What is the most frequent complication that occurs in the temporomandibular joint (TMJ) as a result of rheumatoid arthritis?

Explanation

The primary complication seen in the TMJ due to rheumatoid arthritis is ankylosis, which involves the fusion of the joint leading to restricted movement. Other conditions like synovial chondromatosis, subluxation, and osteoarthritis are less commonly associated with rheumatoid arthritis in the TMJ.