55-year-old male with history of meniscal tear. Evaluate. MENISCI: There is a complex tear of the medial meniscus which consists of blunting of the inner one third of the posterior horn of the medial meniscus just medial to its root indicating a partial thickness radial tear, which is contiguous with a more horizontally oriented tear. The horizontally oriented tear propagates into the body of the meniscus and it extends to the free edge of the meniscus as well as the femoral articular surface and the probably the tibial articular surface. Furthermore, the posterior aspect of the body of the medial meniscus appears abnormally small suggesting additional chronic attritional tear assuming no prior meniscectomy. More anteriorly, the body of the medial meniscus appears slightly medially extruded. Mild intrasubstance degeneration of the lateral meniscus without tear.ARTICULAR CARTILAGE AND BONE: There is moderate degenerative thinning of the articular cartilage at the medial compartment, particularly involving the medial tibial plateau where there is associated underlying subchondral signal abnormality. Degeneration of the articular cartilage of the far posterior aspect of the medial femoral condyle with underlying low signal intensity in the subchondral bone is also present.Articular cartilage of the lateral compartment appears intact. Articular cartilage of the patella appears intact. There is a small near full thickness or full thickness fissure within the articular cartilage of the medial facet of the femoral trochlea.LIGAMENTS: The anterior and posterior cruciate ligaments are intact. The medial and lateral collateral ligaments are intact.EXTENSOR MECHANISM: The patellar and quadriceps tendons are intact.ADDITIONAL
1.Complex tear of the medial meniscus. 2.Osteoarthritis changes as above.