Presenter) This individual reported nothing to disclose No Relevant Financial Relationships Carolyn Meinerz, MD (Presenter) Nacime Mansur, MD (Presenter) No Relevant Financial Relationships • Brazilian Foot and Ankle Society: Board member/ committee appointments for a society Sreenivasulu Metikala, MD (Presenter) No Relevant Financial Relationships

68 Max Michalski, MD (Presenter) • Smith & Nephew: Research Support • Extremity Medical: Paid Consultant • Saunders/Mosby-Elsevier: Royalties, Financial or Material Support from Publishers Joseph Michalski (Co-Author) • Foot and Ankle International: Medical/Orthopaedic No Relevant Financial Relationships publications editorial/governing board • American Orthopaedic Foot and Ankle Society: Board Megan Miles, MD (Co-Author) member/committee appointments for a society No Relevant Financial Relationships Devon Myers (Co-Author) Daniel Miles (ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships Richard Navratil (Co-Author) Christopher Miller, MD, MHS (Presenter, No Relevant Financial Relationships ePoster Presenter) • Arthrex Inc: Speaker’s Bureau/Presenter, Research Rusheel Nayak, BA (Presenter) Support No Relevant Financial Relationships

Sara Lyn Miniaci-Coxhead, MD (Moderator) Cesar de Cesar Netto, MD, PhD (Co-Author, Presenter) • Integra Life Sciences: Paid Consultant • CurveBeam: Speaker’s Bureau/Presenter, • American Orthopaedic Foot and Ankle Society: Board Paid Consultant, Stock or Stock Options member/committee appointments for a society • Ossio: Speaker’s Bureau/Presenter, Paid Consultant • Foot and Ankle International: Medical/Orthopaedic Kush Mody (Presenter) publications editorial/governing board No Relevant Financial Relationships • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society Amr Mohammed (Presenter) • International Weight Bearing CT Society: Board No Relevant Financial Relationships member/committee appointments for a society

Andrew Molloy, MBChB, FRCS(Tr&Orth) (Presenter) Steven Neufeld, MD (Co-Author, Presenter) • Orthosolutions: Speaker’s Bureau/Presenter, Royalties, No Relevant Financial Relationships Paid Consultant • Stryker: Speaker’s Bureau/Presenter Mackenzie Neumaier (ePoster Presenter) • Arthrex Inc: Speaker’s Bureau/Presenter No Relevant Financial Relationships

Kaveh Momenzadeh, MD (Co-Author) Christopher Neville, PhD, PT (Presenter) No Relevant Financial Relationships • OHI Incorporated: Paid Consultant • Quadrant Biosciences Inc: Stock or Stock Options Augusto Cesar Monteiro, MD (Planner) • Academy of Orthopaedic Physical Therapy: Board No Relevant Financial Relationships member/committee appointments for a society

Eduardo Fuentes Morales, MD (Presenter) Danilo Ryuko Nishikawa, MD (Presenter) • Chilean Society of Orthopaedics and Traumatology: • Medartis: Speaker’s Bureau/Presenter, Paid Consultant Board member/committee appointments for a society • Brazilian Association of Surgery of the Foot and Ankle: Board member/committee appointments for a society Thomas Moran (ePoster Presenter) No Relevant Financial Relationships Devon Nixon, MD (Presenter) No Relevant Financial Relationships Conor Mulvin (Co-Author) No Relevant Financial Relationships Naudereh Noori, MD (Presenter) No Relevant Financial Relationships Julie Murkowski (Staff) No Relevant Financial Relationships Andres O’Daly Baquero, MD (Presenter) No Relevant Financial Relationships G. Andrew Murphy, MD (Planner) • Wright Medical Group N.V.: Royalties, Speaker’s Bureau/ Martin O’Malley, MD (Co-Author, Presenter) Presenter, Paid Consultant • Curvebeam: Stock or Stock Options • Allostem: Research Support • Arthrex Inc.: Research Support Joseph O’Neil, MD (Presenter) • Biomimetic: Research Support No Relevant Financial Relationships • Ferring Pharmaceuticals: Research Support

