Data Trace Editor – Anteromedial Portal: – for visualization of the lateral compartment, and instrumentation of the the medial compartment; – this portal is located in a manner similar to the anterolateral portal, that is, 1 cm above the medial joint line and 1 cm medial to the edge of the patellar tendon; … Read more
– Discussion: – proximal medial, distal lateral shift (medial mig) – stem rotates around the center point; – medial stem pivot is caused by medial migration of proximal portion of femoral stem; – lateral migration of the distal tip results from inadequate superomedial and inferolateral cement support; – this may produce a fracture of the … Read more
– Discussion: – motivation: w/ maximal elbow flexion, high extraneural pressures occur at the medial epicondyle; – hence the medial epicondyle is a major impinging structure which forces the ulnar nerve to make a sharp turn whenever the elbow is maximally flexed; – medial … Read more
– See: – blood supply for femoral head; – external rotators of the hip – Discussion: – MFCA supplies majority of blood supply to femoral head; – branches of MFCA enter capsule of hip joint near its distal insertion and couse proximally along femoral neck toward … Read more
– Discussion: – medial malleolar frx result from direct impact of talus or from tension as talus rotates or moves laterally following fibula; – in children medial malleolus frx may represent supination inversion frx; – injury patterns: – deep deltoid ligament may be torn, leaving malleolus intact; – anterior colliculus may be avulsed by superficial … Read more
– Anatomy: – humeral origin of MCL lies posterior to axis of elbow flexion, creating cam effect; – hence, anterior fibers are stressed in extension & posterior fibers are stressed in flexion; – anterior oblique, posterior oblique ligament, & small transverse ligament are 3 major portions of the … Read more
– See: Medial Collateral Ligament: – Superficial Layer (Layer I) – most superficial layer includes the deep fascia that arises from anterior to posterior encases entire medial aspect of the knee & coalesces w/ hamstring muscles and posteromedial capsule; – this first layer is superficial to superficial MCL; … Read more
– See: Medial Approach: – Discussion: – medial epicondyle is common origin of several flexor muscles of hand and wrist; – when medial epicondyle is frxed, flexor muscles pull fragment distally; – during surgical procedure care must be made to protect ulnar nerve; – Fixation Stratedgy: – … Read more
– Anatomy: – arises from anterior division of lower trunk: C8 & T1; – medial cord branches into ulnar nerve & the medial root of the median nerve; – medial pectoral – medial branchial cutaneous – medial antebrachial cutaneous – division of medial … Read more
– See: – Pediatric Elbow Injuries – distal humeral physeal separation – lateral condyle frx, pediatric – supracondylar frx of humerus – Discussion: – third most common pediatric elbow frx (5-10%) (behind supracondylar and lateral condylar fractures); – most common between ages of 9 … Read more