摘要
目的:探讨枢椎椎弓根螺钉固定的可行性,为临床应用提供依据。方法:利用CT扫描50例干燥枢椎标本,测量枢椎椎弓根上缘、下缘和中部的宽度以及椎弓根的内、外缘高度。结果:椎椎弓根的上缘宽度为(7.67±1.33)mm,所有标本均大于5.0mm;中部宽度平均(5.75±1.59)mm,19%小于5.0mm;下缘宽度平均(3.87±1.09)mm,84%小于5.0mm。枢椎椎弓根的缘高度平均(5.66±1.43)mm,40%小于5.0mm;内缘高度平均(8.80±0.74)mm,所有标本均大于5.0mm。结论:国人中约81%的患者适合进行枢椎椎弓根螺钉固定,术前CT扫描可明确个体的置钉可行性。
Objective: To evaluate the anatomic possibility of C2 pedicle screw placement by computed tomography measurements. Methods: Fifty dry axis specimens were underwent CT scan to measure anatomic data dealing with C2 pedicle screw placement technique, including the width of superior surface, mid-portion and inferior surface of the C2 pedicle, the height of internal and external surface of the C2 pedicle. Results: The superior width of C2 pedicle was averagely about 7.67±1.33 mm, larger than 5.0 mm in all specimens; the mean mid-portion width was 5.75±1.59 mm, 19% of specimens were lower than 5.0 mm; the averaged inferior width was 3.87±1.09 mm, 84% of specimens were lower than 5.0 mm. The mean external height of C2 pedicle was 5.66±1.43 mm,40% of specimens were lower than 5.0 mm; the internal height of C2 pedicle averaged 8.80±0.74 mm, and larger than 5.0mm in all specimens. Conclusions: It is quite possible to place pedicle screws on axis, and the present screw fixation technique was suitable to 81% Chinese patients, while preoperative CT scans could judge the anatomic suitability of individual patient.
出处
《中国临床解剖学杂志》
CSCD
北大核心
2007年第5期518-520,共3页
Chinese Journal of Clinical Anatomy
基金
广东省自然科学基金团队项目(20023001)