69 DISCLOSURES

Irvin Oh, MD (Moderator, Presenter) Kwang Hwan Park, MD, PhD (ePoster Presenter) • Innomed: Royalties No Relevant Financial Relationships

Kevin Ong (ePoster Presenter) Yoo Jung Park, MD (ePoster Presenter) • Taylor & Francis: Royalties, Financial or Material Support No Relevant Financial Relationships from Publishers • Journal of Arthroplasty: Medical/Orthopaedic publications James Parrish (ePoster Presenter) editorial/governing board No Relevant Financial Relationships

Yoshimasa Ono (ePoster Presenter) Akshar Patel, BS (Co-Author) No Relevant Financial Relationships No Relevant Financial Relationships

Cristian Ortiz, MD (Presenter) Kristel Peacock (ePoster Presenter) • Synthes: Unpaid Consultant This individual reported nothing to disclose • Acumed LLC: Unpaid Consultant, Speaker’s Bureau/ Presenter David Pedowitz, MD, MS (Co-Author, Presenter) • American Orthopaedic Foot and Ankle Society: Board • Integra: Royalties, Research Support member/committee appointments for a society • Zimmer: Royalties, Paid Consultant • International Federation of Foot and Ankle Societies: • Arthrex Inc: Speaker’s Bureau/Presenter, Paid Consultant Board member/committee appointments for a society • Integra: Speaker’s Bureau/Presenter, Paid Consultant • DePuy A Johnson & Johnson Company: Speaker’s • MiRus: Paid Consultant Bureau/Presenter • American Orthopaedic Foot and Ankle Society: Board • Smith & Nephew: Speaker’s Bureau/Presenter member/committee appointments for a society

Tye Ouzounian, MD (Presenter) Manuel Pellegrini, MD (Presenter) • AAOS: Board member/committee appointments for a • Arthrex Inc: Paid Consultant society • Wright Medical Group N.V.: Paid Consultant • American Medical Association: Board member/committee appointments for a society Murray Penner, MD, FRCSC (Co-Author) • California Orthopaedic Association: Board member/ • Wright Medical Group N.V.: Royalties, Speaker’s committee appointments for a society Bureau/Presenter, Paid Consultant • Amniox Medical: Paid Consultant, Research Support Joaquin Palma, MD (Co-Author) • Arthrex Inc: Other Financial or Material Support No Relevant Financial Relationships • Zimmer: Other Financial or Material Support • Springer: Royalties, Financial or Material Support Vinod Panchbhavi, MD (Planner, Presenter) from Publishers • Stryker: Speaker’s Bureau/Presenter, Paid Consultant • Wolters Kluwer Health - Lippincott Williams & Wilkins: Gregory Pereira, MD (ePoster Presenter) Medical/Orthopaedic publications editorial/governing No Relevant Financial Relationships board • American Orthopaedic Foot and Ankle Society: Board Miguel Pereira Filho, MD (ePoster Presenter) member/committee appointments for a society No Relevant Financial Relationships • AAOS: Board member/committee appointments for a society Wesley Peters, BS (ePoster Presenter) No Relevant Financial Relationships Selene Parekh, MD, MBA (Co-Author, Moderator, ePoster Presenter) Glenn Pfeffer, MD (Moderator, Presenter) • Arthrex Inc: Royalties, Paid Consultant • Elsevier: Royalties, Financial or Material Support • Wright Medical Group N.V.: Royalties, Paid Consultant from Publishers • Tyber Medical: Royalties • Acumed LLC: Paid Consultant Huai Phen (Presenter) • Integra: Paid Consultant, Research Support No Relevant Financial Relationships • Additive Orthopaedics: Unpaid Consultant • Zimmer/Biomet: Research Support Phinit Phisitkul, MD (Presenter) • American Orthopaedic Association: Board • Arthrex Inc: Royalties, Speaker’s Bureau/Presenter member/committee appointments for a society • First Ray and Mortise Medical: Stock or Stock Options

Jae Han Park, MD (Presenter) Camilo Piga (ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

