Anterior (Cranial) Cruciate Ligament Rupture
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Synovial Joints Permit Movements of the Skeleton
8 Joints Lecture Presentation by Lori Garrett © 2018 Pearson Education, Inc. Section 1: Joint Structure and Movement Learning Outcomes 8.1 Contrast the major categories of joints, and explain the relationship between structure and function for each category. 8.2 Describe the basic structure of a synovial joint, and describe common accessory structures and their functions. 8.3 Describe how the anatomical and functional properties of synovial joints permit movements of the skeleton. © 2018 Pearson Education, Inc. Section 1: Joint Structure and Movement Learning Outcomes (continued) 8.4 Describe flexion/extension, abduction/ adduction, and circumduction movements of the skeleton. 8.5 Describe rotational and special movements of the skeleton. © 2018 Pearson Education, Inc. Module 8.1: Joints are classified according to structure and movement Joints, or articulations . Locations where two or more bones meet . Only points at which movements of bones can occur • Joints allow mobility while preserving bone strength • Amount of movement allowed is determined by anatomical structure . Categorized • Functionally by amount of motion allowed, or range of motion (ROM) • Structurally by anatomical organization © 2018 Pearson Education, Inc. Module 8.1: Joint classification Functional classification of joints . Synarthrosis (syn-, together + arthrosis, joint) • No movement allowed • Extremely strong . Amphiarthrosis (amphi-, on both sides) • Little movement allowed (more than synarthrosis) • Much stronger than diarthrosis • Articulating bones connected by collagen fibers or cartilage . Diarthrosis (dia-, through) • Freely movable © 2018 Pearson Education, Inc. Module 8.1: Joint classification Structural classification of joints . Fibrous • Suture (sutura, a sewing together) – Synarthrotic joint connected by dense fibrous connective tissue – Located between bones of the skull • Gomphosis (gomphos, bolt) – Synarthrotic joint binding teeth to bony sockets in maxillae and mandible © 2018 Pearson Education, Inc. -
Chapter Nine- Joints and Articulations
Chapter 9 Activity: Joints 1. List the three structural categories of joints and briefly describe the criteria used for structural classification of joints. 2. List the three functional classifications of joints, and briefly describe the basis for the functional classification of joints. 3. Which functional class of joints contains joints that are freely movable? 1. Synarthrosis 2. Amphiarthrosis 3. Diarthrosis a) 1 only c) 3 only e) All of these choices b) 2 only d) Both 2 and 3 4. Which of the following is a type of fibrous joint composed of a thin layer of dense irregular fibrous connective tissue found between the bones of the skull? 1. Syndesmoses 2. Gomphosis 3. Suture a) 1 only c) 3 only e) None of these choices b) 2 only d) Both 1 and 2 5. The epiphyseal plate in a long bone is an example of which type of joint? a) Gomphosis c) Symphysis e) Synchondrosis b) Suture d) Synovial 6. The joint between the first rib and the manubrium of the sternum is classified as a) a synchondrosis. c) a cartilaginous joint. e) None of these choices. b) a synarthrosis. d) All of these choices. 7. Which of the following is(are) made from dense regular connective tissue? a) Ligaments c) Articular fat pads e) Synovial fluid b) Articular cartilage d) Synovial membrane 8. What unique characteristics would a person who is "double-jointed” possess? Answer: 9. Briefly describe the functions of synovial fluid. Answer: 10. Briefly describe what is happening when a person “cracks their knuckles”. Answer: 11. Which of the following structures include the fibular and tibial collateral ligaments of the knee joint? a) Synovial membranes c) Menisci e) Tendon sheath b) Articular fat pads d) Extracapsular ligaments 12. -
Medial Collateral Ligament (MCL) Sprain
