Reason: Rule out osteosynovitis History: redness, swelling, pain There is a moderate joint effusion with synovial enhancement, indicating mild synovitis. There is no bone marrow edema to suggest osteomyelitis. There is mild edema of the subcutaneous fat anteriorly. Focal increased signal intensity within the articular cartilage of the patella just medial to the median eminence likely reflects full thickness degeneration with an underlying degenerative cyst. There is linear signal within the anterior horn of the lateral meniscus with extension to the tibial surface, which may represent a small undersurface tear but is of questionable significance. There is mild intrasubstance degeneration of the medial meniscus but no tear is seen. The cruciate and collateral ligaments are intact. The extensor mechanism is intact.
Joint effusion and mild synovitis. We see no radiographic findings to suggest osteomyelitis. Other findings as described above.