70 Charles Pitts, MD (Presenter) Martinus Richter, MD, PhD (Presenter, No Relevant Financial Relationships ePoster Presenter) • Intercus: Royalties, Paid Consultant Mark Plantz (Presenter) • Geistlich: Paid Consultant, Research Support, Royalties, No Relevant Financial Relationships Financial or Material Support from Publishers • Ossio: Paid Consultant Michael Poliner (ePoster Presenter) • Curvebeam: Stock or Stock Options No Relevant Financial Relationships • Foot and Ankle Surgery: Medical/Orthopaedic publications editorial/governing board Hans Polzer, MD (Presenter) • Fuss und Sprunggelenk: Medical/Orthopaedic No Relevant Financial Relationships publications editorial/governing board • International Federation of Foot and Ankle Societies Warongporn Pongpinyopap, MD (Presenter) (IFFAS): Board member/committee appointments for a No Relevant Financial Relationships society • European Foot and Ankle Society (EFAS): Board John Prather, MD (Co-Author, Presenter) member/committee appointments for a society No Relevant Financial Relationships • International WBCT Society: Board member/committee appointments for a society William Probasco, MD, MS (Presenter, • German Orthopeadic Foot and Ankle Society (DAF): ePoster Presenter) Board member/committee appointments for a society No Relevant Financial Relationships James Rizkalla, MD (ePoster Presenter) Carmen Quatman (Co-Author) No Relevant Financial Relationships • NIH: Research Support • Johnson & Johnson: Paid Consultant Kaitlyn Rizzo (ePoster Presenter) No Relevant Financial Relationships Steven Raikin, MD (Co-Author, Presenter) • Zimmer: Research Support Matthew Roberts, MD (Co-Author, Presenter) • Thieme: Royalties, Financial or Material Support from • New York State Society of Orthopedic Surgeons: Board Publishers member/committee appointments for a society

Deepak Ramanathan, MD (Presenter) Peter Robinson (Co-Author, Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Jayasree Ramas Ramaskandhan, MPT, MSc (Presenter) João Rodrigues (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

John Reach Jr., MD (Planner) Ryan Rogero, BS (Presenter, ePoster Presenter) • Oxford: Royalties, Financial or Material Support No Relevant Financial Relationships from Publishers Edward Rojas (Co-Author) Christopher Reb, DO (Co-Author) This individual reported nothing to disclose No Relevant Financial Relationships Andrew Rosenbaum, MD (Moderator) Sudheer Reddy, MD (ePoster Presenter) • Arthrex Inc: Speaker’s Bureau/Presenter, Paid Consultant No Relevant Financial Relationships • Wolters Kluwer Health – Lippincott Williams & Wilkins: Royalties, Financial or Material Support from Publishers Ramsay Refaie, FRCS (T&O), PhD (ePoster Presenter) • Elsevier: Royalties, Financial or Material Support from No Relevant Financial Relationships Publishers

Megan Reilly, MD (Presenter) Bailey Ross, BA (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Joshua Reside (Presenter) Chamnanni Rungprai, MD (Planner, Presenter, No Relevant Financial Relationships ePoster Presenter) • Arthrex Inc: Speaker’s Bureau/Presenter Kyle Richardson, MD (ePoster Presenter) • Carestream: Speaker’s Bureau/Presenter This individual reported nothing to disclose • Thailand Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society

