9.2\ Sagittal Split Osteotomy

9.2.1\ Discussion

The sagittal split osteotomy is a commonly performed procedure for correcting maxillofacial deformities, such as mandibular hypoplasia or hyperplasia. The surgery consists of bilateral osteotomies through the mandibular ramus with either advancement or setback of the mandibular body

(Fig. 9.3). Once repositioned, the mandible is internally fixed using either position screws or plates and screws. Sagittal split osteotomies are sometimes combined with other types of maxillofacial procedures, such as the LeFort I osteotomy. Dysesthesia of the inferior alveolar nerve is one of the most common complications since the osteotomy is in the region of the inferior alveolar nerve. Facial nerve palsy and maxillary nerve pseudoaneurysm are rare complications of the sagittal split surgery.