Medial-Side Injury of the Knee

Whereas in lateral-side injuries of the knee, clear distinctions have been made between the lateral and posterolateral structures as separate entities, both of which are important in controlling varus laxity and external rotation, medial-sided knee injuries have often been identified with injuries to the superficial medial collateral ligament (MCL). In actual fact, the internal aspect of the knee is a far more complex structure, and the posteromedial corner, with its static and dynamic stabilisers, plays a fundamental role in medial knee stability, in controlling rotation, in the stabilisation of the medial meniscus, and in controlling anterior stability when the anterior cruciate ligament (ACL) is insufficient.