胶原膜引导骨再生的实验研究

目的观察胶原膜引导骨组织再生的形式,了解膜的理化特性、降解情况,并探讨引导性骨再生的机制。方法成年新西兰兔造成10mm桡骨缺损,实验组缺损处移植胶原膜及表面脱钙异体骨,对照组仅移植表面脱钙异体骨,并行X线、组织学及免疫组化检查。结果实验组移植区域存在明显骨膜反应,新骨增生明显,骨重建顺利,骨缺损完全修复。对照组移植区域由于纤维结缔组织的占据,新骨生长及成熟骨替代均较实验组延缓。结论胶原膜能有效地发挥阻隔与引导的作用,同时,膜管能使内、外源性BMP不断聚集,有效分布,BMP分布特征影响着组织细胞及骨愈合方式。

An experimental study of guided bone regeneration using collagen membrane

Objective The purpose of this study is to observe the property of guided bone regeneration by collagen membrane and investigate the mechanism of guided bone regeneration. Methods 10mm defect of radius was created bilaterally in adult New Zealand rabbits. The experimental group was transplanted by collagen membrane with surface decalcified bone allograft,and the control group was transplanted by surfaced decalcified bone allograft alone.Radiological and histological and immunohistochemical examinations were taken postoperatively. Results In the transplantation area of experimental group,distinctive periosteal reaction and new bone growth occurred remarkably,bone remodeling progressed successfully,and defects healed completely.But in the transplantation area of the control group,new bone growth and mature bone replacement were delay due to occupation of fibrous connective tissue. Conclusions Collagen membrance has an ability to block and guide.In addition,membrane tube can keep endogenic BMP with exogenic BMP greatly concentrating and effectively distributing. The distributive characteristic of BMP exerts an influence on cellular resources and pattern of bone healing.