title: The quadrangular osteotomy revisited.
authors.forename: E E
authors.initials: EE
authors.lastname: Keller
mesh_terms: D006801:Humans; D008437:Maxilla / Q000601:surgery; D009915:Orbit / Q000601:surgery; D010027:Osteotomy / Q000379:methods; D019340:Osteotomy, Le Fort / Q000145:classification / Q000379:methods*