68-year-old female with acute on chronic knee pain. MENISCI: Complex tear of the posterior horn of the medial meniscus which includes a complete vertical component just medial to its root attachment, and an additional vertical tear (perhaps a small oblique/flap tear) affecting the inner third of the posterior horn more medially. Additional signal abnormality within the body of the medial meniscus is compatible with intrasubstance degeneration. Mild extrusion of the body of the medial meniscus.Signal abnormality within the body of the lateral meniscus is compatible with intrasubstance degeneration. No meniscal tear is evident.ARTICULAR CARTILAGE AND BONE: There is tricompartmental osteoarthritis with diffuse full-thickness cartilage loss along the lateral facet of the patella and marked thinning of the articular cartilage of the lateral trochlea. Small subchondral cysts and foci of edema type signal are likely degenerative in etiology. Near full-thickness loss of articular cartilage along the medial plateau of the tibia and moderate degeneration of the articular cartilage with clefts noted along the medial femoral condyle. Relatively mild degeneration of the articular cartilage of the lateral tibiofemoral compartment.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1.Osteoarthritis most severely affecting the patellofemoral and medial tibiofemoral compartments.2.Complex tear of the posterior horn of the medial meniscus.3.Other findings as described above.