Reason: L knee pain, evaluate for meniscus tear MENISCI: There is globular intrasubstance increased signal intensity within the lateral and medial menisci suggestive of intrasubstance degeneration. However, we see no meniscal tear.ARTICULAR CARTILAGE AND BONE: There is severe loss of cartilage at the undersurface of the patella. There is also focal degeneration of articular cartilage at the anterior aspect of the medial trochlea. Articular cartilage of the femorotibial compartments appears normal for age.LIGAMENTS: ACL appears normal. PCL is thickened with intermediate signal intensity, which may reflect mucoid degeneration or partial thickness tearing. Collateral ligaments are intact. EXTENSOR MECHANISM: There is minimal increased signal of the proximal fibers of the patellar tendon, which may represent tendinosis, but this is equivocal. Insall Salvati ratio measures 1.4-1.5, indicating patella alta. Femoral trochlea subjectively appears slightly shallow.ADDITIONAL
1. Intrasubstance degeneration of the lateral and medial menisci without tear.2. Severe loss of articular cartilage along the undersurface of the patella with sparing of the femorotibial compartments.3. Moderate to large joint effusion.4. Thickening and increased signal intensity of the PCL with adjacent lobular intermediate to high signal intensity in the posterior aspect of the joint, which may represent mucoid degeneration of the ligament with adjacent synovitis or partial thickness tearing of the ligament if there is history of trauma.5. Other findings as above.