This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Which of the following technique is used to treat fibrous ankylosis: 
Select and explain. 
A. Condylectomy., B. Gap arthroplasty., C. Interpositional gap arthroplasty., D. Any of the above.
A: Condylectomy.
Answer: A: Condylectomy. 
Explanation: None