15-year-old male with left knee pain, evaluate for ligamentous/meniscal injury MENISCI: The lateral and medial menisci are intact.ARTICULAR CARTILAGE AND BONE: There is a bony contusion injury involving the anterior aspect of the medial tibial plateau and the medial femoral condyle with no underlying fractures. There is also an edema-type signal at the posterior aspect of the femoral condyle and the fibular head. The possibility of a small fracture through the fibular head cannot be ruled out. Edema at the lateral femoral physis is also noted.The articular cartilage remains intact.LIGAMENTS: There is edema at the proximal attachment of the ACL within the intercondylar notch, but the ACL remains intact. The PCL and collateral ligaments are also intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1. High-grade partial-thickness tear of the lateral head of the gastrocnemius at its femoral attachment, associated with a small adjacent hematoma.2. Edema type signal at the posterior aspect of the femoral condyle and fibular head. The possibility of a small fracture through the fibular head cannot be ruled out.3. Bony contusion injury involving the anterior aspect of the medial tibial plateau and the medial femoral condyle (hyperextension injury) without evidence of underlying fractures.4. The collateral and cruciate ligaments remain intact.