腰椎皮质骨通道螺钉固定系统的生物力学实验

发布时间：2018-05-31 22:02

本文选题：脊柱融合术 + 生物力学　；参考：《中国组织工程研究》2017年03期

【摘要】：背景:通过改变现行的传统椎弓根螺钉置入方式,以获得更佳的螺钉与骨的把持力,2009年Santoni等提出将皮质骨通道技术应用于腰椎内固定。目的:分析皮质骨通道螺钉固定系统在腰椎间融合固定时的生物力学稳定性。方法:获取20个新鲜初生小牛L3/4、L5/6运动节段标本,在非破坏状况下检测其不同状态下的活动度,作为正常对照;随后将20个标本分为皮质骨通道螺钉组与传统椎弓根螺钉组,分别进行皮质骨通道螺钉固定辅助腰椎后路椎间融合固定、传统椎弓根螺钉辅助腰椎后路椎间融合固定,在非破坏状况下检测两组不同状态下的活动度;翻修组为传统椎弓根螺钉组测试结束后撤钉,改用皮质骨通道螺钉固定,检测其不同状态下的活动度。结果与结论:皮质骨通道螺钉组、传统椎弓根螺钉组左右弯曲、前屈、后伸、轴向旋转运动状态下的活动度较正常对照组明显降低(P0.05),皮质骨通道螺钉组、翻修组左右弯曲、前屈、后伸、轴向旋转运动状态下的活动度与传统椎弓根螺钉组比较差异无显著性意义(P0.05)。结果表明,椎弓根皮质骨通道技术辅助腰椎后路融合固定可获得与传统椎弓根螺钉辅助腰椎后路融合固定相同的稳定性,同时是传统椎弓根螺钉固定失败后翻修的一种新选择。
[Abstract]:Background: by changing the traditional pedicle screw placement method to obtain better screw and bone holding force, Santoni et al proposed to apply cortical bone channel technique to lumbar spine fixation in 2009. Objective: to analyze the biomechanical stability of cortical canal screw fixation system in lumbar interbody fusion fixation. Methods: twenty fresh newborn calf L 3 / 4 L 5 / 6 motion segment specimens were obtained, and their activities in different states were measured under non-destructive condition as normal control, and then 20 specimens were divided into cortical bone channel screw group and traditional pedicle screw group, and 20 of them were divided into two groups: cortical canal screw group and traditional pedicle screw group, and 20 of them were divided into cortical canal screw group and traditional pedicle screw group. Cortical bone passage screw fixation assisted lumbar posterior intervertebral fusion fixation, traditional pedicle screw assisted lumbar posterior intervertebral fusion fixation, the activity of the two groups in different states were measured under the condition of non-destructive. The revision group was treated with pedicle screw and cortical canal screw fixation at the end of the test. Results and conclusion: the activity of cortical channel screw group, traditional pedicle screw group and revision group were significantly lower than that of the normal control group under the condition of left and right bending, flexion, extension and axial rotation. The cortical channel screw group and revision group were significantly lower than those of the normal control group, and the left and right curvature of the revision group were significantly lower than that of the normal control group. There was no significant difference in the range of motion between the anterior flexion, extension and axial rotation motion and the traditional pedicle screw group (P 0.05). The results showed that the pedicle cortical bone passage technique could obtain the same stability as the traditional pedicle screw assisted posterior lumbar fusion fixation, and it was also a new choice for revision after the failure of the traditional pedicle screw fixation.
【作者单位】：南通大学附属医院骨科;南通市第三人民医院;解放军第二军医大学附属长征医院;
【基金】：南通市科技项目(MS22015074)~~
【分类号】：R687.3;R318.01

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