INFORMATION FOR PATIENTS Medial collateral ligament (MCL) sprain This leaflet intends to educate you on Knee ligament sprains are graded in the immediate management of your severity from one to three: knee injury. It also contains exercises to prevent stiffening of your knee, Grade one: Mild sprain with ligaments whilst your ligament heals. stretched but not torn. Grade two: Moderate sprain with some What is an MCL injury? ligaments torn. Grade three: Severe sprain with There are two collateral ligaments, one complete tear of ligaments. either side of the knee, which act to stop side to side movement of the knee. The Symptoms you may experience medial collateral ligament (MCL) is most commonly injured. It lies on the inner side Pain in the knee, especially on the of your knee joint, connecting your thigh inside, particularly with twisting bone (femur) to your shin bone (tibia) and movements. provides stability to the knee. Tenderness along the ligament on the inside. Injuries to this ligament tend to occur Stiffness. when a person is bearing weight and the Swelling and some bruising. knee is forced inwards, such as slipping depending on the grade of the injury. on ice or playing sports, e.g. skiing, You may have the feeling the knee will football and rugby. In older people, this give way or some unstable feeling can be injured during a fall. An MCL injury can be a partial or complete tear, or overstretching of the ligament. Knee ligament injuries are also referred to as sprains. It’s common to injure one of your cruciate ligaments (the two ligaments that cross in the middle of your knee which help to stabilise), or your meniscus (cartilage discs that help provide a cushion between your thigh and shin bone), at the same time as your MCL. -
About Your Knee
OrthoInfo Basics About Your Knee What are the parts of the knee? Your knee is Your knee is made up of four main things: bones, cartilage, ligaments, the largest joint and tendons. in your body Bones. Three bones meet to form your knee joint: your thighbone and one of the (femur), shinbone (tibia), and kneecap (patella). Your patella sits in most complex. front of the joint and provides some protection. It is also vital Articular cartilage. The ends of your thighbone and shinbone are covered with articular cartilage. This slippery substance to movement. helps your knee bones glide smoothly across each other as you bend or straighten your leg. Because you use it so Two wedge-shaped pieces of meniscal cartilage act as much, it is vulnerable to Meniscus. “shock absorbers” between your thighbone and shinbone. Different injury. Because it is made from articular cartilage, the meniscus is tough and rubbery to help up of so many parts, cushion and stabilize the joint. When people talk about torn cartilage many different things in the knee, they are usually referring to torn meniscus. can go wrong. Knee pain or injury Femur is one of the most (thighbone) common reasons people Patella (kneecap) see their doctors. Most knee problems can be prevented or treated with simple measures, such as exercise or Articular cartilage training programs. Other problems require surgery Meniscus to correct. Tibia (shinbone) 1 OrthoInfo Basics — About Your Knee What are ligaments and tendons? Ligaments and tendons connect your thighbone Collateral ligaments. These are found on to the bones in your lower leg. -
Joints Classification of Joints
Joints Classification of Joints . Functional classification (Focuses on amount of movement) . Synarthroses (immovable joints) . Amphiarthroses (slightly movable joints) . Diarthroses (freely movable joints) . Structural classification (Based on the material binding them and presence or absence of a joint cavity) . Fibrous mostly synarthroses . Cartilagenous mostly amphiarthroses . Synovial diarthroses Table of Joint Types Functional across Synarthroses Amphiarthroses Diarthroses (immovable joints) (some movement) (freely movable) Structural down Bony Fusion Synostosis (frontal=metopic suture; epiphyseal lines) Fibrous Suture (skull only) Syndesmoses Syndesmoses -fibrous tissue is -ligaments only -ligament longer continuous with between bones; here, (example: radioulnar periosteum short so some but not interosseous a lot of movement membrane) (example: tib-fib Gomphoses (teeth) ligament) -ligament is periodontal ligament Cartilagenous Synchondroses Sympheses (bone united by -hyaline cartilage -fibrocartilage cartilage only) (examples: (examples: between manubrium-C1, discs, pubic epiphyseal plates) symphesis Synovial Are all diarthrotic Fibrous joints . Bones connected by fibrous tissue: dense regular connective tissue . No joint cavity . Slightly immovable or not at all . Types . Sutures . Syndesmoses . Gomphoses Sutures . Only between bones of skull . Fibrous tissue continuous with periosteum . Ossify and fuse in middle age: now technically called “synostoses”= bony junctions Syndesmoses . In Greek: “ligament” . Bones connected by ligaments only . Amount of movement depends on length of the fibers: longer than in sutures Gomphoses . Is a “peg-in-socket” . Only example is tooth with its socket . Ligament is a short periodontal ligament Cartilagenous joints . Articulating bones united by cartilage . Lack a joint cavity . Not highly movable . Two types . Synchondroses (singular: synchondrosis) . Sympheses (singular: symphesis) Synchondroses . Literally: “junction of cartilage” . Hyaline cartilage unites the bones . Immovable (synarthroses) . -
