49-year-old female with left knee pain, medial joint line tenderness, no improvement with injections or conservative treatment MENISCI: Globular intermediate signal within the outer third of the anterior horn of the lateral meniscus extending to the femoral articular surface consistent with degenerative fraying. Blunting of the free edge of the posterior horn of the lateral meniscus compatible with a tear.The medial meniscus is within normal limits.ARTICULAR CARTILAGE AND BONE: A focal chondral defect is noted in the lateral tibial articular cartilage measuring up to 4 mm in AP dimension, directly beneath the aforementioned meniscal tear. Grade 1-2 chondromalacia medial tibiofemoral compartment. There is severe thinning of the lateral patellar facet articular cartilage. Subchondral cysts are noted in the lateral tibial plateau/spine. Otherwise, there is no abnormal marrow signal. Mild tricompartmental osteophytosis is noted.LIGAMENTS: Cruciate ligaments are intact. Collateral ligaments are intact.EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1.Blunting of the free edge of the posterior horn of the lateral meniscus compatible with a tear. Underlying focal chondral defect is also noted in the lateral tibial articular cartilage measuring up to 4 mm in AP dimension2.Globular intermediate signal within the outer third of the anterior horn of the lateral meniscus extending to the femoral articular surface consistent with degenerative fraying. 3.Focal 4 mm loose body is also noted in the pocket of fluid posterior to the femoral metaphysis.4.Mild to moderate osteoarthritis affects the left knee. 