37-year-old female with right knee pain. Assess for lateral meniscus tear. MENISCI: There is abrupt truncation of the inner half of the posterior horn of the lateral meniscus indicating a radial tear. The tear extends in a longitudinal fashion along the periphery of the posterior horn toward its root. The anterior horn and body appear intact. There is marked attenuation of the body and posterior horn of the medial meniscus indicating extensive tearing. The root of the medial meniscus is not clearly visible, also likely representing tearing. The anterior horn of the medial meniscus appears intact. Foci of low signal intensity within the medial gutter above the body of the meniscus may represent displaced meniscal fragments.ARTICULAR CARTILAGE AND BONE: There is a large full-thickness defect of the articular cartilage of the weightbearing portion of the medial femoral condyle measuring approximately 1.5 cm in diameter. There is mild edema type signal within the underlying subchondral bone. There is additional mild edema type signal abnormality within the proximal tibia which may reflect resolving contusion. There is minimal heterogeneity of the articular cartilage of the lateral compartment suggesting mild degeneration but no fluid-filled defect is evident. The articular cartilage of the patellofemoral compartment appears intact. LIGAMENTS: The ACL is indistinct likely representing a chronic tear with a few horizontal fibers noted along the tibial plateau. The PCL, MCL and LCL appear intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Lateral and medial meniscus tears as described above.2. Full-thickness defect of the articular cartilage of the medial femoral condyle.3. Chronic ACL tear and other findings as described above.