20-year old female with history of ACL repair now with laxity on exam. MENISCI: The menisci are intact.ARTICULAR CARTILAGE AND BONE: Postsurgical changes from prior ACL reconstruction with tunnels in the distal femur and proximal tibia. There is bone marrow edema about the posterior tibial plateau and lateral femoral condyle compatible with contusions related to posterior subluxation of the femur relative to the tibia. The articular cartilage is unremarkable.LIGAMENTS: There is intermediate signal abnormality of the remaining superior ACL fibers with complete disruption of the reconstructed anterior cruciate ligament. The PCL, MCL, and LCL complex are intact.EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1.Postsurgical changes of prior ACL reconstruction with tear of the ACL graft.2.Contusions compatible with posterior subluxation of the femur relative to the tibia.3.Small joint effusion.