Two cases of ankylosis of the temporomandibular joint (TMJ) after otologic and neurotologic surgery involving an approach through the temporal fossa are reported. The etiology is believed to be that of fibrous contracture within the temporalis muscle, which is incised during the procedure. If the possibility of this rare complication is anticipated, the immediate instigation of prophylactic jaw exercises and forced opening with tongue depressors can significantly limit morbidity. If the condition is allowed to become established, then surgical correction by coronoidectomy may be necessary.
1The Royal National Throat, Nose and Ear Hospital, Grays Inn Road, London, WC1X 8DA, England
2The National Hospitals for Nervous Diseases, Queen Square, London, WC1N 3BG, England.
3Reprint requests: Martin J. Porter, The Royal National Throat, Nose and Ear Hospital, Grays Inn Road, London, WC1X 8DA, England.