Right knee pain. MENISCI: There is a large complex tear of the periphery of the posterior horn of the lateral meniscus, consisting predominantly of a complete longitudinal tear ("Wrisberg rip") extending into the body of the meniscus along its undersurface. There are punctate foci of increased signal intensity within the anterior horn of the lateral meniscus, near its root, likely representing normal variation. There is also a large complete longitudinal tear through the peripheral fibers of the posterior horn of the medial meniscus that extends into the body of the meniscus.ARTICULAR CARTILAGE AND BONE: There is mild depression of the articular surface of the lateral femoral condyle just above the anterior horn of the lateral meniscus with underlying edema representing a mild impaction fracture. There is also mild edema within the lateral tibial plateau. We see no fluid-filled articular cartilage defects.LIGAMENTS: The anterior cruciate ligament is poorly defined indicating a full-thickness tear. The PCL appears intact. The MCL and LCL appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. ACL rupture with associated mild lateral femoral condyle impaction fracture. The edema of the associated bone contusions is relatively mild, suggesting that this may be a subacute or chronic injury.2. Tears of the posterior horn of the medial and lateral menisci as described above.