title: [Modifications of Lefort I osteotomy. Pterygomaxillary disjunction by an inferior rotation of the maxilla].
abstract: This article reviews some of the complications associated with the use of a chisel to achieve separation of the pterygomaxillary region during the Lefort I osteotomy. A modification of this surgical procedure is proposed whereby no chisel is used to complete the maxillary disjunction. A series of more than 200 consecutive Lefort I osteotomies using this technique confirms the value of this modification.
authors.affiliation: Department of Oral and Maxillo-facial surgery, Dalhousie University, Halifax, NS, Canada.
authors.forename: D S
authors.initials: DS
authors.lastname: Precious
authors.forename: D
authors.initials: D
authors.lastname: Ricard
mesh_terms: D006801:Humans; D007431:Intraoperative Complications / Q000517:prevention & control; D008437:Maxilla / Q000601:surgery*; D008440:Maxillary Fractures / Q000517:prevention & control; D010027:Osteotomy / Q000295:instrumentation / Q000379:methods*; D013100:Sphenoid Bone / Q000601:surgery*
vernacular_title: Modifications de l'ostéotomie de Lefort I. Disjonction ptérygo-maxillaire par bascule inférieure du maxillaire supérieur.