中国组织工程研究

中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (30): 5524-5528.doi: 10.3969/j.issn.2095-4344.2012.30.004

• 数字化骨科 digital orthopedics • 上一篇    下一篇

儿童股骨近端解剖钢板生物力学及三维有限元分析

廖 瑛，韩 志，王晓旭，黄煊怀   

  • 收稿日期:2011-12-10 修回日期:2012-01-17 出版日期:2012-07-22 发布日期:2012-07-22
  • 通讯作者: 南华大学第一附属医院骨科，湖南省衡阳市 421001
  • 作者简介:廖瑛，女，1963年生，湖南省衡阳市人，汉族，1985年湖南医科大学(现中南大学湘雅医学院)毕业，教授，主任医师，主要从事骨与关节损伤的研究。 Liaoying8281462@163.com

Biomechanical and three-dimensional finite element analysis of children proximal femur anatomy-type plate

Liao Ying, Han Zhi, Wang Xiao-xu, Huang Xuan-huai   

  • Received:2011-12-10 Revised:2012-01-17 Online:2012-07-22 Published:2012-07-22
  • Contact: Department of Orthopedics, First Affiliated Hospital of Nanhua University, Hengyang 421001, Hunan Province, China
  • About author:Liao Ying, Professor, Chief physician, Department of Orthopedics, First Affiliated Hospital of Nanhua University, Hengyang 421001, Hunan Province, China Liaoying8281462@163.com

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337

被引次数

6

摘要：

背景：以往的三维有限元研究多集中在成人骨科生物力学方面。
目的：以三维有限元方法分析儿童股骨近端解剖钢板固定股骨转子下骨折的生物力学性能。
方法：从6具儿童尸体上取股骨12根，X射线排除骨病后分为2组，实验组采用儿童股骨近端解剖钢板固定，对照组采用重建钢板固定。分别进行生物力学实验，测试其轴向压缩、扭转刚度、弯曲刚度。选取1名健康男性儿童进行螺旋CT扫描技术，获得股骨近端图像数据，建立儿童股骨近端三维有限元模型，并进行三维有限元力学分析。
结果与结论：在轴向压缩刚度、扭转刚度上儿童股骨近端解剖钢板与重建钢板两者比较差异无显著性意义(P > 0.05)；在抗弯曲刚度上,两者相比差异有显著性意义(P < 0.05)。结果显示儿童股骨近端解剖钢板的抗压能力、抗扭能力上与重建钢板相当，而在抗弯曲能力上强于重建钢板。生物力学三维有限元分析显示儿童股骨近端解剖型钢板的设计符合生物力学原理，具有较好的强度、刚度和稳定性，能够满足对儿童股骨近端骨折固定的需要。儿童股骨近端解剖型钢板对固定股骨转子下骨折具有良好的生物力学性能。

关键词: 儿童, 股骨转子下骨折, 儿童股骨近端解剖钢板, 生物力学, 三维有限元

Abstract:

BACKGROUND: Previous studies of three-dimensional finite element are more concentrated on orthopedic biomechanics in adults.
OBJECTIVE: To investigate the biomechanical property of proximal femur anatomy-type plate for femoral subtrochanteric fractures by three-dimensional finite element analysis.
METHODS: Totally 12 femurs were removed from 6 fresh children cadavers, and then divided into two groups after excluding bone disease by X-ray. Children proximal femur anatomy-type plate was used for experimental group, and reconstruction plate was used for control group. Biomechanical tests for the anti-axial compression, torsional stiffness and bending stiffness were performed. A healthy boy was selected to obtain image data of proximal femur by spiral CT scanning technology. The three-dimensional finite element model of children’s proximal femur was established based on plate data to carry out biomechanical analysis.
RESULTS AND CONCLUSION: There was no significant difference of axial compression stiffness and torsional stiffness between the two groups (P > 0.05), but bending stiffness of two groups had significant difference (P < 0.05). The results indicated that the capacity of anti-compression and anti-torsion of the children proximal femur anatomy-type plate is equally to reconstruction plant, but the capacity of anti-bend of the children proximal femur anatomy-type plate is superior to the reconstruction plant. Three-dimensional finite element analysis of biomechanics indicated that the design of children proximal femur anatomy-type plate is consistent with biomechanics principle and can meet the need of proximal femur fixation in children with the good intension, rigidity and constancy. Children proximal femur anatomy-type plate has better biomechanical property for the femoral subtrochanteric fracture.

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