title: [Condylar positioning during mandibular orthognatic surgery].
abstract: Sagittal split osteotomy of the mandible is the most frequently used method in orthognatic surgery. Osteosynthesis was performed with wires in the 1970s. The instability of fixation allowed condyle movements and there was no problem of condylar positioning. The drawback of this technique was that it required a strict intermaxillary fixation for 6 weeks. Osteosynthesis evolved in the 1980s to a rigid and semi-rigid fixation, with no longer any need for an intermaxillary fixation. But accurately determining the condyle position in the fossa is essential when using a rigid fixation, because no spontaneous adaptation is possible. Moreover, an improper condyle positioning is known to increase short term skeletal relapse, inadequate corrections, and a high incidence of temporomandibular joint dysfunctions. Many solutions have been proposed to solve the problem of condylar positioning: manual positioning technique at osteosynthesis, and mechanical or computer assisted devices to control condylar positioning. The repositionable and adjustable miniplates have also been designed to improve condyle positioning, with the possibility of peroperative adjustment.
authors.affiliation: Service de chirurgie maxillo-faciale, CHU de Caen, avenue de la Côte-de-Nacre, 14000 Caen, France.
authors.forename: H
authors.initials: H
authors.lastname: Bénateau
authors.affiliation: Service de chirurgie maxillo-faciale, CHU de Caen, avenue de la Côte-de-Nacre, 14000 Caen, France.
authors.forename: A
authors.initials: A
authors.lastname: Chatellier
authors.affiliation: Service de chirurgie maxillo-faciale, CHU de Caen, avenue de la Côte-de-Nacre, 14000 Caen, France.
authors.forename: N
authors.initials: N
authors.lastname: Leprovost
authors.affiliation: Service de chirurgie maxillo-faciale, CHU de Caen, avenue de la Côte-de-Nacre, 14000 Caen, France.
authors.forename: S
authors.initials: S
authors.lastname: Ghezal
authors.affiliation: Service de chirurgie maxillo-faciale, CHU de Caen, avenue de la Côte-de-Nacre, 14000 Caen, France.
authors.forename: J F
authors.initials: JF
authors.lastname: Compère
authors.affiliation: Service de chirurgie maxillo-faciale, CHU de Caen, avenue de la Côte-de-Nacre, 14000 Caen, France. Electronic address: alexis.veyssiere@hotmail.fr.
authors.forename: A
authors.initials: A
authors.lastname: Veyssière
mesh_terms: D006801:Humans; D019248:Jaw Fixation Techniques / Q000295:instrumentation; D008334:Mandible / Q000601:surgery*; D008335:Mandibular Condyle / Q000601:surgery*; D056948:Orthognathic Surgical Procedures / Q000295:instrumentation / Q000379:methods*; D010027:Osteotomy / Q000295:instrumentation / Q000379:methods
keywords: Condyle; Mandibulaire; Mandibular; Osteotomy; Ostéotomie; Position