Introduction
Obstructive sleep apnea syndrome (OSA) is a disease in which apnea appears due to obstruction of the pharynx during sleep. Several reports have described that abnormal maxillofacial morphology such as small mandibular disorder is involved in the pathophysiology of OSA [1,2]. Furthermore, the influence of maxillofacial morphology is large in Asian races wherein the incidence of OSA due to obesity is low [3].
Here, we discuss about Le Fort I with horseshoe osteotomies (LF+HS) and mandibular distraction osteotomy for patients with small mandibular disorders with OSA and bilateral mandibular condyle resorption. After performing surgery (mandibular distraction osteogenesis, MDO) and then genioplasty (GP), we encountered a case in which OSA could be improved in addition to small mandibular disease and malocclusion.