Abstract: Objective: To investigate the influencing factors on the treatment of intracapsular condylar fracture, and compare the clinical and radiographic outcomes between operative and conservative treatments of condylar fractures of mandible in children. Methods: Between January 2008 and October 2013, 78 patients with 104 sides of intracapsular condylar fracture diagnosed by panoramic and CT scan in the first Affiliated Hospital of Xinjiang Medical University were selected. All patients received MRI to check the presence or absence of injury and the position of TMJ disc. Follow up period ranged from 1 to 3 years. The clinical information and data of treatment outcome were collected and analyzed. Results: Radiological examination: The completely rehabilitative rate was 78.9% in the operation group, and 72.4% in the conservative group. No significant difference was found between two methods. The mandibular symmetry rate was 93.1% in the operation group, and 80.0% in the conservative group, no significant difference was found either between two groups. Clinical examination: The complications of operation treatment were significantly less than those of the conservative treatment (P<0.05). Both treatment methods showed high cure rate of condylar remodeling and functional recovery to intracapsular condyle fracture. Conclusion: Based on the present investigation, 1) the presence or absence of obvious shortening of mandibular ramus 2) the presence or absence of injury and displacement of TMJ discs 3) the presence or absence of limited mouth opening and malocclusion 4) the presence or absence of attachment loss to lateral pterygoid have important influences on the treatment choice and plan for the intracapsular condylar fracture.

Key words: Mandibular fractures, Intracapsular condylar fracture, Children, Treatment , Influence factor