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
For a 8 year old child with TMJ ankylosis, the treatment of choice is 
Select and explain. 
A. Gap arthroplasty, B. Condylectomy, C. Gap arthroplasty with costochondral grafting, D. Treatment not required
C: Gap arthroplasty with costochondral grafting
Answer: C: Gap arthroplasty with costochondral grafting 
Explanation: None