ORTHO BULLETS Orthopaedic Surgeons & Providers Functionally, the … In this episode, we review the topic of Sternoclavicular Joint from the Shoulder & Elbow section. the deep MCL and posteromedial capsule act as secondary restraints to valgus stress at full knee extension. In this episode, we review the topic of Hip Direct Lateral Approach (Hardinge, Transgluteal) from the Approaches section. 1. Which of the following is true? In this episode, we review the topic of Hip Posterior Approach (Moore or Southern) from the Approaches section. maintains a level pelvis. ORTHO BULLETS Orthopaedic Surgeons & Providers (OBQ12.257) On physical exam, he has a 1A Lachman, and a normal McMurray test. In this episode, we review the topic of Hip Medial Approach from the Approaches section. ORTHO BULLETS Orthopaedic Surgeons & Providers He has pain and 5mm opening on valgus stress at 30 degrees of flexion. His posterior drawer, dial, and varus stress tests are normal. (OBQ10.239) the superficial MCL is the primary stabilizer to valgus stress at all angles, Arthroplasty Preoperative Medical Optimization, Arthroplasty Preoperative Coagulopathy Management, Arthroplasty Preoperative Infection Prevention, Idiopathic Transient Osteoporosis of the Hip (ITOH), THA Pseudotumor (Metal on Metal Reactions), TKA Postoperative Rehabilitation & Outpatient Management, Works in concert with ACL to provide restraint to, Sartorius and fascia (patellar retinaculum), prevents anterior translation of the tibia relative to the femur, PL bundle originates posterior and distal to AM bundle (on femur), prevents internal tibial rotation with knee near extension, prevents posterior translation of the tibia relative to the femur, PCL and PLC work in concert to resist posterior translation and posterolateral rotatory instability, strength: 2500 N (vs posterior translation), works in concert with MCL to provide restraint to axial rotation, on the fibula anterior to the popliteofibular ligament on the fibula, capsule's most distal extent is just posterior to the fibula, works in concert with ACL to provide restraint to axial rotation, separated from superficial portion by a bursa, posterior fibers of the deep MCL blend with posteromedial capsule and POL. (OBQ12.113) A 28-year-old football player sustains a contact knee injury while being tackled. medial calcaneal tuberosity. In this episode, we review the topic of Knee Arthroscopy from the Approaches section. knee biomechanics. Plantar fascia (windlass mechanism) origin. In this episode, we review the topic of Posterior Cervical Laminectomy and Fusion from the Techniques section. The tibiofemoral joint allows transmission of body weight from the femur to the tibia while providing hinge-like, sagittal plane joint rotation along with a small degree of tibial axial rotation. The knee is a mechanism of three joints and Four bones - the femur, tibia, patella and fibula Interact in separate joints - the tibiofemoral & patellofemoral The function of these joints is to allow certain movements, restrict others, and to provide load transfer through the lower limb. MB BULLETS Step 1 For 1st and 2nd Year Med Students. These include, LCL (lateral collateral ligament or fibular collateral ligament), works synergistically with the PCL to control, MFC to medial tibia extending down several centimeters, lies just deep to gracilis and semitendinosus, originates from medial femoral epicondyle and inserts into periosteum of proximal tibia (deep to pes anserinus). At level of knee joint branches include medial genicular artery. MB BULLETS Step 1 For 1st and 2nd Year Med Students. Copyright © 2021 Lineage Medical, Inc. All rights reserved. Joint reaction force defined as force generated within a joint in response to forces acting on the joint. The tibial attachment of Bundle B is anterior to Bundle A. ORTHO BULLETS Orthopaedic Surgeons & Providers 2. In this episode, we review the topic of Retroperitoneal (Anterolateral) Approach to the Lumbar Spine from the Approaches section. True patellar instability is a topic separate from the subject of anterior knee pain. In this episode, we review the topic of Extensile Lateral Approach to Calcaneus from the Approaches section. The tibial attachment of Bundle A is anterior to Bundle B. MB BULLETS Step 2 & 3 For 3rd and 4th Year Med Students. The tibial attachment of Bundle A is anterior to Bundle B. knee stability, biomechanics (Sports Med Arthrosc Rev 2011;19:82–92) T he knee can be conceptualized as 2 joints—a tibiofe-moral and a patellofemoral joint. reports of the knee “giving way” or buckling. The function of which of the following structures is to resist internal tibial rotation with the knee in full extension? function. In this episode, we review the topic of Knee Medial Parapatellar Approach from the Approaches section. MB BULLETS Step 2 & 3 For 3rd and 4th Year Med Students. MB BULLETS Step 1 For 1st and 2nd Year Med Students. In this episode, we review the topic of Anterior Cervical Diskectomy and Fusion with Plate and Peak Cage (ACDF) from the Techniques section. the deep MCL and posteromedial capsule act as secondary restraints to valgus stress at full knee extension. In this episode, we review the high-yield topic of Knee Biomechanics from the Recon section. In extension, Bundle A is loose and Bundle B is tight. Knee anatomy orthobullets. Watch the full webinar and more like it on Orthobullets: https://www.orthobullets.com/video/view?id=1640 MB BULLETS Step 1 For 1st and 2nd Year Med Students. Anterior and between the intercondylar eminences of the tibia. MB BULLETS Step 2 & 3 For 3rd and 4th Year Med Students. MB BULLETS Step 2 & 3 For 3rd and 4th Year Med Students. resists valgus load and tibial internal rotation in full extension, provide restraint against lateral translation of the patella from 0° to 30° of knee flexion, low tension throughout flexion-extension (2-10N of force), isometric between 0° and 90°, then becomes slack beyond 90°, much lower load to failure than ACL (1725N), lies in 2nd layer of medial soft tissue complex, short oblique bundle, inserts on superior patellar pole, medial femoral condyle, distal to adductor tubercle and proximal to MCL attachment, 1.3mm anterior to posterior femoral diaphyseal cortex, 2.5mm distal to posterior origin of medial femoral condyle, proximal to the level of the posterior point of Blumensaat's line, fan-like structure inserting at junction between proximal-middle thirds of superomedial border of patella, tears off femoral attachment > patellar attachment, risk of 3rd dislocation (after 2nd dislocation) is 50%, midway between Gerdy's tubercle and head of fibula, attachments to middle third of lateral meniscus body, lateral inferior genicular artery and vein contained between lateral meniscus and ALL at level of joint line, Segond's fracture (associated with ACL rupture) is avulsion fracture of ALL. 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