Volume 27 June 2017

The University of Pennsylvania Orthopaedic Journal Volume 27 June 2017 The University of Pennsylvania Orthopaedic Journal Volume 27, June 2017 Editorial Board Editors-in-Chief Blair Ashley, MD Daniel Gittings, MD Faculty Advisors Jaimo Ahn, MD, PhD Samir Mehta, MD Section Editors Matthew Sloan, MD Adnan Cheema, MD Kristin Buterbaugh, MD Mark Hasenauer, MD Zachary Zimmer, MD Michael Eby, MD Joshua Rozell, MD Tyler Morris, MD Andrew Tyler, MD, PhD Luke Lopas, MD Nicole Zelenski, MD Chia Wu, MD, MBA VOLUME 27, JUNE 2017 i The University of Pennsylvania Orthopaedic Journal Volume 27 June 2017 Table of Contents Letter from the Editors in Chief, 2 Blair Ashley, MD, Daniel Gittings, MD Dedication: Malcolm L Ecker, MD 3 Blair Ashley, MD, Daniel Gittings, MD Letter from the Dedicated 4 Malcolm Ecker, MD Clinical Research Arthroplasty Tips & Tricks: The Use of Big Clinical Databases for Orthopaedic Research 7 Matthew Sloan, MD, MS, Neil Sheth, MD Validation of Utilizing a Modern Pedometer as a Measure of Patient Activity 11 Russell Stitzlein, MD, Alexander Neuwirth, MD, Keith Baldwin, MD, MPH, Neil Sheth, MD Evaluation and Treatment of Femoral Osteolysis Following Total Hip Arthroplasty 15 William Hardaker, MS, Daniel Gittings, MD, Jonathan Dattilo, MD, Neil Sheth, MD Preoperative Risk Factor Score Predicts Malnutrition in Total Joint Arthroplasty Patients 18 Sarah Rudasill, Daniel Gittings, MD, Nabil Elkassabany, MD, Jiabin Liu, MD, PhD, Charles Nelson, MD, Atul Kamath, MD Foot & Ankle Tips & Tricks: The Essentials of the Foot and Ankle Physical Examination 21 Adnan Cheema, MD, Kathryn O’Connor, MD Integrating Functional Ultrasonography and Motion Analysis into the Clinical Treatment of Patients with Achilles Tendon Rupture 24 Josh Baxter, PhD, Todd Hullfish, BS, Kathryn O’Connor, MD, Daniel Farber, MD, Keith Wapner, MD, Wen Chao, MD Mechanical and Histological, but not Functional, Properties Remain Inferior in Conservatively Treated Achilles Tendons in Rodents: Long Term Evaluation 27 Benjamin Freedman, PhD, George Fryhofer, MD, Nabeel Salka, BS, Harina Raja, MS, Cody Hillin, MD, Courtney Nuss, Daniel Farber, MD, Louis Soslowsky, PhD Aging Decreases Rat Achilles Tendon Vessel Density and Blood Flow after Injury 30 Corinne Riggin, BS, Susan Schultz, RDMS, Chandra Sehgal, PhD, Louis Soslowsky, PhD Immobilization Angle Effects on Tendon Healing in Achilles Tendon Rupture 32 Cody Hillin, MD, George Fryhofer, MD, Benjamin Freedman, PhD, Daniel Choi, BS, Stephanie Weiss, BS, Louis Soslowsky, PhD Hand Tips & Tricks: Wrist and Hand Radiography 35 Kristin Buterbaugh, MD, Glenn Buterbaugh, MD Ultrasonographic Evaluation of Zone II Flexor Tendon Lacerations and Repairs: a Cadaveric Study 38 Kristin Buterbaugh, MD, Joshua Gordon, MD, Nikolas Kazmers, MD, Viviane Khoury, MD, David Bozentka, MD, David Steinberg, MD Acute Deep Infections of the Upper Extremity: The Utility of Obtaining Atypical Cultures and Factors Associated with Culture Positivity 40 George Fryhofer, MD, Nikolas Kazmers, MD, MSE, Daniel Gittings, MD, David Bozentka, MD, David Steinberg, MD, Benjamin Gray, MD Height-to-length Ratios to Assess Flexion Deformity in Scaphoid Fractures—a Comparison of