中国组织工程研究2017，Vol.21Issue(3)：362-366,5.DOI:10.3969/j.issn.2095-4344.2016.03.007
腰椎皮质骨通道螺钉固定系统的生物力学实验
Biomechanics of lumbar cortical bone trajectory screw fixation
摘要
Abstract
BACKGROUND:Santoni put forward the cortical bone trajectory technology by changing the traditional pedicle screw placement for lumbar internal fixation in order to obtain better control of the screw and bone in 2009. OBJECTIVE:To analyze biomechanical stability of cortical bone trajectory system in the lumbar fusion. METHODS:Twenty fresh newborn calf L3/4, L5/6 motion segment specimens were obtained, and their ranges of motion were detected under different states, as normal controls. Subsequently, twenty samples were divided into cortical bone trajectory screw group and traditional pedicle screw group, which underwent cortical bone trajectory screw fixation combined with posterior lumbar fusion and traditional pedicle screw fixation combined with posterior lumbar fusion, respectively. Without destruction, ranges of motion were detected under different states in both groups. In the revision group, after the test in the traditional pedicle screw group, screw was withdrawn, and cortical bone trajectory screw was used to detect its range of motion under different states. RESULTS AND CONCLUSION:Ranges of motion at bending to the left and right, anteflexion, posterior extension and axial rotation were significantly lower in the cortical bone trajectory screw group and traditional pedicle screw group than in the normal control group (P<0.05). No significant difference in bending to the left and right, anteflexion, posterior extension and axial rotation was detected between the cortical bone trajectory screw and revision groups and traditional pedicle screw group (P>0.05). These results confirmed that cortical bone trajectory technology combined with posterior lumbar fusion can obtain identical stability as the traditional pedicle screw fixation combined with posterior lumbar fusion. Simultaneously, it is a new choice for revision after traditional pedicle screw fixation.关键词
骨科植入物/脊柱植入物/椎弓根皮质骨通道/椎弓根螺钉/生物力学/腰椎融合固定分类
医药卫生引用本文复制引用
姚羽,薛华伟,赵剑,张烽,曹涌,陈向东,赵金龙,姜星杰..腰椎皮质骨通道螺钉固定系统的生物力学实验[J].中国组织工程研究,2017,21(3):362-366,5.基金项目
南通市科技项目(MS22015074) （MS22015074）
