43-year-old male with knee pain, evaluate for medial meniscal tear. MENISCI: There is branching signal abnormality within the posterior horn of the medial meniscus indicating a complex tear, which consists of a longitudinal component extending to the tibial articular surface and perhaps the femoral articular surface along the inner half of the meniscus as well as a more vertical component extending to the tibial articular surface within the periphery. Increased signal intensity extends into the body of the medial meniscus which likely reflects intrasubstance degeneration. The anterior horn of the medial meniscus appears normal. There is prominence of the body of the lateral meniscus, suggesting a mild discoid morphology, which contains mildly increased signal intensity suggesting intrasubstance degeneration, but no discrete tear is evident.ARTICULAR CARTILAGE AND BONE: There is focal degeneration of the articular cartilage along the trochlea. The remainder of the articular cartilage is normal. No abnormal marrow signal within the bone.LIGAMENTS: The ACL and PCL are intact. The MCL and lateral collateral ligament complex is intact.EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
Complex tear of the posterior horn of the medial meniscus and other findings as described above.