44-year-old male complains of right leg and knee pain and inability to bear weight. MENISCI: The lateral meniscus appears normal. There is mild intrasubstance degeneration of the medial meniscus with additional poorly defined increased signal intensity within its inner fibers, suggesting fraying; however, we see no discrete tear.ARTICULAR CARTILAGE AND BONE: There is full thickness degeneration of the articular cartilage of the femoral trochlea centrally. There is mild to moderate degeneration of the articular cartilage of the medial facet of the patella. There is also a full-thickness defect of the articular cartilage of the medial femoral condyle just above the posterior horn of the medial meniscus. The articular cartilage of the lateral compartment appears intact.LIGAMENTS: There is minimal increased signal intensity within the proximal fibers of the LCL proper suggesting mild degeneration, but otherwise the cruciate and collateral ligaments are unremarkable. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1. Cartilage degeneration involving the patellofemoral and medial compartments as described above.2. Mild degeneration and possible fraying of the medial meniscus without a discrete tear.3. Other findings as above.