76 year female. Pain, swelling. Evaluate for ligamentous or meniscal injury. MENISCI: Complex branching signal abnormality in the anterior horn of the lateral meniscus extending into the body consistent with a complex tear. Globular signal abnormality in the posterior horn of the medial meniscus consistent with intrasubstance degeneration without a discrete tear.ARTICULAR CARTILAGE AND BONE: Small bone contusion in the lateral tibial plateau without a discrete linear component. Small tricompartmental osteophytes.Diffuse marked cartilage thinning of the lateral tibiofemoral compartment and moderate thinning of the medial tibiofemoral compartment without a focal defect. Focal partial thickness defect in the lateral facet of the patella.LIGAMENTS: High T2 signal within the ACL consistent with inflammatory change though there is no evidence of a tear as distinct fibers are still seen. PCL is intact. MCL and lateral ligamental complex are intact.EXTENSOR MECHANISM: Mild redundancy to the patellar tendon which remains intact, correlate with physical exam for patellar tendon laxity.ADDITIONAL
1. Complex tear in the anterior horn of the lateral meniscus extending into the body.2. Diffuse tibiofemoral compartment articular cartilage thinning, greater in the lateral compartment. Focal partial thickness cartilage defect in the lateral facet of the patella.3. Mild redundancy to an intact patellar tendon, correlate with physical exam for patellar tendon laxity.