61 year old female with right knee osteoarthritis. MENISCI: The medial meniscus is completely eroded due to extensive synovial proliferation as discussed below. The lateral meniscus is within normal limits. ARTICULAR CARTILAGE AND BONE: Extensive bony erosion throughout the joint from synovial proliferation, as well as complete loss of articular cartilage in the medial and patellofemoral compartments. LIGAMENTS: No significant abnormality noted. EXTENSOR MECHANISM: No significant abnormality noted.ADDITIONAL
Extensive synovial proliferation and underlying bony erosion, with destruction of the medial meniscus and medial/patellofemoral articular cartilage. Findings most likely represent PVNS. 