计算机导航引导下经皮置入骨盆及髋臼拉力螺钉技术的应用研究  

Computer-assisted percutaneous pelvic and acetabulum lag screw placement

作　　者：穆卫东[1] 许世宏[1] 周东生[1] 贾堂洪[1] 王甫[1] 

机构地区：[1]山东大学附属省立医院骨科,济南250021

出　　处：《中华创伤杂志》2010年第11期986-990,共5页Chinese Journal of Trauma

基　　金：山东省自然科学基金资助项目（Z2008C17）;山东省医约卫生科研资助项目（2007HW099）

摘　　要：目的 计算机辅助导航和传统透视引导下,在骨盆标本上模拟手术中经皮空心拉力螺钉置入操作,评估计算机辅助导航技术的准确性及实用性.方法 将6具国人骨盆干性标本随机分为三组,分别采用三种不同的引导技术即传统C形臂透视技术、二维及Iso-C3D三维导航引导下,模拟手术过程在三组骨盆标本的S1、S2两侧椎弓根、双侧髋臼前柱、双侧髋臼后柱和耻骨联合内共置入54枚空心螺钉.比较不同组间螺钉置入的准确性及每枚螺钉置入所需平均操作时间和平均放射时间.结果 三种引导方式中螺钉置入的准确率、所需平均操作时间及平均放射时间差异有统计学意义（P＜0.01）,其中,Iso-C3D三维导航组准确率最高,每枚螺钉的平均操作时间最短,传统透视组的平均操作时间及放射时间最长,二维导航组所需放射时间最短.结论 Iso-C3D三维导航是目前手术导航技术中最准确、最快捷的引导技术.二维导航或Iso-C3D三维导航可以明显减少手术中的放射量.Objective To simulate the process of lag screw insertion on intact pelvises under guidance of conventional fluoroscopes or 2D and Iso-C3D computer-assisted navigations and evaluate the accuracy and practicability of the computer-assisted navigation. Methods Six dried intact adult pelvic specimens were selected and divided into three groups randomly. A total of 54 hollow screws were placed in bilateral pedicles of S1 and S2, anterior column of bilateral acetabulum, anterior column of bilateral acetabulum and pubic symphysis of intact adult dried pelvic specimens of three groups under guidance of conventional fluoroscopy, 2D and Iso-C3Dcomputer assisted navigations, respectively. The accuracy of the screw positions, the average operating time of each screw insertion and the average time of radiation exposure during the insertion of each screw were compared among three groups. Results There were significant differences in the accuracy of the screw positions, the average operating time and the average time of radiation exposure among three groups （P〈0.01）. The navigation with Iso-C3D appeared to provide the highest accuracy and the shortest operating time of all guidance techniques. The mean operating time and the average time of radiation exposure of the conventional fluoroscope were the longest among three groups. The average time of radiation exposure of the 2D computer-assisted navigation was the shortest.Conclusions Iso-C3D computer-assisted navigation is the most accurate and expeditious means of all guidance techniques. The time of radiation exposure can be significantly reduced by both 2D and Iso-C3D computer-assisted navigations.

关 键 词：骨盆 骨折固定术 内 外科手术 计算机辅助 

分 类 号：R686[医药卫生—骨科学]