59 year-old female with left knee pain, concern for meniscal tear MENISCI: There is extrusion of the anterior horn of the medial meniscus with an underlying flap of meniscal tissue representing a displaced flap tear. The lateral meniscus is intact.ARTICULAR CARTILAGE AND BONE: There is complete loss of the articular cartilage along the weight-bearing portion of the medial femoral condyle and medial tibial plateau with underlying reactive marrow changes. There is otherwise intact articular cartilage apart from minimal articular cartilage degeneration along the medial patella facet.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: The quadriceps and patella tendons are intact.ADDITIONAL
1. Tear of the anterior horn of the medial meniscus with displaced flap underlying the extruded anterior horn.2. Complete loss of articular cartilage along the weight bearing portions of the medial tibiofemoral joint compartment3. Moderate joint effusion.