Abstract
We report on a patient who underwent gap arthroplasty and coronoidectomy followed by reconstruction with a dermis-fat graft and temporalis muscle and fascia flap for temporomandibular joint （TMJ） ankylosis. A 62-year-old woman was referred to our department because of limitation in mouth opening and left TMJ pain. Clinical examination revealed a 23-mm range of maximal mouth opening. A computed tomographic scan confirmed left TMJ bony ankylosis. After gap arthrotomy and coronoidectomy, the muscle with the fascia was interposed between the bony stumps, and dermis-fat was placed around the muscle graft and bony stumps.
As of 7 years after operation, magnetic resonance inaging showed that the interposed temporalis muscle and fascia flap and grafted fat had survived. A 35-mm range of motion was maintained with stable occlusion.
