忆扩钉对旋转植骨块愈合过程中组织学变化的实验研究  

Experimental Research of Memory Expansion Screw for the Torsional Grafting Healing

作　　者：王卫东 梅芳瑞 

出　　处：《中华创伤杂志》1995年第6期338-340,共3页Chinese Journal of Trauma

摘　　要：采用３０只犬，分别于术后２、４、６、８、１０、１２周６个时相点观察旋转植骨块愈合过程中的组织学变化。结果发现忆扩钉组的愈合时间比对照组快２～４周。证明忆扩钉不仅对植骨块有确切的固定作用，可以防止植骨块滑脱，而且具有持续加压作用，使植骨块与椎骨紧密相贴，促进植骨块融合。本实验结果为临床应用忆扩钉内固定提供了科学依据。Thirty dogs' lumbar vertebrae are studied to imitate the clinical operation. By comparing the experimental changes of roentgenogram and histology in torsional grafting fusion with the control groups respectively at 2, 4, 6, 8, 10, 12 weeks after surgery. It was found that the time of grafting union in the experiments was faster 2-4 weeks than that of the control.This demonstrates that the Memory Expansion Screw not only has exact fixing effects on torsional grafting for preventing extrusion of the grafting, but also gives a sustained pressure that keeps the grafting close to the vertebral bodies to promote the grafting fusion. The study offerd a basic ground for clinical application of Memory Expansion Screw. (Original article on page 338)

关 键 词：脊椎 忆扩钉 组织学 

分 类 号：R687.32[医药卫生—骨科学]