Background: The distraction osteogenesis (DO) technique has been widely applied in the managements of bone defects, limb deformities and fracture non-unions, and has cured many difficult cases.

• 背景:利用牵拉成骨技术治疗骨缺损已取得了不错的疗效,但存在矿化慢、再骨折、治疗时间长等不足。