Restricted mouth opening is a common problem that presents to secondary care, and management depends on the primary cause. The most common differential diagnoses related to the temporomandibular joint (TMJ) include muscle spasm secondary to pain, anchored disc phenomenon, irreducible anterior disc displacement, rheumatoid diseases, and ankylosis. In this paper each is considered in turn.
Keywords: CT scan; MRI scan; TMJ anchored disc phenomenon; TMJ ankylosis; TMJ anterior disc displacement; TMJ arthroscopy; TMJ discectomy; TMJ pain; TMJ replacement; Trismus.
Copyright © 2012 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.