Right knee pain and swelling. Evaluate for ACL tear. MENISCI: Diffusely abnormal signal within the medial meniscus particularly within the posterior horn likely represents intrasubstance degeneration (sagittal series 5, image 20). No definite tear of the medial meniscus. The lateral meniscus is intact.ARTICULAR CARTILAGE AND BONE: Abnormal signal within the anterior tibial epiphysis likely represents a bone contusion. LIGAMENTS: Abnormal signal within the PCL at the proximal femoral insertion into the intercondylar notch. The distal portion of the PCL is normal in appearance. The ACL may be slightly thickened but is intact. The collateral ligaments are intact.EXTENSOR MECHANISM: The extensor mechanism is intact. ADDITIONAL
1. Abnormal signal within the PCL at the proximal insertion into the intercondylar notch may represent a partial tear. 2. Edema within the anterior tibial epiphysis likely represents a bone contusion.3. Moderate knee joint effusion with soft tissue edema in the popliteal fossa.