Male 66 years old Reason: Left knee pain that is persistent and associated with clicking, evaluating for meniscal injury MENISCI: Mixed globular and linear signal within the posterior horn and body of the medial meniscus indicating intrasubstance degeneration. This signal extends in more vertical fashion to the tibial articular surface on several sagittal sequences indicating a large and probably complex undersurface tear. The anterior horn of the medial meniscus is relatively preserved. The lateral meniscus is intact.ARTICULAR CARTILAGE AND BONE: There is full thickness loss of cartilage along the anterior aspect of the lateral femoral condyle extending along the femoral trochlea with underlying subchondral cyst formation. There is mild superficial degeneration of the articular cartilage of the lateral tibial plateau posteriorly. There is full-thickness cartilage loss along the lateral facet of the patella superiorly with additional foci of cartilage loss and fissuring along the medial facet and median ridge with underlying subchondral cyst formation. There is focal full-thickness degeneration of cartilage of the medial facet of the femoral trochlea with underlying subchondral degenerative signal. There is also near full-thickness/full-thickness degeneration of the articular cartilage of the weight-bearing portion of the medial femoral condyle.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1. Degeneration and tearing of the medial meniscus as described above.2. Osteoarthritis as described above.3. Probable small cartilaginous loose bodies within the joint.4. Baker's cyst.5. Attenuation of the popliteal vein which would be better assessed with Doppler sonography to exclude occlusion/deep venous thrombus.