以椎板应力线及关节面为参考标志的改良椎弓根置钉方法的应用研究
姜传杰,杨永军,周纪平,杨凯,吴瑞,谭远超
中国临床解剖学杂志 ›› 2016, Vol. 34 ›› Issue (5) : 490-494.
以椎板应力线及关节面为参考标志的改良椎弓根置钉方法的应用研究
Applied research about modified method of vertebral plate stress line and articular facet as a reference mark of pedicle screw insertion
目的 探讨确定脊柱经椎弓根置钉的改良方法。 方法 以椎板应力线及关节面为参考标志的改良置钉方法及传统置钉方法对205例脊柱疾患患者进行手术置钉, A组进钉点:按传统进钉方法。B组改良置钉方法:寻找椎板应力线骨嵴及关节面的位置,以此为参考点。应用术中及术后X线、CT检查及术中神经根剥离子触摸检查置钉准确性,计算术中一次性置钉的成功率,比较传统入钉法与改良入钉法的置钉成功率。 结果 应用传统置钉方法与改良置钉方法置钉成功率在颈椎手术中分别达到78.1%和95.5%(P=0.002),在胸椎手术中达到82.4%和95.9%(P<0.001),在腰椎手术中达到80.3%和97.0%(P<0.001),总计成功率为80.7%和96.5%(P<0.001)。两组差异有明显统计学意义。 结论 应用椎板应力线及关节面为参考标志的椎弓根置钉方法可以作为颈椎、胸椎及腰椎传统置钉方法的改良方法,有较高的置钉成功率。应力线骨嵴及关节面分别代表椎体的应力传导情况,按此参考标志进行置钉,可实现椎弓根置钉的个体化,有较大的应用价值。
Objective To study the modified method of pedicle screw insertion. Methods 205 cases of spinal disorders, including thoracic, cervical and lumbar disorders, were randomly divided into two groups and underwent surgery to insert pedicle screw. Pedicle screw insertion method of group A was determined by the traditional method and group B was by the modified method, using the vertebral plate stress line and articular facet as a reference mark. Intraoperative and postoperative X-ray, CT and intraoperative nerve dissector touch inspection were adopted to determine the insertion accuracy. One-time success rate of pedicle screw insertion was calculated to compare which determination method was more successful. Results Success rates of traditional method and the modified method were respectively 80.7% and 96.5% (P<0.001), among which 78.1% and 95.5% (P=0.002) were in cervical spine surgery, 82.4% and 95.9% in thoracic surgery (P<0.001), 80.3% and 97.0% in lumbar spine surgery (P<0.001). Conclusion The modified method using vertebral plate stress line and articular facet as a reference mark of pedicle screw insertion has a higher success rate of insertion. As stress line and articular facet respectively representing the stress conduction of the vertebral body, the modified pedicle insertion method showed a great application value and could realize individualized pedicle screw insertion.
[1] Krag MH, Van Hal ME, Beynnon BD. Placement of transpedicular vertebral screws close to anterior vertebral cortex. Description of methods [J]. Spine, 1989, 14(8): 879-883.
[2] Magerl FP. Stabilization of the lower thoracic and lumbar spine with external skeletal fixation [J]. Clin Orthop Relat Res, 1984, 189: 125-141.
[3] Weinstein JN, Spratt KF, Spengler D, et al. Spinal pedicle fixation: reliability and validity of roentgenogram-based assessment and surgical factors on successful screw placement [J]. Spine, 1988, 13(9): 1012-1018.
[4] Heary RF, Bono CM, Black M. Thoracic pedicle screws: postoperative computerized tomography scanning assessment [J]. J Neurosurgery, 2004, 100(4 Suppl Spine): 325-331.
[5] Ebraheim NA, Rollins JR Jr, Xu R, et al. Projection of the lumbar pedicle and its morphometric analysis [J]. Spine, 1996, 21(11): 1296-1300.
[6] Ebraheim NA, Xu R, Ahmad M, et al. Projection of the thoracic pedicle and its morphometric analysis [J]. Spine, 1997, 22(3): 233-238.
[7] Tsubota K, Suzuki Y, Yamada T, et al. Computer simulation of trabecular remodeling in human proximal femur using large-scale voxel FE models: Approach to understanding Wolff's law [J]. J Biomech, 2009, 42(8): 1088-1094.
[8] Yuan Q, Han X, Han X, et al. Krag versus Caudad trajectory technique for pedicle screw insertion in osteoporotic vertebrae: biomechanical comparison and analysis [J]. Spine, 2014, 39(26 Spec No.): B27-B35.
[9] 杜心如, 张一模, 赵玲秀, 等. 椎弓根毗邻结构的观察及其临床意义 [J]. 中国矫形外科杂志, 2000, 7(11): 1063-1065.
[10]邓东海, 于滨生, 王文豪, 等. 微创L5椎弓根钉进钉点的有效性分析 [J]. 中国组织工程研究, 2015, 19(26): 4180-4185.
[11]Schmidt H, Heuer F, Claes L, et al. The relation between the instantaneous center of rotation and facet joint forces - A finite element analysis [J]. Clin Biomech (Bristol, Avon), 2008, 23(3): 270-278.
[12]Zeng ZL, Jia L, Xu W, et al. Analysis of risk factors for adjacent superior vertebral pedicle-induced facet joint violation during the minimally invasive surgery transforaminal lumbar interbody fusion: a retrospective study [J]. Eur J Med Res, 2015, 20(1): 80.
[13]Kim YJ, Lenke LG, Bridwell KH, et al. Free hand pedicle screw placement in the thoracic spine: is it safe? [J]. Spine, 2004, 29(3): 333-342.
山东省2012年科学技术发展项目(2012YD19004)
/
〈 |
|
〉 |