Female, 53 years old. Right knee pain MENISCI: There is almost complete loss of the posterior horn of the medial meniscus with a small focal round. The anterior horn and the lateral meniscus are intact.ARTICULAR CARTILAGE AND BONE: There is diffuse cartilage thinning of the patellofemoral articulation with underlying marrow reactive changes in the lateral patellar facet. There is diffuse thinning of the medial and lateral tibiofemoral articular cartilage, with complete loss of the weightbearing cartilage of the medial femoral condyle and medial tibial plateau with underlying marrow edema in both sides of the joint in this location. Tricompartmental osteophytes are noted.LIGAMENTS: Fibers of a normal ACL and visualize, compatible with a tear which is likely chronic. The PCL is unremarkable. The collateral ligaments are unremarkable. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1.Osteoarthritis with cartilage loss predominantly affecting the medial patellofemoral articulation.2.Near absence of the posterior horn of the medial meniscus as above.3.Chronic tear of the ACL.4.Moderate joint effusion and Baker's cyst with multiple loose bodies as above.