title: [Bone union of distracted region after limb lengthening].
abstract: OBJECTIVE
  To investigate the factors which affect the bone union of distracted region after limb lengthening, so as improve the curative effect and diminish the incidence of complication.
  
  
  METHODS
  To look up the latest literatures dealing with the bone union in limb lengthening, then review the procedure of osteogenesis and the affecting factors.
  
  
  RESULTS
  The osteogenesis of distracted region after limb lengthening is a sophisticated procedure. It can be affected by the velocity of lengthening, the period of lengthening, the site and method of osteotomy, the age etiology of patient.
  
  
  CONCLUSIONS
  The bone union of distracted region after limb lengthening can be facilitated by following factors: 1. the velocity of lengthening slower than 1.0 mm/day; 2. moderate delay in distraction; 3. axial shortening of distracted region; 4. micromovement stimulation.
authors.affiliation: First Surgery Department, People's Hospital of Liuzhou City, Liuzhou Guangxi, P. R. China 545001.
authors.forename: H Y
authors.initials: HY
authors.lastname: Liu
authors.forename: M Y
authors.initials: MY
authors.lastname: Wu
mesh_terms: D015502:Absorptiometry, Photon; D000367:Age Factors; D001852:Bone Lengthening; D001861:Bone Regeneration / Q000502:physiology*; D001842:Bone and Bones; D017102:Fracture Healing / Q000502:physiology*; D006801:Humans; D019857:Osteogenesis, Distraction; D013997:Time Factors