17-year-old female with history of right knee instability. Evaluate for ACL tear. MENISCI: Intrasubstance signal is seen in the anterior horn of the lateral meniscus appears to be extending to the articular surface compatible with a radial meniscal tear. The medial meniscus demonstrates some increased signal in the posterior horn, however this does not extend to the articular surface and is unchanged from the prior exam, and the medial meniscus appears morphologically intact.ARTICULAR CARTILAGE AND BONE: Bone marrow signal abnormalities are seen in the lateral femoral condyle, the lateral posterior tibial plateau, and, to a lesser degree at the medial posterior tibial plateau and are compatible with bone contusionsLIGAMENTS: The anterior cruciate ligament is irregular and appears to be disrupted compatible with the tear. Posterior cruciate ligament and the medial and lateral collateral ligaments are are intact. EXTENSOR MECHANISM: Extensor mechanism is intact.ADDITIONAL
1.ACL tear as described above.2.Lateral meniscal tear as described above.3.Suprapatellar joint effusion.