Tehran University of Medical Sciences Journal of Craniomaxillofacial Research 2345-5489 6 3 2020 02 08 129 131 Alireza Parhiz Department of Oral and Maxillofacial Surgery, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran. Hamid Mojtahedi Department of Oral and Maxillofacial Surgery, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran. 2019 12 30 2020 01 10 Today bilateral sagittal split osteotomy technique is one of the main surgical methods used in mandibular deformities surgical correction. Since, the osteotomy design has an important role in decreasing BSSO complications, we developed a technique which restrict the osteotomy points to posterior medial ramus cut and anterior vertical cut in widely used hunsuck modification for decreasing the complications. Keywords: Sagittal split ramus osteotomy; Orthognathic surgery; Skeletal deformity. https://jcr.tums.ac.ir/index.php/jcr/article/view/305 https://jcr.tums.ac.ir/index.php/jcr/article/download/305/273