摘要
目的:评价对国人进行枢椎椎板螺钉固定的可行性,探讨进钉技术。方法:用电子游标卡尺和量角器在30例干燥枢椎标本上测量与进钉技术相关的解剖学数据,包括枢椎椎板的厚度,棘突根部、椎板和下关节突的高度。设定枢椎椎板螺钉的进钉点位于枢椎棘突中线两侧5mm,上位螺钉距椎板上缘5mm,对侧的下位螺钉距椎板上缘9mm,螺钉在棘突根部上下交叉进入对侧椎板,并于下关节突中心点出钉,测量上位和下位椎板螺钉的钉道长度和进钉角度。结果:枢椎椎板上缘、中部、下缘的厚度分别是3.02mm、5.91mm和5.59mm;枢椎棘突根部、椎板和下关节突中部的高度分别是12.40mm、12.95mm、14.03mm;上位和下位椎板螺钉的平均长度分别是25.41mm和27.39mm;上位螺钉前斜26.4°,下斜7.6°;下位螺钉前斜30.1°,上斜1.4°。结论:对国人进行枢椎椎板螺钉固定在解剖学上是可行的,该方法可作为传统枢椎后路螺钉固定技术的补充。
Objective：To evaluate the possibility of the placement of C2 laminar screw on Chinese people. Method：With the help of an electronic digital caliper and a goniometer,30 dry axis specimens were collected to measure anatomic data associated with screw placement including the thickness of the C2 laminar,the height of C2 spinous process,laminar and inferior facet process.The anchoring point of the C2 laminar screws in mediolateral direction located at 5mm lateral to the midline of C2 spinous process on both sides.In rostrocaudal direction,the archoring point of the superior and inferior C2 laminar screw located at 5mm and 9mm- respectively to the superior border of C2 laminar on each side.The screw intercrossed at the base of C2 spinous process rostrocaudally via the contra side laminar and ended at the central point of the C2 inferior facet process.The length and the angle of C2 laminar screw trajectory were measured.Result：The mean thickness of the superior edge,median edge and inferior edge of C2 laminar was 3.02mm,5.91mm and 5.59mm respectivly.The mean height of C2 spinous process,laminar and inferior articular process was 12.40mm, 12.95mm and 14.03mm,respectively.The mean length of the superior and inferior C2 laminar screw was 25.41mm and 27.39mm respectively.The projection angle for the superior C2 laminar screw averaged 26.4° anteriorly and 7.6°inferiorly,30.1°anteriorly and 1.4°superiorly for inferior screw.Conclusion：It＇s feasible and reliable for C2 laminar screw placement in Chinese people,and this could be used as a supplementary method for convertional posterior screw fixation techniques of axis.
出处
《中国脊柱脊髓杂志》
CAS
CSCD
2006年第1期48-51,共4页
Chinese Journal of Spine and Spinal Cord
基金
广东省医学科研基金项目(A2005503)
广东省自然科学基金团队项目(20023001)
关键词
枢椎
椎板螺钉
内固定
解剖学
Axis
Laminar screw
Internal fixation
Anatomy
