76-year-old male with right knee pain. MENISCI: There is increased signal abnormality within the posterior horn of the lateral meniscus which extends to the tibial articular surface consistent with a horizontal tear. The anterior horn appears intact.There is linear branching signal abnormality and deformity of the posterior horn of the medial meniscus with extension of the signal abnormality to the tibial and femoral articular surface consistent with complex degenerative tearing which extends into the body of the meniscus. There is medial extrusion of the body of the meniscus. There is globular increased signal abnormality within the anterior horn of the meniscus consistent with intrasubstance degeneration.ARTICULAR CARTILAGE AND BONE: There is full-thickness articular cartilage degeneration along the anterior aspect of the lateral femoral condyle with underlying degenerative subchondral signal abnormality. There is a focal full-thickness articular cartilage defect along the anterior aspect of the medial femoral condyle with underlying subchondral signal abnormality. There is subjective thinning of the articular cartilage of the medial tibiofemoral compartment. There is near full-thickness articular cartilage degeneration along the weightbearing surface of the medial femoral condyle and medial tibial plateau. There is full-thickness articular cartilage degeneration along the medial facet of the patella with underlying subchondral signal abnormality. There is near full-thickness articular cartilage degeneration affecting the lateral facet of the patella.LIGAMENTS: The cruciate ligaments appear intact. There is thickening and intermediate signal abnormality within the proximal fibers of the lateral collateral ligament proper which may reflect prior injury or sprain. The MCL appears intact. EXTENSOR MECHANISM: The extensor mechanism appears intact.ADDITIONAL
1. Tearing of the medial and lateral meniscus as described above. 2. Full-thickness articular cartilage degeneration. 3. Loose bodies within the joint and within a Baker's cyst as described above.