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    姜海波, 葛世荣. 骨水泥与置换髋关节的界面力学计算[J]. 机械工程材料, 2008, 32(1): 24-26.
    引用本文: 姜海波, 葛世荣. 骨水泥与置换髋关节的界面力学计算[J]. 机械工程材料, 2008, 32(1): 24-26.
    shu
    JIANG Hai-bo, GE Shi-rong. Mechanical Calculations for Interfaces between Bone Cement and Implanted Hip Joint Prostheses[J]. Materials and Mechanical Engineering, 2008, 32(1): 24-26.
    Citation: JIANG Hai-bo, GE Shi-rong. Mechanical Calculations for Interfaces between Bone Cement and Implanted Hip Joint Prostheses[J]. Materials and Mechanical Engineering, 2008, 32(1): 24-26.
    shu

    骨水泥与置换髋关节的界面力学计算

    Mechanical Calculations for Interfaces between Bone Cement and Implanted Hip Joint Prostheses

      摘要
    • 摘要: 针对临床中常用的两种骨水泥进行了比较分析,采用有限元方法获得了骨水泥层的应力分布和数值大小的直观图.结果表明:目前临床采用的Ti6Al4V、316L和CoCrMo假体材料均具有应力遮挡现象,只是弹性模量不同遮挡会产生差异,具体表现为弹性模量越高遮挡越明显;对PMMA和CAP两种骨水泥固定的假体进行分析后得出,采用骨水泥固定方法的股骨所受到的应力数值要大于生物学(无骨水泥)固定方法下的股骨,骨水泥对于减少应力遮挡有一定的作用,对于术后假体的固定和患者的康复均具有积极的作用.

       

      Abstract: The hip joint prostheseses fixed respectively by (CAP) and polymethyl methacrylate(PMMA) bone cement had been analyzed with finite element method in the ANSYS software and the stress distribution and magnitude of peak stress were obtained.The biology method fixation was also analyzed with the same method.The phenomenon of stress-shielding had been found in different materials,such as 316L stainless steel,CoCrMo alloy and Ti6Al4V alloy,and stress decrease during elastic module increase was found in these materials.By the calculation,it is obvious that the CAP and PMMA bone cement fixation have greater stress in the femur bone than biology method fixation.Bone cement fixation method is benefit for the bone reconstruction and patient healing since it should decrease the stress-shielding affection.

       

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