Reason: Right knee pain after "ligament injury" years ago; recent re-injury 1 month. History: right knee pain MENISCI: There is a radial tear through the posterior horn of the medial meniscus. The lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is generalized thinning of the central weightbearing component of the articular cartilage of the medial femoral condyle without focal defect. There is irregularity of the articular cartilage of the lateral femoral condyle with multiple small focal partial-thickness defects. There are several small partial thickness tears of the patellar cartilage at the junction between the medial and lateral facets.LIGAMENTS: The ACL is not visualized, consistent with complete tearing. There are no secondary signs of ligamentous injury and the bone marrow signal appears normal, indicating subacute or chronic injury. The PCL, LCL, and MCL are intact. EXTENSOR MECHANISM: The patellar and quadriceps tendons are intact.ADDITIONAL
1. Nonvisualization of the ACL, consistent with subacute or chronic tearing.2. Radial tear through the posterior horn of the medial meniscus.3. Articular cartilage degeneration as described above.