Use positional screws for Le Fort I osteotomy fixation: technical note
Related Experiment Video
Updated: Mar 3, 2026

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models
Published on: October 9, 2014
Rafael Linard Avelar1, Maykel Sullyvan Marinho de Souza2, Eduardo Costa Studart Soares2
1Department of Oral and Maxillofacial Surgery, College of Dentistry, Center University Unichristus, Fortaleza, Ceará, Brazil. Rafael.linard@hotmail.com.
Abstract:
In recent years, several studies related to fixation systems have been published, but few suggest any variations of the Le Fort I osteotomy technique, and the use of plates and screws placed along the canine and zygomatic pillar are common. The 20-year-old patient with Crouzon syndrome presented with severe hypoplasia of the maxillary, mandibular prognathism, and class III facial pattern. The patient underwent orthognathic surgery and high Le Fort I osteotomy with the fixation of eight positional screws. The aim of this paper is to describe a different technique for the fixation in high maxillary osteotomies, which can be used in specific cases.
Related Concept Videos
Frictional Forces on Screws
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
Self-Locking Screw
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.