Measurement Techniques 43 Adnan Cheema, MD, Paul Niziolek, MD, PhD, J. Bruce Kneeland, MD, David Bozentka, MD, David Steinberg, MD Variable-Angle Locking Compression Plate Fixation of Distal Radius Volar Rim 45 Mengcun Chen, MD, Daniel Gittings, MD, Shuhua Yang, MD, Guohui Liu, MD, PhD, Tian Xia, MD, PhD ii UNIVERSITY OF PENNSYLVANIA ORTHOPAEDIC JOURNAL TABLE OF CONTENTS III Pediatrics Tips & Tricks: Management of Posterior Sternoclavicular Joint Injuries 48 Mark Hasenauer, MD, Apurva Shah, MD, MBA, Keith Baldwin, MD, MSPT, MPH, David Spiegel, MD Single Leg Spica Casting for Low Energy Pediatric Femur Fractures—Operative Technique 51 Daniel Miller, MD, Susan Nelson, MD, MPH, Todd Blumberg, MD, Andrew Gambone, MD, Joseph Monteleone Concomitant Injury and Complications Following Pediatric Tibial Spine Fractures 54 Taylor Jackson, BA, Eileen Storey, BA, Theodore Ganley, MD Current Concepts in Management of Unstable Slipped Capital Femoral Epiphysis 58 Brendan Striano, BA, Taylor Jackson, BA, Daniel Miller, MD, Wudbhav Sankar, MD Hip Pain: A Case Report of Diagnosing Femoroacetabular Impingement in an Adolescent Athlete 61 Jermonte Lowe, BS, Julien Aoyama, BA, Nancy Chauvin, MD, Lawrence Wells, MD Medial Epicondyle Fractures in Adolescent Athletes: Two Cases where Conservative Treatment is Surgery 63 Dwayne Carney, BS, Alexander Akoto, BS, Jermonte Lowe, BS, Julien Aoyama, BS, Lawrence Wells, MD Arthroscopic Assisted Reduction of a Salter-Harris Type III Fracture of the Distal Femur with Concomitant Anterior Cruciate Ligament Reconstruction: a Case Report 65 Andrew Gambone, MD, Alexander Akoto, BA, Todd Blumberg, MD, Susan Nelson, MD, MPH, Daniel Miller, MD, Lawrence Wells, MD Mehta Casting for Early Onset Scoliosis—Operative Technique 68 Todd Blumberg, MD, Susan Nelson, MD, MPH, Daniel Miller, MD, Andrew Gambone, MD, Joseph Monteleone, Patrick Cahill, MD Value in Pediatric Orthopaedics 70 Brendan Striano, BA, John Flynn, MS; Edited by Matthew Webb, MD Shoulder & Elbow Preliminary Biomechanical Analysis of Superior Capsular Reconstruction Grafts During Activities of Daily Living 73 Andrea Simi, Matthew Chin, BS, John Kelly IV, MD, Josh Baxter, PhD, Michael Hast, PhD Current Trends in Treatment Options for Glenohumeral Arthritis in the Active Adult 75 Christopher DeFrancesco, BS, Nicole Zelenski, MD, John Kelly IV, MD Supraspinatus Tendons Have Different Mechanical Properties Across Sex 79 Kelsey Robinson, MD, Adam Pardes, BS, Benjamin Freedman, PhD, Louis Soslowsky, PhD Spine Tips & Tricks: Thoracolumbar Injury Anatomy, Biomechanics and Classification 81 Michael Eby, MD Growth Modulation for Idiopathic Scoliosis with an Anterior Tether—Operative Technique 83 Susan Nelson, MD, MPH, Todd Blumberg MD, Andrew Gambone, MD, Daniel Miller, MD, Patrick Cahill, MD Growth Factor and Extracellular Matrix Expression and Localization during Nucleus Pulposus Formation 85 Sun Peck, PhD, Kendra McKee, Neil Malhotra, MD, Brian Harfe, PhD, Lachlan Smith, PhD Novel Techniques for the Evaluation of Physical Activity in a Large Animal Intervertebral Disc Degeneration Model 88 Justin Bendigo, BS, Sarah Gullbrand, PhD, Brendan Stoeckl, MSE, Zosia Zawacki, VMD, Thomas Schaer, VMD, Harvey Smith, MD, Robert