– Discussion: – tripled layered arrangement on the lateral aspect of knee; – posterolateral part of capsule is divided into two laminae that encompass LCL, fabellofibullar, & arcuate ligaments; – Layer I – superficial Layer (Layer I): 2 parts; – iliotibial tract (and its expansion anteriorly) … Read more
– Discussion: – usually arises from lateral side of deep femoral artery; – in 15% of pts, it arises from femoral artery above profunda; – LFCA passes laterally in front of Psoas & between branches of Femoral Nerve; – passes deep to Sartorius & rectus femoris, and … Read more
– See: – Lateral Compartment of the Knee: – Frx of Proximal Fibula: – Varus Stress Testing: – Discussion: – lateral collateral ligament is primary restraint to varus angulation; – LCL also acts to resist Internal Rotation forces; – cutting of LCL in … Read more
– Discussion: – it is a continuation of musculocutaneous nerve originating from C5 – C8 nerve roots and lateral cord of brachial plexus; – be aware of the frequent anatomic variation as it crosses the elbow; – becomes superficial at anterolateral aspect of elbow between biceps and brachialis muscle; … Read more
– See: Kocher Approach to Elbow: – Discussion: – allows exposure of lateral column (for condylar frx), capitellum, and radial head, – it can also be used for Monteggia frx as well as for exposure for PIN decompression; – lateral approach is not optimal for complex … Read more
– Lateral Approach: – incision is made directly lateral in thigh & thru midpoint of lateral condyle distally, staying anterior to proximal insertion of LCL; – proximal exposure: – incision is extended as necessary for diaphyseal involvement of the supracondylar frx; – … Read more
– Discussion: – see: lag screw theory: – when the fibular fracture is sufficiently oblique, is not comminuted, and is not osteoporotic, then sufficient fixation can be achieved w/ only two lag screws; – the oblique fracture should be longer than 2x diameter of bone inorder for … Read more
– See: Screw Menu – Discussion: – involves placement of one or more screws across a frx or osteotomy site to achieve interfragmentary compression; – note that the direction along which the compression acts (inclination of lag screw) must coincide well w/ perpendicular axis of the fracture surface; … Read more
– See: – Anterior Cruciate Ligament – Anterolateral Rotatory Instability – Clunk Test – Losee Test – Pivot shift – Discussion: – this is a variant of the anterior drawer test, in which the examination is carried out … Read more
– Discussion: – self limiting avasulcar necrosis of the navicular; – usually unilateral and affects children, most often boys; – onset is at age 4 in boys and age 5 in girls; – navicular is subjected to repetitive compressive forces during wt bearing which may be a … Read more