37 year-old male, unable to bear weight with pain at rest and with internal rotation, history of skiing injury MENISCI: There is obliquely oriented signal abnormality within the posterior horn of the lateral meniscus extending to the tibial articular surface consistent with a tear.ARTICULAR CARTILAGE AND BONE: The articular cartilage is intact. There is mild edema within the posterolateral tibial condyle and anterolateral femoral condyle.LIGAMENTS: The ACL is torn. The PCL is intact. There extensive edema along the posterolateral knee extending along the femoral fibular ligament, which is at least partially torn. The popliteal fibular ligament is also likely torn. The posterolateral joint capsule appears disrupted. Edema extends along the lateral fascia and within the adjacent muscles. There is edema extending along the medial collateral ligament consistent with a sprain, with some fibers remaining intact.EXTENSOR MECHANISM: The quadriceps and patella tendons are intact.ADDITIONAL
1. ACL tear.2. Findings consistent with a posterolateral corner injury as described above as well as an MCL sprain.3. Obliquely oriented tear within the posterior horn of the lateral meniscus.4. Large joint effusion