Experimental onlay implantation study on the cranium and face of rabbits: membranous versus endochondral bone
10.3760/j.issn:1009-4598.2001.02.007
- VernacularTitle:颅面部贴附植骨的实验研究
- Author:
Xinhai YE
1
;
Wenxiang GUANG
;
Shengzhi FENG
Author Information
1. Wenzhou Eye Hospital Wenzhou Medical College
- From:
Chinese Journal of Plastic Surgery
2001;17(2):87-89
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the absorption mechanism of free bone autograft and compare the advantages of the membranous and endocbondral bone autografts in rabbits. Methods Thirty adult male New Zealand white rabbits were randomly divided into two groups of fifteen each. Cranium graft or rib graft was implanted on each side of the snouts of the animal. The onlay grafts were harvested at 12th and 24th week. Then gross observation, volume measurement, histological study and scanning electron microscopical observation were performed.Results Cranium graft underwent less resorption than rib graft and the cortical bone underwent more resorption than cancellous bone. The number and arrangement of collagen fibrils at 24 weeks was more and better than that of 12 weeks. The collagen fibrils of the cranium graft were more numerous and regular than those of the rib graft at 12 weeks, but they were similar at 24 weeks. Although the grafts survived, their volume continued to decrease due to stress. Conclusions Membranous bone implanted on cranium of the rabbit is better than endochondral bone. Remodeling time of a cranium graft is shorter than a rib graft. The graft volume is also relating to stress.