71 DISCLOSURES

Calvin Rushing (Co-Author) Oliver Schipper, MD (Co-Author, Presenter) • Paragon28: Research Support • Novastep: Royalties, Paid Consultant • MEDLINE Foot & Ankle UNITE: Research Support • Medline: Paid Consultant • Extremity Medical LLC.: Research Support • Restor3D: Stock or Stock Options • CurveBEAM: Research Support • American Orthopaedic Foot and Ankle Society: Board • American Podiatric Medical Association: Board member/committee appointments for a society member/committee appointments for a society Daniel Schlatterer, DO (Presenter) Jirawat Saengsin (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships Lew Schon, MD (Presenter) Katherine Sage, DO (Presenter) • Zimmer: Paid Consultant • American Orthopaedic Foot and Ankle Society: Board • Elsevier: Royalties, Financial or Material Support member/committee appointments for a society from Publishers • AAOS: Board member/committee appointments for Hatem Salem-Saqer (Presenter) a society No Relevant Financial Relationships Daniel Scott, MD, MBA (Presenter, ePoster Presenter) Charles Saltzman, MD (Presenter) No Relevant Financial Relationships • Zimmer: Royalties • Wright Medical Group N.V.: Royalties Devon Scott (ePoster Presenter) • Lima: Unpaid Consultant No Relevant Financial Relationships • crossroads,Bio2: Stock or Stock Options • Foot and Ankle International: Medical/Orthopaedic Chinnasamy Senthil Kumar, MBBS, FRCS(Tr&Orth) publications editorial/governing board (ePoster Presenter) • American Board of Orthopaedic Surgery Inc.: Board • Stryker: Paid Consultant member/committee appointments for a society Jeffrey Seybold, MD (Presenter) V. James Sammarco, MD (Presenter) • MedShape: Royalties, Paid Consultant, Stock or • Extremity Medical: Royalties, Speaker’s Stock Options Bureau/Presenter, Paid Consultant, Royalties, • Acumed LLC: Speaker’s Bureau/Presenter, Financial or Material Support from Publishers Paid Consultant • Johnson & Johnson: Speaker’s Bureau/Presenter, • Foot and Ankle Clinics: Medical/Orthopaedic publications Paid Consultant editorial/governing board • Synthes: Speaker’s Bureau/Presenter, Paid Consultant • American Orthopaedic Foot and Ankle Society: Board • Integra: Speaker’s Bureau/Presenter, Paid Consultant member/committee appointments for a society • AAOS Now: Medical/Orthopaedic publications editorial/governing board Rajiv Shah, MS(Orth) (Presenter) • Foot and Ankle International: Medical/Orthopaedic No Relevant Financial Relationships publications editorial/governing board • Journal of the American Academy of Orthopaedic Ashish Shah, MD (Co-Author, Presenter, surgeons: Medical/Orthopaedic publications ePoster Presenter) editorial/governing board No Relevant Financial Relationships

Bruce Sangeorzan, MD (Presenter) Philip Shaheen, MD (Presenter) • Journal of Bone and Joint Surgery - American: Medical/ No Relevant Financial Relationships Orthopaedic publications editorial/governing board Zuhaib Shahid (Presenter, ePoster Presenter) Go Sato (ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships Rachel Shakked, MD (Co-Author, Presenter) Arash Sayari (Co-Author) • Arthrex Inc: Speaker’s Bureau/Presenter No Relevant Financial Relationships Alan Shamrock, MD (Presenter) Sebastian Schilde (ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships Jiangyinzi Shang (Presenter) No Relevant Financial Relationships

72 Akhil Sharma (Presenter, ePoster Presenter) Nelson SooHoo, MD (Presenter) No Relevant Financial Relationships • SLACK Incorporated: Medical/Orthopaedic publications editorial/governing board B. Dale Sharpe, DO (Presenter) • Wolters Kluwer Health - Lippincott Williams & Wilkins: No Relevant Financial Relationships Medical/Orthopaedic publications editorial/governing board Alain Sherman, BA (ePoster Presenter) • American Orthopaedic Foot and Ankle Society: Board No Relevant Financial Relationships member/committee appointments for a society • AAOS: Board member/committee appointments for a Naomi Shields, MD (Presenter) society • Foot and Ankle International: Medical/Orthopaedic publications editorial/governing board Yantarat Sripanich, MD (Presenter, ePoster Presenter) • American Orthopaedic Foot and Ankle Society: Board No Relevant Financial Relationships member/committee appointments for a society Drew Stal, MD (Presenter) Dong Woo Shim, MD (ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships Chris Stauch (Presenter) Yoshiharu Shimozono, MD (Presenter) No Relevant Financial Relationships • Japanese Orthopaedic Society of Knee, Arthroscopy and Sports: Board member/committee appointments for a Jesse Steadman, BS (ePoster Presenter) society No Relevant Financial Relationships

