Facial nerve palsy following bilateral sagittal split ramus osteotomy for setback of the mandible.

Sagittal split osteotomy of the mandible is frequently used to correct dentofacial deformities. Postoperative facial palsy is one of the most serious complications because it reduces the quality of life and significantly reduces social interaction. The case of a 22-year-old patient who underwent sagittal split setback osteotomy is described. The medical records, perioperative photographs and literature were reviewed in detail to collect data on the clinical course, treatment and outcomes.