Abstract
The posttraumatic complications of maxillofacial fractures related to maxillofacial function and facial deformity include nonunion, malunion, malocclusion and facial asymmetry.
We report a case of malunion and malocclusion following inadequate open reduction of unilateral subcondylar fracture successfully treated by sagittal splitting ramus osteotomy （SSRO）. A female in her 70s suffered unilateral subcondylar and contralateral mandibular angle fractures after falling while walking. Both fractures were openly reduced and internally fixed at another hospital. However, the treatment was insufficient and two months later, she presented in our department with the chief complaint of significant malocclusion. Clinical examination and computed tomography revealed severe open bite on the left molars with malunion of the right subcondyle due to lateral override of the fractured proximal fragment. We performed SSRO on the right side to correct the malocclusion. Revision surgery provided satisfactory results with stable occlusion and maxillofacial function.
