Pain and swelling MENISCI: Poorly defined intermediate signal intensity within the posterior horn of the medial meniscus extends toward the femoral articular surface, but I see no frank disruption of the meniscal surface to confirm a tear. The remainder of the medial meniscus appears normal. The lateral meniscus appears normal.ARTICULAR CARTILAGE AND BONE: There is a well-defined full-thickness defect of the articular cartilage of the lateral femoral condyle above the posterior horn of the lateral meniscus. This defect measures just over 1 cm in AP dimension and approximately 5 mm in mediolateral dimension. There is additional delamination of the articular cartilage immediately posterior to this defect. There is also a tiny partial-thickness defect more anteriorly within the articular cartilage of the lateral tibial plateau. The articular cartilage of the medial tibiofemoral compartment appears relatively intact. The articular cartilage of the patellofemoral compartment likewise appears intact.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The quadriceps and patellar tendon appear intact. There is slight lateral translation of the patella relative to the center of the femoral trochlea, with a borderline tibial tubercle to trochlear groove distance of 18 mm. There is a small joint effusion.
Full-thickness defect of the articular cartilage of the lateral femoral condyle with adjacent cartilage delamination. Other findings as above.