title: [Management of complicated midface deficiencies with external distraction].
abstract: OBJECTIVE
  To treat complicated midface deficiencies with external distraction device.
  
  
  METHODS
  Four patients (one with acquired midface hypoplasia, two with Crouzon syndrome and one with Parry Romberg) with severe midface deficiencies underwent external distraction osteogenesis. After Le Fort III or Le Fort III plus I osteotomies were performed, the external distraction devices were activated on the 7th postoperative day with a rate of 1 mm per day. The distraction devices were removed after consolidation for 3 months.
  
  
  RESULTS
  All patients completed the distraction treatment. The distraction distance ranged from 10 to 14 mm. The appearance of all patients was significantly improved.
  
  
  CONCLUSIONS
  External distraction osteogenesis provides an effectively treatment for patients with severe and complicated midface deficiencies.
authors: Department of Oral and Maxillofacial Surgery, Stomatological College, Fourth Military Medical University, Xi'an 710032, China. bobin@fmmu.edu.cn
authors: Bin
authors: B
authors: Bo
authors: Yan-Pu
authors: YP
authors: Liu
authors: Li-Sheng
authors: LS
authors: He
authors: Jin-Long
authors: JL
authors: Zhao
authors: Hong-Tao
authors: HT
authors: Shang
mesh_terms: D000293:Adolescent; D002675:Child, Preschool; D003394:Craniofacial Dysostosis / Q000601:surgery*; D005145:Face / Q000002:abnormalities*; D005260:Female; D006801:Humans; D008297:Male; D019857:Osteogenesis, Distraction / Q000295:instrumentation; D015607:Stents; D055815:Young Adult