采用关键椎置钉及选择性融合治疗Lenke6型AIS可行性的有限元分析Finite element analysis of key-segment instrumentation technique and selective fusion strategy for Lenke 6 AIS
张宏其;陈凌强;郭超峰;唐明星;刘少华;葛磊;刘金洋;吴建煌;
摘要(Abstract):
[目的]通过有限元模型矫形手术模拟的方法探讨关键椎置钉技术的可行性及矫形效果,分析Lenke 6型脊柱侧凸是否适合采用选择性融合策略。[方法]通过CT图像建立1例Lenke 6型特发性脊柱侧凸三维有限元模型,并验证其有效性后,利用后路CD矫形手术模拟技术,分别模拟全节段椎弓根钉技术矫形工况、关键椎置钉技术矫形工况、胸腰弯选择性融合工况等。测量各种工况完成后双弯Cobb角度、计算矫形率,分析各种工况的矫形效果。[结果]全节段椎弓根钉技术(非选择性融合):胸腰弯矫形率47.8%,主胸弯矫形率43.9%;关键椎置钉技术:胸腰弯矫形率44.2%,主胸弯矫形率19.1%;胸腰弯选择性融合:胸腰弯矫形率43.5%,主胸弯矫形率14.3%。[结论]全节段椎弓根钉技术因矫形力施加点更多,矫形效果较关键椎置钉技术更佳;Lenke 6型脊柱侧凸采用选择性融合策略应慎重,非选择性融合策略能明显矫正双弯,纠正脊柱序列,更适合该类型病例。
关键词(KeyWords): 三维有限元法;青少年特发性脊柱侧凸;后路三维矫形;生物力学
基金项目(Foundation): 湖南省科技厅重点项目资助(编号:2009SK2012)
作者(Author): 张宏其;陈凌强;郭超峰;唐明星;刘少华;葛磊;刘金洋;吴建煌;
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参考文献(References):
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