21-year-old male with left knee pain after soccer injury on May 31, evaluate for ligamentous/meniscal injury MENISCI: There is a complex tear of the posterior horn and body of the medial meniscus, which includes a large longitudinal component that involves the posterior horn and body of the meniscus, as well as a horizontal component that extends into the peripheral fibers of the posterior horn. Furthermore, the peripheral third of the posterior horn near its root is absent, and we suspect the displaced fragment has flipped adjacent to the medial aspect of the PCL. The anterior horn of the medial meniscus is intact.There is undulation of the inner third of the anterior horn of the lateral meniscus, suggestive of a normal variant meniscal flounce. However, there is also suggestion of a partial thickness radial tear at the junction of the anterior horn and body of the lateral meniscus on axial image 17, series 3. The posterior horn of the lateral meniscus is intact.ARTICULAR CARTILAGE AND BONE: There is edema within the posterior aspect of the lateral tibial plateau, as well as the lateral femoral condyle just above the anterior horn of the lateral meniscus, representing bone contusions. There is also a slight depression of the articular surface of the lateral femoral condyle at the site of contusion, indicating a mild impaction fracture. Note is made of mild edema in the posterior aspect of the medial tibial plateau, likely also representing a contusion. We see no fluid -filled articular cartilage defect.LIGAMENTS: The ACL is poorly defined indicating full thickness rupture, presumably mid-substance. The PCL, medial collateral ligament, and lateral collateral ligament are intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
ACL rupture with complex tear of the medial meniscus and possible partial thickness radial tear of the lateral meniscus as described above.