An externally mounted distraction osteogenesis device used in plastic surgery for custom-made midface osteotomies for the correction of severe hypoplasia. The distraction device is composed of fixed and adjustable components upper fixed component is attached to left and right zygomatic bone by bone screws lower fixed component is composed of force transfer members engaging a rigid intraoral splint secured to teeth of the patient. A vertical bar, spindle units and distraction screws are adjustable connecting fixed components, applaying traction to facial bones.Linvention concerne un dispositif à ancrage sur os zygomatique par vis de traction de chaque côté et à fixation sur os frontal par vis unique. La traction est appliquée sur les maxillaires par la dentition au moyen dune attelle intraorale rigide. Le dispositif comprend: un cadre principal réglable qui comprend cinq segments, une barre verticale, des unités de broche, des vis de distraction.
