40-year-old female with right knee pain after right knee dislocation. MENISCI: The medial and lateral meniscus appear intact.ARTICULAR CARTILAGE AND BONE: There is edema type signal abnormality within the anterior aspect of the medial femoral condyle consistent with contusion. No findings to suggest an acute fracture. No full-thickness or near full-thickness articular cartilage defects are identified.LIGAMENTS: There is complete rupture of the ACL. Increased signal abnormality within the proximal and midsubstance fibers of the PCL suggesting complete rupture. There is increased signal abnormality and indistinctness of the meniscofemoral component of the deep portion of the MCL, suggesting a tear. There is also increased signal abnormality between the medial meniscus and superficial band of the MCL.EXTENSOR MECHANISM: There is increased signal abnormality about an indistinct medial retinaculum, suggesting complete rupture. The extensor mechanism appears intact. ADDITIONAL
1. Complete rupture of the ACL and PCL. Findings suggestive of tearing of the deep portion of the MCL.2. Bone contusion of the medial femoral condyle and rupture of the medial retinaculum without evidence of acute fracture.3. Other findings as described above.