Female, 52 years old. Left anterior knee pain going up and down stairs. MENISCI: There is abnormal signal within the anterior horn of the lateral meniscus extending toward the root, compatible with a vertical tear with both vertical and horizontal components. The medial meniscus is intact.ARTICULAR CARTILAGE AND BONE: There is near full thickness cartilage loss involving the lateral patellar facet more focal area of cartilage loss at the apex, with mild underlying marrow signal abnormality in the patella as well as a small focus of marrow signal abnormality along the lateral femoral trochlea. Tibiofemoral articular cartilage is intact.LIGAMENTS: Cruciate and collateral ligaments are intact.EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
1.Complex tear of the anterior horn of the lateral meniscus.2.Patellar cartilage loss with mild associated marrow signal abnormality in the patella and lateral femoral trochlea.3.Moderate to large joint effusion.