Status post left knee arthroscopy with microfracture. Continued pain and mechanical symptoms. MENISCI: There is abnormal signal intensity within the anterior horn and body of the lateral meniscus extending to the tibial articular surface. There is heterogenous signal intensity anterior to the anterior horn of the lateral meniscus that likely reflects parameniscal cyst formation. There is also thin linear horizontal signal within the posterior horn extending to the free edge of the lateral meniscus. These findings are compatible with degenerative tearing although could in part represent residual intrameniscal signal following partial meniscectomy. There is also thin horizontally oriented intermediate signal within the posterior horn of the medial meniscus extending to the free edge, as well as increased signal intensity within the body of the medial meniscus extending to the tibial articular surface. Again, these findings suggest degenerative tearing, although could conceivably represent residual intrameniscal signal following partial meniscectomy.ARTICULAR CARTILAGE AND BONE: There is near full thickness degeneration of the articular cartilage of the lateral femoral condyle above the posterior horn of the lateral meniscus with relatively mild degeneration of the articular cartilage of the lateral tibial plateau beneath and anterior to the posterior horn of the meniscus. There is relatively mild degeneration of the articular cartilage of the medial tibiofemoral compartment. There is full thickness fissuring/delamination of the articular cartilage of the femoral trochlea superiorly with superficial degeneration of the articular cartilage of the patella. There are small tricompartmental osteophytes but we see no bone marrow edema or cysts. LIGAMENTS: Cruciate and collateral ligaments are intact.EXTENSOR MECHANISM: Extensor mechanism is intact. ADDITIONAL
1. Articular cartilage degeneration as described above, most prominently affecting the femoral trochlea and the lateral compartment.2. Medial and lateral meniscal abnormalities suggestive of degenerative tearing, although could conceivably reflect residual signal following partial meniscectomy.3. Moderate sized joint effusion.