May Be Caused by

 Common

Abnormal mandibular condylar excursion

Abnormal mandibular condyle

Degenerative arthritis

Postsurgical changes

Posttraumatic changes

Rheumatoid arthritis

Temporomandibular joint syndrome

 Uncommon

Ankylosing spondylitis

Erosive arthritis

Fibrous dysplasia

Iatrogenesis

Infectious arthritis

Juvenile rheumatoid arthritis

Loose body

Neoplasm

Osteochondritis dissecans

Osteochondroma

Paget disease of bone

Pigmented villonodular synovitis

Psoriatic arthritis

TMJ steroid injections

 Rare

Gout