The Ligament Anatomy of the Deltoid Complex of the Ankle: a Qualitative and Quantitative Anatomical Study
e62(1) COPYRIGHT Ó 2014 BY THE JOURNAL OF BONE AND JOINT SURGERY,INCORPORATED The Ligament Anatomy of the Deltoid Complex of the Ankle: A Qualitative and Quantitative Anatomical Study Kevin J. Campbell, BS, Max P. Michalski, MSc, Katharine J. Wilson, MSc, Mary T. Goldsmith, MS, Coen A. Wijdicks, PhD, Robert F. LaPrade, PhD, MD, and Thomas O. Clanton, MD Investigation performed at the Department of Biomedical Engineering, Steadman Philippon Research Institute, and the Steadman Clinic, Vail, Colorado Background: The deltoid ligament has both superficial and deep layers and consists of up to six ligamentous bands. The prevalence of the individual bands is variable, and no consensus as to which bands are constant or variable exists. Although other studies have looked at the variance in the deltoid anatomy, none have quantified the distance to relevant osseous landmarks. Methods: The deltoid ligaments from fourteen non-paired, fresh-frozen cadaveric specimens were isolated and the ligamentous bands were identified. The lengths, footprint areas, orientations, and distances from relevant osseous landmarks were measured with a three-dimensional coordinate measurement device. Results: In all specimens, the tibionavicular, tibiospring, and deep posterior tibiotalar ligaments were identified. Three additional bands were variable in our specimen cohort: the tibiocalcaneal, superficial posterior tibiotalar, and deep anterior tibiotalar ligaments. The deep posterior tibiotalar ligament was the largest band of the deltoid ligament. The origins from the distal center of the intercollicular groove were 16.1 mm (95% confidence interval, 14.7 to 17.5 mm) for the tibionavicular ligament, 13.1 mm (95% confidence interval, 11.1 to 15.1 mm) for the tibiospring ligament, and 7.6 mm (95% confidence interval, 6.7 to 8.5 mm) for the deep posterior tibiotalar ligament. -
CRANIAL CRUCIATE LIGAMENT RUPTURE Anatomy There Are Two Cruciate Ligaments in the Canine Stifle (Knee) Joint, the Cranial and Th
Robert H. Galloway, D.V.M Teresa Millar, D.V.M 7020 Francis Road, Suite 100 Richmond, BC V6Y 1A2 (604) 274-9938 www.stevestonvethospital.com CRANIAL CRUCIATE LIGAMENT RUPTURE Anatomy There are two cruciate ligaments in the canine stifle (knee) joint, the cranial and the caudal ligaments. In human knees, they are known as the ACL and PCL. The cranial cruciate ligament is the one most commonly injured in dogs resulting in discomfort and stifle instability with subsequent arthritis. Two cartilage pads called menisci are found within each knee. Femur FEMUR Patella Fabella CCL Meniscus Lateral Patellar Ligament Collateral Ligament Tibial Slope Tibia Photo credit: dfwvetsurgeons.com Why did the ligament rupture? We do not fully understand the cause of cranial cruciate ligament rupture in dogs but we do know that most cases are a result of slowly progressive cranial cruciate ligament (CrCL) degeneration. A genetic cause is being researched and there is considerable support for this belief. Once weakened, the ligament can then rupture with minimal trauma. Dogs that rupture the cruciate ligament in one stifle are at an increased risk of rupturing the ligament in the other stifle (at least a 50% chance). © 2015 – Steveston Veterinary Hospital Clinical Signs Lameness is the most common symptom seen with CrCL rupture and can range from mild intermittent lameness with mild partial ligament tears to non-weight bearing lameness with complete tears and co-existent meniscal damage. Diagnosis The CrCL rupture is diagnosed by palpation (feeling the knee) and eliciting drawer motion or laxity within the joint. Dogs with mild ligament tears and those who are very tense may require sedation. -
Rehabilitation Guidelines for Knee Multi-Ligament Repair/Reconstruction
