Temporomandibular joint (TMJ) ankylosis is a distressing and disabling disorder due to fibrous or osseous adhesions between the bony components of the joint1. It not only causes the inability to open the month but also alters the eating habits, speech ability, and cause malocclusion, facial disfigurement and psychological disorders2. The main cause is trauma in the childhood3. The treatment is early and aggressive surgical operation4. So many surgical procedures have been described but no one has been proven entirely satisfactory5.