Female, 67 years old. Pain MENISCI: There is marked fragmentation of the posterior horn of the medial meniscus. A horizontal component of tearing extends into the anterior horn, with extension to the femoral articular surface and an associated 6 mm parameniscal cyst (series 5, image 9). The lateral meniscus is unremarkable.ARTICULAR CARTILAGE AND BONE: There is diffuse cartilage thinning of the medial compartment, with irregularity and areas of complete cartilage loss involving the medial femoral condyle. There is extensive cartilage loss of the patellofemoral articulation, with underlying marrow reactive changes and cyst formation involving the undersurface of the patella and the lateral femoral trochlea. Tricompartmental osteophytes are noted.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1.Osteoarthritis, with significant cartilage loss involving the medial tibiofemoral articulation and the patellofemoral articulation as above.2.Marked fragmentation of the posterior horn of the medial meniscus.3.Horizontal tear of the anterior horn medial meniscus with a small parameniscal cyst.