Reason: r/o meniscal tear History: pain. MENISCI: The medial meniscus is intact without discrete tear.There is diffuse degenerative tearing of the anterior and posterior horns of the lateral meniscus.ARTICULAR CARTILAGE AND BONE: Diffuse thinning of the articular cartilage of the medial compartment. Full-thickness thinning of the lateral compartment with bone-on-bone apposition and underlying moderate bone marrow edema and large subchondral cyst formation within the lateral femoral condyle and lateral tibial plateau. Fissuring and small foci of full-thickness defects within the patellofemoral compartment.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1.Severe lateral compartment osteoarthritis with associated medial meniscus degenerative tearing, full thickness articular cartilage thinning, subchondral edema and cyst formation. Mild to moderate patellofemoral and medial compartment osteoarthritis. 2.Loose body in the posterolateral aspect of the joint. 3.Moderate sized joint effusion with synovitis.4.Small Baker's cyst. 