title: [Treatment of distraction osteogenesis in the patients of obstructive sleep apnea-hypopnea syndrome with micrognathia].
abstract: OBJECTIVE
  To apply the treatment of distraction osteogenesis(DO) to obstructive sleep apnea-hypopnea syndrome(OSAHS) patients with croniomaxillofacial deformities.
  
  
  METHODS
  All 46 OSAHS patients with micrognathia are had polysomnography(PSG) study and cephalometric analysis. Their age from 4 to 18 years old, the mean age is 11.4. The number of temporal mandibular joint (TMJ) ankylosis with micrognathia, micrognathia; 1st & 2nd bronchial arch syndrome and crouzon syndrome patients were 32, 9, 2 and 3 respectively. All were treated with DO. Maxilla or mandible was advanced from 5 to 35 micrometers; the mean advanced distance is 18.34 mm. They were all revaluated by PSG and cephalometric analysis postoperatively.
  
  
  RESULTS
  All patients have good respond to the treatment. They have a better appearance and the narrow upper airway was enlarged remarkably, their AHI drop from 66.31 +/- 14.74 pre-operately to 3.16 +/- 1.70 pro-operately, and minimal posterior airway space(PAS) from (5.48 +/- 2.76) mm to (9.97 +/- 2.05) mm. There is remarkable difference (P < 0.001).
  
  
  CONCLUSIONS
  DO is a good method for the patients of OSAHS with micrognathia.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D019465:Craniofacial Abnormalities / Q000150:complications / Q000628:therapy*; D005260:Female; D006801:Humans; D008297:Male; D008844:Micrognathism / Q000150:complications / Q000628:therapy*; D019857:Osteogenesis, Distraction; D020181:Sleep Apnea, Obstructive / Q000209:etiology / Q000628:therapy*