新型与传统LCP固定股骨干骨折的生物力学比较
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1.昆明理工大学;2.昆明市延安医院;3.云南省医疗器械检验研究院

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Biomechanical comparison of new and traditional LCP fixation for femoral shaft fractures
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    摘要:

    目的 对比研究股骨干骨折治疗采用的新型与传统LCP的生物力学性能,为选择更有效的接骨板提供理论依据。方法 通过实验对接骨板进行弯曲强度与疲劳测试,再结合三维有限元分析软件Ansys Workbench对接骨板的变形、应力及寿命进行分析。结果 实验成功测出新型LCP的弯曲屈服载荷与弯曲强度均为传统LCP的1.4倍,平均循环次数为1000000与47091次,并通过有限元分析计算出使用寿命相差33.8%。结论 使用新型LCP固定股骨干骨折时失效的可能性将小于传统LCP,新型LCP拥有更有效的生物力学稳定性的特点。

    Abstract:

    Objective To compare the biomechanical properties of traditional LCP and new LCP in the treatment of femoral shaft fracture. Methods The bending strength and fatigue of the plate were tested by experiments, and then the deformation, stress and life of the plate were analyzed with the three-dimensional finite element analysis software Ansys Workbench. Result The experimental results show that the bending yield load and bending strength of the new LCP are 1.4 times of that of the traditional LCP, and the average cycle times are 1000000 and 47091. The difference of service life is 33.8% through the finite element analysis. Conclusion The failure probability of new LCP is less than that of traditional LCP, the new LCP has more effective biomechanical stability.

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  • 收稿日期:2020-09-25
  • 最后修改日期:2020-11-13
  • 录用日期:2020-11-17
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