ABSTRACT
<p><b>OBJECTIVE</b>To analyze the clinical feature of temporomandibular joint (TMJ) ankylosis and to investigate the advantage and disadvantage of all kind of surgery methods of TMJ ankylosis for supplying references to the treatment of TMJ ankylosis.</p><p><b>METHODS</b>Aetiology, sex, age at time of treatment, clinical features, radiographic findings, surgical treatment was reviewed and analyzed.</p><p><b>RESULTS</b>Trauma (66.86%, n = 117) and infection (24.57%, n = 43) were the primary causes of TMJ ankylosis. The 10 approximately 19 years age group (44.57%, n =78) occupied the highest frequency in five age groups, one hundred and fourteen (65.14%, n = 114) of the patients presented with lateral ankylosis. They were carried out different surgery method according to their difference of age, aetiology, and so on.</p><p><b>CONCLUSIONS</b>The person at 10 approximately 19 years old had the more feasibility of TMJ ankylosis than others. Trauma was the commonest cause of ankylosis. Different surgical method should be choose according to the different patient.</p>