38 year-old female history of left knee pain and swelling. Evaluate for ligamentous injury. MENISCI: There is a large complex tear of the posterior horn of the medial meniscus which consists predominantly of a complete/near-complete radial tear. The tear is seen on multiple consecutive sagittal images. Additionally, there is increased signal abnormality within the body of the medial meniscus which likely represents degeneration and likely extension of the tear. There is medial extrusion of the body of the medial meniscus.We see no discrete tear of the lateral meniscus, although the inferior popliteomeniscal fascicles are not seen and could be torn.ARTICULAR CARTILAGE AND BONE: There is near full thickness articular cartilage loss along the medial femoral condyle just above the torn meniscus. Additionally, there is subjective thinning of the articular cartilage of the remaining weight-bearing portions of the knee. There is near-full-thickness cartilage loss along the femoral trochlea centrally and inferiorly. There is moderate degenerative articular cartilage loss along the medial patellar facet. There are tricompartmental osteophytes.There is mild bone marrow edema within the posterior aspect of the lateral tibial plateau and lateral femoral condyle above the anterior horn of the lateral meniscus, possibly representing bone contusions.LIGAMENTS: Although the visualized distal fibers of the anterior cruciate ligament appear intact with a normal slope, the ligament cannot be followed to its insertion on the femur and therefore we cannot exclude a tear. The PCL, MCL, and lateral collateral ligament complex are is intact.EXTENSOR MECHANISM: The extensor mechanism is intact. There is mild edema along the subcutaneous tissues anterior to the patellar tendon, nonspecific.ADDITIONAL
1.Complex tear of the posterior horn of the medial meniscus as above.2.Findings suggestive of ACL tear at its femoral attachment.3.Osteoarthritic changes and other findings as above.