Abstract: Objective: To analyze the reasons and the characteristics of postoperative severe complications for the failure treatment of condylar fracture, and to investigate the causes and appropriate precautionary methods for the condylar fracture surgical treatment. Methods: A total of 13 cases were collected, from January 2012 to November 2017 in the First Affiliated Hospital of Xinjiang Medical University, and the reasons for complications and treatments were analyzed. Results: In these cases, there were 2 cases with postoperative infection, 5 cases with occlusion disorders, 4 cases with screws loosen, 1 case with plate broken, 9 cases with limitation of mouth opening, and 3 cases with facial asymmetrical deformity. The main reasons for the failure of treatment included: (1) insufficient preoperative evaluation; (2) improper internal fixation materials, methods and sites, inappropriate stress concentration; (3) rejection of short-term intermaxillary fixation; (4) the poor compliance of patients. Conclusion: It is important to master the principle and right methods of condylar fracture treatment.

Key words: Condylar fracture, Treatment failure, Postoperative complications, Precautionary methods