知识与财富的链接
目的通过研究GSS及SSE2种椎弓根螺钉固定脊柱标本的稳定性差异及疲劳特性,分析造成上述差异的内在因素。方法采集陈旧性国人胸腰椎脊柱标本5具,随机取样分为2组。分别用德产SSE椎弓根螺钉和国产GSS椎弓根螺钉进行固定。按Panjabi法建立生物力学实验模型,对其进行常规生物力学测试及高频疲劳实验,期间记录相应值。所有数据用统计软件SPSS10．0完成t检验。结果应力遮挡实验,GSS固定时平均应力遮挡率为32．4％,小于SSE的37．24％;极限强度实验GSS钉极限加载力为3510N,高于SSE钉的3250N（P〈0．05）;疲劳实验,GSS循环次数为0．92×10^6,优于SSE的0．68×10^6。结论相对于SSE,GSS在临床上进行椎弓根固定时不易发生断钉。
Objective To analyze internal reasons of the differences in stability and fatigue property between GSS and SSE pedicle screws on spinal specimens.Methods Five old thoracolumbar spinal specimens were collected and randomly divided into 2 groups.The specimens were conventionally fixed by 2 kinds of pedicle screws,one kind was SSE screw system made in Germany and the other was GSS system made in China.Biomechanical test model was established by Panjabi method,and conventional biomechanical test and high freque...
