Research on internal curvilinear traction device for reconstruction of segmental defect of mandible
- VernacularTitle:修复下颌骨缺损的内置式弧形牵引器的研制
- Author:
Benlan CHEN
- Publication Type:Journal Article
- Keywords:
traction osteogenesis;
curvilinear tractor;
mandible;
goat
- From:
Chinese Medical Equipment Journal
1989;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Reconstruction of the segmental defect of mandible is difficult. The research is to develop a kind of internal curvilinear traction device to reconstruct an arc-shape bone. At first, a 35 mm and 45mm segmental defects are made by operation on one mandibular of two goats respectively,and the transport bone is created by osteotomy, then the tractors are settled. The transports of bone begin after a postoperative lag period of 7 days at a rate of 1mm/d and a frequence of 1 time/d. The regeneration of bone is evaluated radiographically. After two-week fixation, X-ray examination shows that an arc bone appears in one of the goats and no bone generates in the other. At last, the animals are sacrificed 2 months after the operation and its mandibiles are harvested to observe reconstruction results of the defect. The results are the same as that by X-ray examination, and the length of the new bone is 35mm. So the distractor plays a role in the reconstruction of mandibile, but needs improving.
