Reason: sports injury knee pain History: pain MENISCI: There is linear increased signal abnormality within the peripheral fibers of the posterior horn of the medial meniscus which extends to the femoral articular surface indicating a longitudinal tear. There is linear signal abnormality within the posterior horn of the lateral meniscus which extends to the tibial and femoral articular surfaces which may represent superficial fraying or tiny longitudinal tears. ARTICULAR CARTILAGE AND BONE: There is increased bone marrow signal abnormality within the lateral femoral condyle and posterior lateral tibial plateau likely representing bone contusions. There is depression along the weightbearing surface of the lateral femoral condyle indicating an impaction fracture "lateral notch sign". There is an associated full-thickness articular cartilage fissure along the posterior aspect of the aforementioned impaction fracture.LIGAMENTS: There is complete disruption of the ACL involving its proximal and midsubstance fibers. The PCL appears intact. The superficial band of the MCL appears intact. There is increased signal abnormality along the medial aspect of the medial femoral condyle indicating disruption of the meniscofemoral coronary ligament. The LCL appears intact. There is increased signal abnormality in the expected location of the oblique popliteal ligament which may indicate a sprain or disruption, however, this is equivocal. The posterior oblique ligament appears intact.EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Disruption of the ACL through its proximal and midsubstance fibers.2. Longitudinal tear through the posterior horn of the medial meniscus. Probable superficial fraying or tiny longitudinal tearing of the posterior horn of the lateral meniscus as well.3. Disruption of the meniscofemoral coronary ligament of the deep component of the MCL.4. Bone contusions along the lateral femoral condyle and lateral tibial plateau including a lateral notch sign and full-thickness articular cartilage fissure in the adjacent area, as described above.5. Large joint effusion with fluid fluid levels likely representing a hemarthrosis. Other findings as described above.