ACL rupture, check lateral collateral ligament. MENISCI: Horizontal linear signal is observed in the posterior horn of the medial meniscus without definite clear extension to the inferior articular surface. The remaining menisci are otherwise intact and well positioned, specifically the posterior aspects are well anchored bilaterally.ARTICULAR CARTILAGE AND BONE: Marrow signal within osseous structures are intact and well aligned. Specifically no evidence of contusion or acute abnormality. Cartilage is well visualized throughoutLIGAMENTS: Minimal signal is observed along the medial retinaculum and medial collateral ligament with adjacent soft tissue changes suggesting mild to moderate sprain. Fibers appear intact in both these ligaments. Additionally the ACL, PCL and remaining ligaments are also otherwise intact. Specifically ACL is well visualized.EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
MCL and medial retinaculum appear moderately sprained, along with an intrasubstance linear signal within the medial posterior meniscal horn, as described.