73-year-old male with right knee pain for 3 years. Evaluate for medial meniscus tear. MENISCI: There is linear branching signal abnormality traversing the posterior horn of the medial meniscus extending to the tibial and femoral articular surfaces consistent with a complex tear. There is globular increased signal abnormality within the posterior horn of the medial meniscus consistent with intrasubstance degeneration. There is increased signal abnormality along the undersurface of the body and anterior horn which extends to the tibial articular surface and is associated with deformity of the meniscus, consistent with fraying/degenerative tearing. The lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is full-thickness articular cartilage degeneration along the weightbearing portion of the medial femoral condyle and medial tibial plateau with underlying subchondral signal abnormality. There is also near full-thickness articular cartilage degeneration along the lateral femoral condyle above the anterior horn of the meniscus. There is thinning of the articular cartilage along the medial facet of the patella. There is a focal full-thickness articular cartilage defect along the median eminence of the patella with underlying subchondral signal abnormality and focal articular cartilage delamination. There are tricompartmental osteophytes.LIGAMENTS: The cruciate and collateral ligaments appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact. There is nonspecific subcutaneous edema along the anterior aspect of the patella and patellar tendon as well as medially about the knee.ADDITIONAL
1. Tearing of the medial meniscus as described above. Full-thickness articular cartilage degeneration as described above.2. Large joint effusion.3. Other findings as described above.