Male, 69 years old. Bilateral knee pain, instability. ARTICULAR CARTILAGE AND BONE: There are large osteophytes at the medial, lateral, and patellofemoral compartments. There is marked medial joint space narrowing with complete loss of the articular cartilage. There is also significant lateral joint space narrowing with some residual thinned articular cartilage. The patellar cartilage is diffusely absent. There is bone marrow edema within the medial and lateral tibial plateaus.MENISCI: There is complete loss of the posterior horn of the medial meniscus and the anterior horn of the lateral meniscus, with irregular small blunted residual posterior horn of the lateral meniscus and anterior horn of the medial meniscus.LIGAMENTS: The ACL is not visualized, compatible with chronic tear. The PCL and collateral ligaments are unremarkable.EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1.Severe osteoarthritis with associated cartilage loss, bone marrow reactive changes, and significant meniscal degeneration as described above.2.Chronically torn ACL.