(p. 447) Superior tibiofibular joint 

The superior tibiofibular joint is a diarthrodial plane joint between the medial facet of the head of the fibula and the tibial facet on the posterolateral tibial condyle. The joint has a fibrous capsule reinforced by anterior and posterior superior tibiofibular ligaments and tendinous insertions, making it inherently stable when the knee is extended. Injuries to the superior tibiofibular joint are relatively rare but should be considered in all patients presenting with lateral knee pain. Injuries are more likely to occur acutely and may result in instability if the primary joint stabilizers are damaged. If the acute injury is particularly severe, joint dislocation may occur which will require relocation when identified. Chronic superior tibiofibular joint injuries may occur as a complication of acute injuries or de novo as overuse injuries. Chronic injuries are a diagnostic challenge. Other pathologies affecting the joint include osteoarthritis, ganglions, and, rarely, neoplasms.