Aug 12, 2024 · Medial patellofemoral ligament injuries include sprains, partial and complete tears as well as pure bony or osteochondral avulsion injuries. Mechanism. A common mechanism of medial patellofemoral injury is mal-tracking of the patella during knee flexion with the tibia in a valgus position.

Mar 16, 2023 · The medial patellar retinaculum is often partially or completely torn in lateral patellar dislocation 4. It is more commonly injured than the lateral patellar retinaculum. See also. lateral patellar retinaculum

This case illustrates typical findings in previous lateral patellar dislocation: medial patellofemoral ligament injury with a patellar avulsion fracture and a tear of the femoral origin; bone bruises at the typical locations at the inferomedial patella and the anterolateral margin of the lateral femoral condyle; a tear of the medial retinaculum

Mar 16, 2023 · The lateral patellar retinaculum is less commonly injured than the medial patellar retinaculum, however it is often disrupted during surgery to correct abnormal lateral patellar tracking or dislocation 3.

Aug 23, 2022 · The medial patellofemoral ligament (MPFL) belongs to the anterior medial supporting structures of the knee 1-3 and it is the main structure, preventing the patella from lateral displacement at 50-60% restraining force 1,7-9. It is one of the medial patellar stabilizers together with the medial retinaculum and the vastus medialis oblique muscle 5.

Medial patellar retinaculum shows relative thinning with partial fiber disruption and peri-ligamentous edema denoting partial-thickness tear. Massive synovial effusion showing fluid/fluid level and internal dark signals on different pulse sequences, suggesting hemosiderotic and/or fibrotic deposits (hemarthrosis).

Thickening and hyperintensity involving medial head of gastrocnemius tendon at its origin at medial epicondyle of femur with partial interstitial tear of lateral fibers. Significant surrounding soft tissue edema is seen extending to superficial aspects of medial patellar retinaculum and medial collateral ligament.

Mar 24, 2023 · fibers originate from the adductor tubercle and intermusclar septum to insert on the proximal third of the medial patella. acts as a medial patellar stabilizer

Dec 19, 2024 · The medial collateral ligament (MCL) of the knee is a flat, triangular band on its medial aspect that resists valgus forces. It forms part of the medial capsuloligamentous complex of the knee.

Dec 8, 2024 · The most obvious sign of medial collateral ligament injury is its discontinuity in case of a partial or complete tear. Other signs include a wavy form of the ligament.