UW HEALTH SPORTS REHABILITATION Rehabilitation Guidelines for Knee Multi-Ligament Repair/Reconstruction The knee joint is comprised of an A B articulation of three bones: the femur Medial (thigh bone), tibia (shin bone), Collateral Ligament Lateral and patella (knee cap). The femur (MCL) Collateral has a medial (inside) and a lateral Ligament (outside) condyle that forms a radial (LCL) or rounded bottom that comes together, forming a trochlear groove for the patella to move. The medial and lateral condyle sit on top of the Fat LM Fat Pad tibia, which has a flat surface called Pad MM the tibial plateau. The knee also is comprised of two Fibula menisci, which are fibro-cartilaginous structures and each meniscus Figure 1 a: Medial or inner view of the knee showing the medial collateral ligament, is thinner towards the center of b: Lateral or outer view of the knee showing the lateral collateral ligament. the knee and thicker toward the Image property of Primal Pictures, Ltd., primalpictures.com. Use of this image without authorization from Primal Pictures, Ltd. is prohibited. periphery of the knee, giving it a wedge-shaped appearance. The Femur medial meniscus forms a “c” shape and is located between the medial ACL femoral condyle and the medial ACL LCL aspect of the tibia. The lateral meniscus forms an oval shape and is PCL located between the lateral femoral condyle and the lateral aspect of the MM LM tibia. The menisci act to improve stability between the tibia and the Menisci MCL Tibia femur secondary to its wedge shape that acts to limit translation. -
Nomina Histologica Veterinaria, First Edition
NOMINA HISTOLOGICA VETERINARIA Submitted by the International Committee on Veterinary Histological Nomenclature (ICVHN) to the World Association of Veterinary Anatomists Published on the website of the World Association of Veterinary Anatomists www.wava-amav.org 2017 CONTENTS Introduction i Principles of term construction in N.H.V. iii Cytologia – Cytology 1 Textus epithelialis – Epithelial tissue 10 Textus connectivus – Connective tissue 13 Sanguis et Lympha – Blood and Lymph 17 Textus muscularis – Muscle tissue 19 Textus nervosus – Nerve tissue 20 Splanchnologia – Viscera 23 Systema digestorium – Digestive system 24 Systema respiratorium – Respiratory system 32 Systema urinarium – Urinary system 35 Organa genitalia masculina – Male genital system 38 Organa genitalia feminina – Female genital system 42 Systema endocrinum – Endocrine system 45 Systema cardiovasculare et lymphaticum [Angiologia] – Cardiovascular and lymphatic system 47 Systema nervosum – Nervous system 52 Receptores sensorii et Organa sensuum – Sensory receptors and Sense organs 58 Integumentum – Integument 64 INTRODUCTION The preparations leading to the publication of the present first edition of the Nomina Histologica Veterinaria has a long history spanning more than 50 years. Under the auspices of the World Association of Veterinary Anatomists (W.A.V.A.), the International Committee on Veterinary Anatomical Nomenclature (I.C.V.A.N.) appointed in Giessen, 1965, a Subcommittee on Histology and Embryology which started a working relation with the Subcommittee on Histology of the former International Anatomical Nomenclature Committee. In Mexico City, 1971, this Subcommittee presented a document entitled Nomina Histologica Veterinaria: A Working Draft as a basis for the continued work of the newly-appointed Subcommittee on Histological Nomenclature. This resulted in the editing of the Nomina Histologica Veterinaria: A Working Draft II (Toulouse, 1974), followed by preparations for publication of a Nomina Histologica Veterinaria. -
Posterolateral Corner Knee Injuries: Review of Anatomy and Clinical Evaluation Eric W
REVIEW Posterolateral Corner Knee Injuries: Review of Anatomy and Clinical Evaluation Eric W. Schweller, DO Peter J. Ward, PhD From the Department of The structures in the posterolateral corner of the knee, which stabilize the joint, Osteopathic Internship at are often involved in injuries to the posterior cruciate ligament. Familiar struc- Charleston Area Medical Center in West Virginia tures include the anterior cruciate ligament, posterior cruciate ligament, tibial (Dr Schweller) and the collateral ligament, and menisci. Less familiar are the structures of the postero- Department of Biomedical lateral corner, the most important of which are the fibular collateral ligament, Sciences at West Virginia School of Osteopathic popliteus tendon, and popliteofibular ligament, which resist varus angulation, Medicine in Lewisburg external rotation, or posterior translation of the tibia. Injury to the posterolateral (Dr Ward). corner can be assessed with the posterolateral drawer, dial, reverse pivot shift, Financial Disclosures: external rotation recurvatum, and varus stress tests. The purpose of this review None reported. is to highlight the posterolateral corner of the knee and injuries to its structures Support: None reported. so that physicians can more accurately diagnose these injuries and provide Address correspondence appropriate treatment. Management focuses on restoring the fibular collateral to Peter J. Ward, PhD, Department of Biomedical ligament, popliteofibular ligament, and, in certain cases, the popliteus tendon. Sciences, West Virginia J Am Osteopath Assoc. 