卢昌怀;刘志军;晏峻峰;张宏波;

• 1:湖南省中医药大学附属常德医院常德市第一中医医院
• 2:湖南省中医药大学信息科学与工程学院

摘要(Abstract)：

[目的]建立Lenke 1AN型青少年特发性脊柱侧凸的三维有限元模型,分析三种不同置钉模式中凹侧螺钉的应力分布。[方法]建立一个T2～S5脊柱侧凸的三维有限元模型,在凹侧置入椎弓根螺钉,按照不同的置棒方式进行矫形模拟。A组模拟从顶椎开始,再依次向上和向下置棒;B组从中立椎开始,然后依次向上,再从中立椎下方开始置棒;C组从中立椎开始,然后依次向下,再从中立椎上方开始置棒,最后分析椎弓根螺钉及连接棒的等效应力。[结果]研究表明A组连接棒上的等效应力相对稳定,而B组和C组应力变化较大。虽然无论何种置棒顺序,都可以得到相同的脊柱侧凸矫正效果,但是A组连接棒上应力分布变化较小,而且最大应力小。[结论]三种置棒顺序都可以得到较好的脊柱侧凸矫正效果,A组椎弓根钉及连接棒断裂风险最低。

关键词(KeyWords)： 青少年特发性脊柱侧凸;有限元;等效应力;椎体直接旋转技术

Abstract:

Keywords:

基金项目(Foundation): 湖南省自然科学基金项目(编号：2015JJ6075)

作者(Author): 卢昌怀;刘志军;晏峻峰;张宏波;

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DOI:

参考文献(References)：

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