– Discussion: – unlike anterolateral bowing, this disorder is not assoc w/ other anomalies (like neurofibromatosis) nor is it associated w/ tibial frxs or pseudarthrosis, such as congenital pseudarthrosis of tibia; – clinical findings: – posteromedial bowing – calcaneal valgus … Read more
– Discussion: – arises from disruption of the lateral collateral and annular ligaments; – associated conditions: elbow dislocation, radial head excision, coronoid fracture; – diff dx: lateral epicondylitis – LCL anatomy: – lateral collateral ligament consists of a ligamentous expansion proceding down from lateral … Read more
– Anatomy: – anterior compartment – lateral compartment – deep posterior compartment – superfical posterior – Anatomy: – position: either prone or on side, with the affected extremity uppermost; – incision: – incision is made just posterior to the … Read more
– Discussion: – posterior talofibular ligament arises from the nonarticular surface of posteromedial Fibula & inserts onto lateral tubercle of talus; – it is strongest of the lateral ligaments; – prevents posterior and rotatory subluxation of the talus; – fibers are oriented horizontally, & tensed only in … Read more
– See: Anterior Tibial Artery – Discussion: – posterior tibial artery enters posterior compartment of leg lying posterior to tibialis posterior & enters plantar foot after passing behind medial malleolus; – largest branch is peroneal artery arising high in leg and coursing downward in posterior compartment, lying just medial to fibula; – gives off branches to … Read more
– See: Lateral Approach – Discussion: – allows exposure of the entire distal humerus as well as radial head, radial neck, and biceps tuberosity; – indications for this approach include frxs of distal humerus, old posterior elbow dislocations, radial head frx, radial head excisions, arthroplasties, fixation of distal biceps tendon rupture, and … Read more
– Discussion: – allows access for ORIF of fractures of ankle w/ frx of posterior tibial lip; – allows access for removal of osteochondritis dissecans fragments from lateral part of dome of talus and for osteochondromatosis of ankle; – Incision: – begin incision about 12 cm proximal to tip of … Read more
– See: – tibial component – proximal tibial cut – extra-medullary cutting guide; – Discussion: – viewed in saggital plane, line drawn between anterior & posterior rims of the tibial plateaus is approx 10 deg posteriorly; – this radiographic tilt does not take the menisci into … Read more
– See: – Biomechanics of TKR – Joint Line Position – PCL Retaining TKR – Discussion: – cruciate ligaments are needed for running atheletes, but are not as important to resist forces in thesagittal plane in reconstructed arthritic knee; – theoretically, PCL-substituting TKR allow exposure & ligament correction … Read more
– See: PIN – Inciting causes: – radiocapitellar joint ganglions and synovitis – congenital tightness of ligamentous arcade of Frohse; – include poorly placed screws for fracture fixation – PIN is vulnerable during ORIF of proximal radius; – in 25% … Read more