经皮椎体成形术治疗骨质疏松性压缩性骨折的有限元力学分析

被引:10
作者
黄宇 [1 ]
林晋 [2 ]
陈宣维 [1 ]
许卫红 [1 ]
林建华 [1 ]
机构
[1] 福建医科大学附属第一医院脊柱外科
[2] 福建卫生职业技术学院
关键词
骨质疏松性椎体压缩性骨折; 经皮椎体成形术; 有限元分析;
D O I
暂无
中图分类号
R687.3 [骨骼手术];
学科分类号
100220 [骨科学];
摘要
目的建立胸腰段骨质疏松性椎体压缩性骨折的病理三维有限元模型,分析手术前后病椎及邻近椎体应力变化情况。方法取CT三维重建资料通过软件MIMICS10.0建立椎体的三维实体模型,以三维有限元分析软件ANSYS12.0模拟经皮椎体成形术(PVP)过程在腰1(L1)椎体中置入不同容量骨水泥(2、4、6、8 ml),分析轴向压缩直立、前屈、后伸、侧弯、旋转5种加载状态下手术前后相邻椎体的应力变化。结果小剂量骨水泥注入(2、4 ml),病椎所受应力逐渐增加,而较大治疗量骨水泥注射入(6、8 ml),随着病椎硬度及刚度加强,其所受应力逐渐下降;而临近椎体在骨水泥注入量逐渐增加过程中,所受应力未见明显改变。结论对于老年骨质疏松性压缩性骨折的力学研究,三维有限元力学分析具有良好的应用前景及临床价值;在能够避免大治疗剂量骨水泥注入所带来并发症(如渗漏)前提下,4~8 ml骨水泥注入量更加有效,且不增加邻近椎体骨折的风险。
引用
收藏
页码:6277 / 6279
页数:3
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