– 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 of PCL-sacrificing prosthesis while reproducing kinematic effects of PCL; … 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
– Discussion: – thickening of the medial capsular ligament attached proximally to adductor tubercle of femur and distally to tibia & posterior aspect of the capsule; – anatomically this is the third (deep) layer of the medial compartment; – parts of the distal arm: … Read more
– Discussion: – performed to correct equinus deformity at the ankle: – calcaneal (achilles) tendon is lengthened; – ankle joint capsule and all posterior tibiotalar, talofibular, & calcaneofibular ligaments are severed; – tibiofibular syndesmosis is released posteriorly; … Read more
– Anatomy: – this nerve is deep motor branch of radial nerve & supplies all of extrinsic wrist extensors except for the ECRL; – radial nerve enters the anterior compartment of the arm lying deeply between brachialis medially & BR & ECRL laterally; – PIN passes thru supinator muscle in its course from anterior to … Read more