2015;115(12):725-731 School of Osteopathic doi:10.7556/jaoa.2015.148 Medicine, 400 N Lee St, Lewisburg, WV 24901-1128. E-mail: pward @osteo.wvsom.edu njuries to the posterolateral corner of the knee have become increasingly studied in Submitted June 3, 2015; orthopedics during the past 10 to 15 years. -
Medial Meniscus Anatomy
Quantitative and Qualitative Assessment of the Posterior Medial Meniscus Anatomy Defining Meniscal Ramp Lesions Nicholas N. DePhillipo,*y MS, ATC, OTC, Gilbert Moatshe,yz§ MD, PhD, Jorge Chahla,z MD, PhD, Zach S. Aman,z BA, Hunter W. Storaci,z MSc, Elizabeth R. Morris,z BA, Colin M. Robbins,z BA, Lars Engebretsen,§ MD, PhD, and Robert F. LaPrade,*k MD, PhD Investigation performed at Steadman Philippon Research Institute, Vail, Colorado, USA Background: Meniscal ramp lesions have been defined as a tear of the peripheral attachment of the posterior horn of the medial meniscus (PHMM) at the meniscocapsular junction or an injury to the meniscotibial attachment. Precise anatomic descriptions of these structures are limited in the current literature. Purpose: To quantitatively and qualitatively describe the PHMM and posteromedial capsule anatomy pertaining to the location of a meniscal ramp lesion with reference to surgically relevant landmarks. Study Design: Descriptive laboratory study. Methods: Fourteen male nonpaired fresh-frozen cadavers were used. The locations of the posteromedial meniscocapsular and meniscotibial attachments were identified. Measurements to surgically relevant landmarks were performed with a coordinate measuring system. To further analyze the posteromedial meniscocapsular and meniscotibial attachments, hematoxylin and eosin and alcian blue staining were conducted on a separate sample of 10 nonpaired specimens. Results: The posterior meniscocapsular attachment had a mean 6 SD length of 20.2 6 6.0 mm and attached posteroinferiorly to the PHMM at a mean depth of 36.4% of the total posterior meniscal height. The posterior meniscotibial ligament attached on the PHMM 16.5 mm posterior and 7.7 mm medial to the center of the posterior medial meniscal root attachment. -
High Ankle Sprains: Diagnosis & Treatment
High Ankle Sprains: Diagnosis & Treatment Mark J. Mendeszoon, DPM, FACFAS, FACFAOM Precision Orthopaedic Specialties University Regional Hospitals Advanced Foot & Ankle Fellowship- Director It Is Only an Ankle Sprain Evaluate Degree of Ecchymosis & Edema If Not Properly Treated Chronic Pain & Ankle Instability Epidemiology Waterman et al. JBJS 2010 states: 2 million ankle sprains per year = 2 billion in health care cost Injury results in time lost and disability in 60% of patients 30% of all sport injury Epidemiology Syndesmotic Injuries: •1% to 18% of all ankle sprains • 32% develop calcification and chronic pain •High incidence of post traumatic arthritis Greater source of impairment than the typical lateral ankle sprain Anatomy Inferior Tibiofibular Joint: defined as a syndesmotic articulation which consists of five separate portions Motion in all three planes Anatomy “Syndesmotic Ligaments: • Anterior Inferior Tibio Fibular Ligament • Posterior Inferior Tibio Fibular Ligament • Transverse Tibio Fibular Ligament • Interosseous Ligament • Interosseous Membrane Deltoid Ligament The deep portion of the deltoid ligament also contributes to syndesmotic stability Acting as a restraint against lateral shift of the talus Biomechanics of Syndesmosis RELEVANT ASPECTS OFANKLE: A considerable clearance takes place between the talus and the distal fibula, which is limited by the tibiofibular syndesmosis With normal stance, almost no twisting and shearing forces act on the ankle joint= static tibfib tension Axial loading tensions AITF and PITF with increase of 10 -17% of body weight intact syndesmosis, the intermalleolar distance increases with dorsiflexion of the talus by 1.0 to 1.25 mm Haraguchi et al. 2009 Intact syndesmosis Fibula ROTATES 2 * externally Equals ~ 2.4 mm distally 0.2-0.4 mm Anterior -posteriorly THUS Fibula moves in 3 D Ogilvie & Harris 1994 Study on Individual Ligaments for Syndesmotic Stability 35% ATIFL 33% TRANSVERSE LIG.