Maksim Shlykov, MD (Presenter) Kelly Stéfani, MD, PhD (Presenter) No Relevant Financial Relationships • Johnson & Johnson: Speaker’s Bureau/Presenter, Paid Consultant Seth Shoap, BA, BS (Co-Author, ePoster Presenter) • Foot and Ankle International: Medical/Orthopaedic No Relevant Financial Relationships publications editorial/governing board • American Orthopaedic Foot and Ankle Society: Board Ademola Shofoluwe, MD (ePoster Presenter) member/committee appointments for a society No Relevant Financial Relationships • Brazilian Foot and Ankle Society: Board member/ committee appointments for a society David Shuster (ePoster Presenter) • Foot and Ankle Orthopaedics: Medical/Orthopaedic No Relevant Financial Relationships publications editorial/governing board • Scientific Journal of the Foot and Ankle: Medical/ Thiago Silva (Presenter, ePoster Presenter) Orthopaedic publications editorial/governing board No Relevant Financial Relationships • Revista Brasileira de Ortopedia: Medical/Orthopaedic publications editorial/governing board Natalie Singer, MD (Presenter) • Revista Técnicas em Ortopedia: Medical/Orthopaedic No Relevant Financial Relationships publications editorial/governing board

Brian Sleasman, MD (ePoster Presenter) Andrew Steffensmeier (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Mark Slovenkai, MD (Presenter) Brian Steginsky, DO (Presenter) • Integra: Speaker’s Bureau/Presenter No Relevant Financial Relationships

Carolyn Sofka, MD, FACR (Moderator, Presenter) Brett Steineman (Presenter) • Lippincott Williams & Wilkins: Royalties, Financial or No Relevant Financial Relationships Material Support from Publishers • OSSIO: Paid Consultant Trenton Stevens, MD (ePoster Presenter) No Relevant Financial Relationships Jaehwang Song, MD (Presenter) No Relevant Financial Relationships Yuki Sugino (ePoster Presenter) No Relevant Financial Relationships

Charles Sutherland (Co-Author) No Relevant Financial Relationships

73 DISCLOSURES

Masanori Taki, MD, PhD (ePoster Presenter) Josh Vander Maten (ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Shay Tenenbaum, MD (ePoster Presenter) Emily Vannatta, BS (Co-Author) No Relevant Financial Relationships No Relevant Financial Relationships

David Thordarson, MD (Planner, Presenter) Nijil Vasukutty, MRCSEd (ePoster Presenter) • Tornier: Royalties No Relevant Financial Relationships • Stryker: Speaker’s Bureau/Presenter • Orthosolutions: Paid Consultant Zachary Vaupel, MD (Co-Author) • Paragon28: Stock or Stock Options, Research Support No Relevant Financial Relationships • Foot and Ankle International: Royalties, Financial or Material Support from Publishers, Medical/Orthopaedic Andrea Veljkovic, MD, MPH, FRCSC (Presenter) publications editorial/governing board This individual reported nothing to disclose • Foot and Ankle Orthopaedics: Medical/Orthopaedic publications editorial/governing board Monika Volesky, MD (Moderator) No Relevant Financial Relationships Yuki Tochigi, MD, PhD (Presenter) • Zimmer: Royalties, Speaker’s Bureau/Presenter, Matthew Vopat, MD (ePoster Presenter) Paid Consultant No Relevant Financial Relationships • Daiichi Sankyo Pharmaceutical Co.: Speaker’s Bureau/Presenter J. Turner Vosseller, MD (Co-Author, Presenter, • Japanese Society for Surgery of the Foot: Board ePoster Presenter) member/committee appointments for a society • New Clip Technics: Royalties • Japanese Orthopaedic Society of Knee, Arthroscopy • Arthrex Inc: Speaker’s Bureau/Presenter and Sports: Board member/committee appointments • Acumed LLC: Research Support for a society • Saunders/Mosby-Elsevier: Royalties, Financial or Material • Japanese Society for Clinical Biomechanics: Board Support from Publishers member/committee appointments for a society • Foot and Ankle Orthopaedics: Medical/Orthopaedic publications editorial/governing board Ichiro Tonogai, MD, PhD (ePoster Presenter) • AAOS: Board member/committee appointments for a No Relevant Financial Relationships society • American Orthopaedic Foot and Ankle Society: Board David Townshend, MBBS, FRCS(Tr&Orth) (Presenter) member/committee appointments for a society • Wright Medical Group N.V.: Speaker’s Bureau/Presenter, Paid Consultant, Research Support Ettore Vulcano, MD (Co-Author, Presenter) • British Orthopaedic Foot and Ankle Society: Board No Relevant Financial Relationships member/committee appointments for a society • Arthrex Inc: Speaker’s Bureau/Presenter Emilio Wagner, MD (Moderator, Presenter) • Paragon28: Royalties, Speaker’s Bureau/Presenter, Justin Tsai, MD (Co-Author) Research Support No Relevant Financial Relationships • Journal of Orthopedic Surgery and Research: Medical/ Orthopaedic publications editorial/governing board Benjamin Umbel, DO (Presenter) • Evidence Based Medicine Committee: Board No Relevant Financial Relationships member/committee appointments for a society

