Right knee pain, persistent. History of rheumatoid arthritis and sarcoid. Need to evaluate for synovitis from rheumatoid arthritis or other cause. Due to the patient's body habitus, the high-resolution knee coil could not be used. An alternative coil was used instead which results in slightly suboptimal image quality.There is mild intrasubstance degeneration of the menisci, but I see no discrete meniscal tear. Vertically-oriented intermediate signal intensity within the posterior horn of the lateral meniscus likely represents the interface with the meniscofemoral ligament of Wrisberg.There is marked degeneration of the articular cartilage of the patella, with the lateral facet essentially devoid of articular cartilage. There are small subchondral cysts. There is relatively mild degeneration of the articular cartilage of the femoral trochlea. Subjectively, the articular cartilage of the medial tibiofemoral compartment appears diffusely thinned. There is also a full-thickness defect of the articular cartilage of the lateral tibial plateau beneath the posterior horn of the lateral meniscus. I see no bone marrow edema or definite erosions.The cruciate and collateral ligaments are intact. There is a collection of peripherally-enhancing near-fluid signal intensity deep to the tibial collateral ligament suggesting a medial collateral ligament bursitis.The extensor mechanism is intact.There is a small amount of fluid within the joint extending posteromedially into a small Baker's cyst. There is enhancement of mildly thickened synovium indicating a mild synovitis.
1.Cartilage degeneration most severely affecting the patella.2.Mild synovitis.3.Collection of near-fluid signal intensity deep to the tibial collateral ligament suggesting a bursitis.4.Other findings as above.