Reason: assess for lateral meniscus tear History: right knee pain. MENISCI: Complex multidirectional tearing of the body and anterior and posterior horns of the lateral meniscus, new compared to prior. There is near complete loss of the posterior horn in its expected location with ill defined signal anterior to the anterior horn likely representing flipped posterior horn.Complex multidirectional tearing of the posterior horn of the medial meniscus is slightly improved compared to prior.ARTICULAR CARTILAGE AND BONE: Previously seen cleft-like defect of the articular cartilage of the femoral trochlea centrally is not significantly changed. Increased signal intensity along the lateral patellar facet articular cartilage likely reflecting degeneration is also not significantly changed.Diffuse thinning of the articular cartilage of the medial tibiofemoral compartment with full-thickness defect of the femoral cartilage overlying the torn posterior horn of the medial meniscus with underlying femoral condyle edema, unchanged.Near full thickness defect of the articular cartilage overlying the lateral tibial plateau underlying the expected location of the posterior horn of the lateral meniscus. Tricompartmental osteophyte formation again noted.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1.New complex multidirectional tearing of the body, anterior and posterior horns of the lateral meniscus, with the posterior horn flipped anterior to the anterior horn of the lateral meniscus.2.Previously seen multidirectional tearing of the posterior horn of the medial meniscus is stable to slightly improved compared to prior.3.Tricompartmental osteoarthritis. 