23-year-old female with right knee instability. Evaluate for right knee ACL tear. Somewhat suboptimal examination secondary to patient motion artifact.MENISCI: There is linear increased signal abnormality within the posterior horn of the lateral meniscus which extends to the femoral articular surface consistent with a small horizontal tear (image 22; series 701). There is also linear increased signal abnormality which extends to the femoral and tibial articular surfaces within the anterior horn of the lateral meniscus consistent with a radial tear (image 17; series 601). The medial meniscus appears intactARTICULAR CARTILAGE AND BONE: There is subchondral signal abnormality within the posterior lateral tibial plateau underlying the posterior horn of the lateral meniscus consistent with a bone contusion. No full-thickness or near full-thickness articular cartilage defects are identified.LIGAMENTS: The proximal and mid substance fibers of the ACL are indistinct with increased signal abnormality on fluid sensitive sequences suggesting a tear. The PCL appears intact. The LCL and MCL appear intact.EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Tearing of the ACL.2. Tearing of the lateral meniscus and bone contusion as described above.