Prior ACL repair 16 years ago now with instability. Evaluate ACL graft and meniscus. MENISCI: There is complex tearing of the posterior horn and body of the medial meniscus. Additionally, there is blunting of the anterior horn of the medial meniscus. There is a complex tear of the posterior horn/body junction of the lateral meniscus.ARTICULAR CARTILAGE AND BONE: There are postsurgical changes of an ACL reconstruction. The femoral and tibial tunnels appear to be within normal limits of alignment when compared to the MR equivalent of the Blumensaat line.There is heterogeneity of the articular cartilage of the weight-bearing portion and posterior portion of the lateral femoral condyle. No full-thickness chondral defects are identified. The articular cartilage of the medial femoral condyle and extensor compartment are intact.LIGAMENTS: The ACL graft is intact. The posterior cruciate ligament is intact. The collateral ligaments are intact.EXTENSOR MECHANISM: There is a defect within the central portion of the patellar tendon which is presumably related to the ACL graft donor site.ADDITIONAL
1. Intact ACL graft.2. Complex tearing of the medial and lateral menisci.3. Loose body adjacent to the ACL graft.