L. Mauck, PhD, Neil Malhotra, MD, Feini Qu, BS, Lachlan Smith, PhD Sports Tips & Tricks: Technical Evaluation of ACL Graft Dimensions: Staying out of Trouble 90 Joshua Rozell, MD, Brian Sennett, MD A Surgeon’s Case-Based Guide to the Management of Osteochondritis Dissecans of the Knee in the Pediatric Athlete 93 Scott LaValva, BS, Eileen Storey, BA, James Carey, MD, MPH, Kevin Shea, MD, Eric Wall, MD, Theodore Ganley, MD Anterior Cruciate Ligament Reconstruction in the Adolescent: A Hybrid Approach to Physeal- Respecting Autograft Reconstruction 96 R. Justin Mistovich, MD, Rushyuan Jay Lee, MD, Eileen Storey, BA, Theodore Ganley, MD ACL Reconstruction in Children Using Growth Plate Sparing Techniques 100 Christopher DeFrancesco, BS, Andrew Gambone, MD, Theodore Ganley, MD VOLUME 27, JUNE 2017 IV TABLE OF CONTENTS Trauma Tips & Tricks: Peroneal Nerve Palsy Part II 104 Tyler Morris, MD, Keith Baldwin, MD, MPH, MSPT Single Leg Spica Casting for Low Energy Pediatric Femur Fractures—Operative Technique 106 Daniel Miller, MD, Susan Nelson, MD, MPH, Todd Blumberg, MD, Andrew Gambone, MD, Joseph Monteleone Biomechanical Comparison of Fully-Threaded Solid Cortical versus Partially-Threaded Cannulated Cancellous Screw Fixation for the Treatment of Lisfranc Injuries 109 Joshua Rozell, MD, Matthew Chin, BS, Derek Donegan, MD, Michael Hast, PhD Well-positioned Calcar Screws Have Decreased Variability in Mechanical Loading Compared to More Distant Screws in Proximal Humerus Fracture Fixation 111 Samir Mehta, MD, Matthew Chin, BS, Surena Namdari, MS, MD, Michael Hast, PhD Tumor Tips & Tricks: Prophylactic Femoral Nailing for Metastatic Carcinoma 113 Andrew Tyler, MD, PhD, Kristy Weber, MD Basic Science Bone Rescuing Chondrocyte Hypertrophic Differentiation Potential and Exploring Therapeutic Approaches for Enhancing Bone Formation in Mucopolysaccharidosis VII Dogs 116 Sun Peck, PhD, Jennifer Kang, BS, Justin Bendigo, BS, Patricia O’Donnell, Caitlin Fitzgerald, Jessica Bagel, Neil Malhotra, MD, Eileen Shore, PhD, Margret Casal, DVM, PhD, Lachlan Smith, PhD Reproduction-Induced Changes in Maternal Bone Confer Protective Effects against Estrogen Deficiency 119 Chantal de Bakker, BS, Laurel Leavitt, Casey Krickus, Wei-Ju Tseng, MSE, Tiao Lin, MD, Wei Tong, MD, Ling Qin, PhD, X. Sherry Liu, PhD Relationships Between Peak Bone Microstructure and Rate of Estrogen-Deficiency-Induced Bone Loss 121 Yihan Li, MSE, Wei-Ju Tseng, MSE, Chantal de Bakker, BS, Hongbo Zhao, BS, X. Sherry Liu, PhD Cyclic Treatment Regime Rescues PTH Withdrawal-Induced Bone Loss and Microarchitecture Deterioration 123 Wei-Ju Tseng, MSE, Wonsae Lee, Hongbo Zhao, BS, Yang Liu, DDS, Chantal de Bakker, BS, Yihan Li, MSE, Wei Tong, MD, Luqiang Wang, MD, Xiaoyuan Ma, MD, Ling Qin, PhD, X. Sherry Liu, PhD Cartilage & Meniscus Engineered Endplates Enhance the In Vivo Performance of a Replacement Disc-Like Angle Ply Structure (DAPS), *NIRA AWARD WINNER* 125 Sarah Gullbrand, PhD, John Martin, PhD, Beth Ashinsky, BA, Dong Hwa Kim, PhD, Lachlan Smith, PhD, Dawn Elliott, PhD, Harvey Smith, MD, Robert Mauck, PhD Interposition of a Cell-seeded Slow-Degrading Membrane Generates

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