43-year-old female with knee pain for months with sharp pain and catching and giving out with stairs, fast walking and twisting. History of prior lateral release and scope and history of arthritis. MENISCI: There is a complex tear of the posterior horn of the medial meniscus with both horizontal and vertical components. The anterior horn of the medial meniscus appears normal. The lateral meniscus appears normal.ARTICULAR CARTILAGE AND BONE: There is subchondral bone marrow edema within the medial femoral condyle and medial tibial plateau compatible. There is generalized thinning of the articular cartilage along the medial femoral condyle and medial tibial plateau with areas of full-thickness intermediate signal intensity defects extending to the subchondral bone with associated bone marrow edema. There is generalized thinning of the articular cartilage of the patella.LIGAMENTS: There is edema surrounding the medial collateral ligament compatible with sprain. The lateral collateral ligament appears normal. The anterior and posterior cruciate ligaments appear normal. EXTENSOR MECHANISM: The extensor mechanism appears normal.ADDITIONAL
1. Complex tear of the posterior horn of the medial meniscus with both vertical and horizontal components.2. Subchondral bone marrow edema within the medial femoral condyle and medial tibial plateau. There is a moderate joint effusion about the knee.3. Medial collateral ligament sprain.4. Articular cartilage thinning and degeneration as described above.