Anatomic comparison of transarticular screws with latera mass screws in cervical vertebrae  

作　　者：刘观燚 徐荣明 马维虎 阮永平 孙韶华 黄雷 

机构地区：[1]Department of Orthopedics, Ningbo Sixth People＇sHospital, Ningbo 315040, China

出　　处：《Chinese Journal of Traumatology》2007年第2期67-71,共5页中华创伤杂志（英文版）

摘　　要：Objective： To compare the potential incidence of nerve root （ventral and dorsal ramus） injury caused by cervical transarticular screws and Roy-Camille lateral mass screws. Methods ： Insertion techniques with Klekamp transarticular screws and Roy-Camille lateral mass screws were respectively performed in this study. Each technique involved four specimens and 40 screws, which were inserted from C3 to C7. And 20-mm-long screws were used to overpenetrate the ventral cortex. The anterolateral aspect of the cervical spine was carefully dissected to allow observation of the screw-ramus relationship. Results ： The overall percentage of nerve invasion was significantly lower with Klekamp （45%） technique than with Roy-Camille （ 85 %） technique （ P 〈 0.05 ）. The largest percentage of nerve invasion for Klekamp transarticular screws was found at the dorsal ramus （25 % ）, followed by the ventral ramus （ 15 % ） and the bifurcation of the ventral dorsal ramus （ 5 % ）. The largest percentage of nerve invasion for Roy-Camille lateral mass screws was found at the ventral ramus （80 % ）. Conclusion ： The potential risk of nerve root invasion is lower with Klekamp transarticular screws than with Roy Camille lateral mass screws.

关 键 词：Cervical vertebrae Fixators  internal ANATOMY Transarticular screws 

分 类 号：F[经济管理]