Knee pain. Heard popping this morning Severe degenerative changes are observed largely the medial compartment however changes are tricompartmental. On bone narrowing, sclerosis and osteophytes with subchondral cyst are noted. A large suprapatellar calcification and moderate effusion are also observed suggesting free loose body within the joint, this ovoid finding measures over 3 cm in length. No immediate superimposed acute abnormality, however MRI may be needed if internal derangement is now suspected.
Severe osteoarthritic changes with suspected loose body and effusion, however no superimposed acute osseous abnormality observed