Reason: assess for MCL sprain and acute medial meniscal tear History: medial knee pain and 2/2 fall MENISCI: Note is made of increased signal abnormality within the body of the lateral meniscus indicating intrasubstance degeneration. There is blunting of the free edge of the body of the lateral meniscus indicating a small horizontal cleavage tear which extends to the femoral articular surface. The medial meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is focal full-thickness articular cartilage degeneration along the anterior aspect of the lateral femoral condyle with a 2.5 cm area completely devoid of articular cartilage. There is associated underlying subchondral signal abnormality. The medial tibiofemoral compartment appears relatively spared. There are near full-thickness to full-thickness articular cartilage fissures along the median eminence of the patella and femoral trochlea centrally. There is near full-thickness to full-thickness articular cartilage degeneration along the medial facet of the patella with articular cartilage delamination. There is also near full thickness to full thickness articular cartilage degeneration along the medial facet of the femoral trochlea, inferiorly.LIGAMENTS: The ACL and PCL appear intact. The LCL appears intact. There is thickening and intermediate signal intensity involving the superficial and deep fibers of the MCL indicating a sprain.EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Findings indicating a sprain of the MCL as well as a mild strain injury of the biceps femoris muscle.2. Degeneration and tearing of the lateral meniscus as described above.3. Osteoarthritis of the knee including full-thickness articular cartilage degeneration most pronounced along the patellofemoral and lateral tibiofemoral articulations. 4. Moderate-sized joint effusion. Other findings as described above.