Aetiology
- Injury: fracture, dislocation
- Repeated minor trauma
- Osteochondritis
- Degenerative process : small osteophytes break off
- Inflammation : small fibrinous loose bodies, but the inflammatory condition overshadows the loose bodies
- Synovial chondromatosis: occasionally occurs with multiple loose bodies
Clinically
- Patient complains of sudden locking and unlocking of the joint
- Symptoms of osteoarthritis may coexist
- X-Rays : nearly always reveal the loose bodies
Treatment
Symptomatic loose bodies should be removed