Presentation
Medial knee pain after a motor vehicle accident
Patient Data
There is a complete tear through the medial patellofemoral ligament with extensive surrounding hemorrhage. The medial collateral ligament is intact. There is a large bony contusion involving the anteromedial aspect of the femoral condyle with a small associated depressed anterior condylar impaction fracture. The medial meniscus is intact. The patellofemoral articulation is normal. No features of chondral shear injury. Grade 2 musculotendinous tear of the vastus medialis obliquus. The ACL and PCL are intact. The posterolateral corner and lateral meniscus are intact. Diffuse subcutaneous edema/hemorrhage.
Case Discussion
Medial patellofemoral ligament injury with complete disruption of the femoral origin. The collateral and cruciate ligaments are intact. Only two sequences were shown to demonstrate this injury.
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