Pain, swelling, and instability after fall. MENISCI: There is mildly increased signal within the posterior horn of the medial meniscus which does not definitively extend to the articular surface. No discrete meniscal tears are identified.ARTICULAR CARTILAGE AND BONE: Bone marrow edema is present within the anterior aspect of the lateral femoral condyle. There is an approximately 2 mm depression of the anterior aspect of the lateral femoral condyle with cortical irregularity and focal cartilage thinning compatible with an impaction fracture. Additional bone marrow edema is present within the posterior aspects of the bilateral tibial condyles. The cartilage of the tibiofemoral and patellofemoral compartments is otherwise intact.LIGAMENTS: A complete tear of the anterior cruciate ligament is present. The PCL is intact. A small amount of fluid is present surrounding the medial collateral ligament which remains intact. The lateral collateral ligament complex is intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
Complete tear of the ACL with associated bone contusions, lateral femoral condyle impaction fracture, grade 1 sprain of the MCL, and moderate joint effusion.