Right knee pain, evaluate for chronic infection versus osteoarthritis in patient with chronic recurrent cellulitis. The patient's knee would not fit into the standard high definition knee coil, so a torso coil was used instead which results in slightly suboptimal image quality.MENISCI: There is a full-thickness radial tear of the posterior horn of the medial meniscus at/near its root. Globular signal intensity within the remaining posterior horn and body of the medial meniscus indicates intrasubstance degeneration. The anterior horn of the medial meniscus appears intact. The lateral meniscus appears intact.ARTICULAR CARTILAGE AND BONE: There is severe loss of articular cartilage along the patella with much of the lateral facet devoid of cartilage. There is also loss of articular cartilage of the femoral trochlea particularly along the inferior aspect of the medial facet. There is full-thickness cartilage loss along the weightbearing portion of the medial femoral condyle with edema type signal in the underlying subchondral bone. There is subjective thinning of the cartilage of the medial tibial plateau with associated mild degenerative subchondral signal abnormality. There is subjective thinning of the articular cartilage of the lateral tibiofemoral compartment. Small tricompartmental osteophytes are present.LIGAMENTS: The cruciate and collateral ligaments are intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1.Osteoarthritis as described above.2.Medial meniscal tear.3.Joint effusion and soft tissue edema without specific imaging features of abscess or osteomyelitis.