title: [Mandibular distraction combined with orthognathic techniques for the correction of adult hemifacial microsomia].
abstract: OBJECTIVE
  To study the combination of Mandibular distraction and orthognathic techniques for the reconstruction of adult hemifacial microsomia.
  
  
  METHODS
  The three-dimensional CT reconstruction data was used with Mimics for preoperation design. The osteotomy location, distraction vector, distraction distance were decided before operation with a surgical guider. At the first stage, internal distractor was implanted after ostetomy through an extra-oral approach. The distraction begun 5-7 days after operation with a frequency of 1 mm/day. After distraction, the distractor was maintained for 3-6 months. At the second stage, the distractor was removed. Le Fort I osteotomy was performed in order to correct the cross-bite and improve the facial contour. Usually, bone graft was inserted into the gap after Le Fort I osteotomy. The genioplasty was also performed if necessary.
  
  
  RESULTS
  9 cases of adult hemifacial microsomia with severe mandibular deviation were treated. The facial asymmetry were improved greatly. 1 patient suffered an wound infection in the maxillary region after Le Fort I osteotomy and healed uneventfully with wound irrigation.
  
  
  CONCLUSIONS
  Mandibular distraction combined with orthognathic surgery is an effective procedure for adult hemifacial microsomia with complicated mandibular hypoplasia.
authors: Lei
authors: L
authors: Shi
authors: Lai
authors: L
authors: Gui
authors: Lin
authors: L
authors: Yin
authors: Xiao-Jun
authors: XJ
authors: Tang
authors: Hong-Yu
authors: HY
authors: Yin
authors: Bin
authors: B
authors: Yang
authors: Ren-Kai
authors: RK
authors: Yang
authors: Zhi-Yong
authors: ZY
authors: Zhang
mesh_terms: D000328:Adult; D000368:Aged; D016025:Bone Transplantation; D005146:Facial Asymmetry / Q000601:surgery*; D006053:Goldenhar Syndrome / Q000601:surgery*; D006801:Humans; D008334:Mandible / Q000601:surgery*; D019857:Osteogenesis, Distraction / Q000379:methods*; D019340:Osteotomy, Le Fort / Q000379:methods