Objective To develop a kind of internal curvilinear distraction device to creat an arc shape bone in the reconstruction of mandible defect. Method A 35 mm segmental defect in a goat was formed in the mandibular lateral position by operation, a transport bone was created by osteotomy, then the distractor was settled in. The transports of bone begin after a latenty period of 7 days at a rate of 1mn/d and a frequence of 1time/d. The regeneration of bone was evaluated radiographicany. The animal was sacrificed 2 months after the operation and its mandibile was harvested for observing the reconstruction results of the defect. Result New curvilinear bone formation was found in the second week of the consolidation phase. Conclusion The distractor plays a role in the reconstruction of mandibile, but it needs to be improved.
Beijing Biomedical Engineering
distraction osteogenesis curvilinear distraction device mandible