Alicia Unangst, DO (Presenter) Pablo Wagner, MD (Presenter, ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Daniel Urness, BS (ePoster Presenter) Olivia Waldman (Co-Author) No Relevant Financial Relationships No Relevant Financial Relationships

Tomas Urrutia (Presenter) S. Blake Wallace, MD (ePoster Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

Justin Vaida (ePoster Presenter) Kempland Walley, BSc (Presenter) No Relevant Financial Relationships No Relevant Financial Relationships

74 Peiji Wang, MD (ePoster Presenter) Alastair Younger, MBChB, ChM, FRCSC (Presenter) No Relevant Financial Relationships • Stryker: Speaker’s Bureau/Presenter • Wright Medical Group N.V.: Speaker’s Bureau/Presenter, Norman Ward, MD (ePoster Presenter) Paid Consultant, Research Support No Relevant Financial Relationships • Acumed LLC: Paid Consultant • Zimmer: Paid Consultant, Research Support Geoffrey Watsonn, MD (Planner) • Arthrex Inc: Research Support No Relevant Financial Relationships • Amniox: Research Support • Biocomposites: Research Support Neil White (Co-Author) • Axolotyl: Paid Consultant This individual reported nothing to disclose • Saunders/Mosby-Elsevier: Royalties, Financial or Material Support from Publishers Pamela Wible, MD (Presenter) • Foot and Ankle International: Medical/Orthopaedic No Relevant Financial Relationships publications editorial/governing board • Canadian Orthopaedic Association: Medical/Orthopaedic Madeleine Willegger, MD (ePoster Presenter) publications editorial/governing board • Austrian Foot and Ankle Society: Board member/ • American Orthopaedic Foot and Ankle Society: Board committee appointments for a society member/committee appointments for a society • Canadian Orthopaedic Association: Board Joan Williams, MD (Moderator) member/committee appointments for a society No Relevant Financial Relationships • Specialist Society of British Columbia: Board member/committee appointments for a society Caroline Williams, MS (Co-Author) No Relevant Financial Relationships Hui Zhang, MD (Presenter) • American Orthopaedic Foot and Ankle Society: Board Emilie Williamson (ePoster Presenter) member/committee appointments for a society No Relevant Financial Relationships Jianying Zhang, Ph. D. (Presenter) Andrew Wines, MBBS, FRACS(Orth) (Co-Author) No Relevant Financial Relationships • Australian Orthopaedic Association: Board member/ committee appointments for a society John Zhao, MD (Presenter) No Relevant Financial Relationships Mark Wu, MD (Presenter) No Relevant Financial Relationships Jacob Zide, MD (Presenter, ePoster Presenter) • Orthofix Inc.: Paid Consultant Dane Wukich, MD (ePoster Presenter) • AAOS: Board member/committee appointments for a • Arthrex Inc: Royalties society • Orthofix Inc: Paid Consultant • American Orthopaedic Foot and Ankle Society: Board • Wright Medical Group N.V.: Paid Consultant member/committee appointments for a society • Treace: Research Support • Association of Diabetic Foot Surgeons: Board member/ Michael Ziegele (ePoster Presenter) committee appointments for a society This individual reported nothing to disclose

Liang Xiaojun, MD (ePoster Presenter) No Relevant Financial Relationships

Alan Yan, MD (Co-Author) • American Orthopaedic Foot and Ankle Society: Board member/committee appointments for a society

Li Yi, MD (ePoster Presenter) No Relevant Financial Relationships

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