摘要
目的探讨CT扫描在下颈椎前路经椎弓根螺钉安全植入中的意义。方法取福尔马林浸泡尸体颈椎6具,16层螺旋CT扫描颈椎(C3~7),三维重建测量前路经椎弓根固定相关解剖学参数,根据扫描参数结果选择植入螺钉椎弓根,C形臂X线机透视定位下经前路植入椎弓根钉,CT扫描三维重建分析螺钉位置(根据Tomasino法评价植钉安全性)。结果测量6具尸体颈椎(C3~7),共60个椎弓根,其中有4个椎弓根宽度小于4.0 mm及1个椎弓根的进钉点太靠近椎体上终板而不能植入螺钉,经前路共植入椎弓根钉55枚。根据Tomasino法评价:在横断位Grade1:52枚,Grade2:2枚,Grade3:1枚;在斜矢状位Grade1:52枚,Grade2:3枚。结论术前个体化的CT扫描重建分析颈椎椎弓根形态为经前路颈椎椎弓根钉的安全植入提供保障。
Objective To investigate the value of spiral CT on cervical anterior transpedicular screw insertion. Methods The cervical pedicle （C3-7） parameters for anterior transpedicular fixation from six cadaveric specimens were measured under CT scan and three dimensionally reconstructed. Cervical anterior transpedicular screws were implanted into cadaveric pedicles on the basis of the measured parameters. The position of cervical anterior transpedicular screws was evaluated by CT and reconstructing images, followed by the safety evaluation of screws insertion using Tomasino＇s method. Resttits In all of 60 pedicles （C^-7） measured, 4 was too small （the width of the pedicle〈4.0 ram）, and 1 was too closed to the upper plate, to be fixed. 55 screws were implanted successfully. Tomasino＇s evaluation demonstrated that,, Grade 1, 2 and 3 were 52, 2, and 1 screws in axial plane, and 52, 2, and 3 screws in saggital plane respectively. Conchusions Preooerative soiral CT scan is a valuable evaluation for safe insertion of cervical anterior transDedicular screw.
出处
《中国临床解剖学杂志》
CSCD
北大核心
2011年第6期658-660,664,共4页
Chinese Journal of Clinical Anatomy
关键词
颈椎
前路
椎弓根螺钉
椎体切除术
CT
Cervical vetebrae
Anterior approach
Pedicle screw
Corpectomy
CT
