摘要
目的：探讨计算机导航辅助置入颈椎椎弓根螺钉的准确性和产生偏差的原因。方法：30例下颈椎疾患手术患者，导航辅助下置入172枚颈椎（C3-C7）椎弓根螺钉，术后行X线和CT检查。横断位测量螺钉中线与椎弓根内壁的相对位置以及与椎体中线的角度；矢状位测量螺钉中线与椎弓根上壁的相对位置以及与椎体上缘的角度。对导航图像数据与术后CT数据进行回归分析。结果：2枚螺钉穿出椎弓根上壁，3枚螺钉穿出椎弓根外壁入椎动脉孔。导航图像数据与术后CT数据呈正直线相关。结论：计算机导航辅助置入颈椎椎弓根螺钉具有较高的准确性，术中漂移是置钉偏差的原因。
Objective ：To investigate the accuracy of computer-assisted cervical pedicle screw installation and the reason of screw malposition. Methods： A total of 172 cervical pedicle screws were installed by computer-assisted navigation for 30 patients with lower cervical spinal diseases, All the patients were examined by X-ray and CT after operation. Screw＇s position and direction were measured on the sagittal and transectional images of intraoperative navigation and post-operative CT. Then linear regression analysis was taken between navigational and post-operative CT＇s images. Results： Two screws perforated the upper pedicle wall, 3 perforated the lateral pedicle wall. There was a positive linear correlation between navigational and post-operative CT＇s images. Conclusion： Computer-assisted navigation can provide the high accuracy of cervical pedicle screw installation and excursion phenomenon is reason of screw malposition.
出处
《军事医学科学院院刊》
CSCD
北大核心
2009年第2期157-160,共4页
Bulletin of the Academy of Military Medical Sciences
关键词
计算机辅助导航
颈椎
椎弓根螺钉
computer-assisted navigation
cervical vertebrae
vertebral pedicle screw
