中文摘要：

利用有限元分析的方法,对髋关节中空多孔假体植入后的受力分布改变进行研究,为改进中空多孔人工关节假体的设计提供依据.建立了股骨和假体三维有限元模型,应用有限元分析软件Ansys5.7模拟单腿负重状态,考察应力分布并进行比较.使用SPSS Statistics 17.0软件进行分析处理,绘制折线图.结果表明：a.开孔后张力侧最大压应力有所减小,开孔部位的应力水平变化不明显.b.与周围骨质形成连接后孔缘局部应力增加,张力侧受力改变不明显.c.短柄假体受力模式仍为远端应力集中;张力侧应力减小,开孔部位应力明显增加.d.下孔受力均大于上孔,受力方向基本一致.

英文摘要：

Finite element method（FEM） models have been developed.Here a loading is applied and the stress distribution is detected,and then a comparative study is carried out under different conditions.Data are provided to optimize the design of CCB hip prosthesis.FEM models of femur and CCB hip prosthesis are established;the condition of monopod support is imitated and the stress distributions are detected and compared under different conditions using three-dimension finite element analysis software Ansys5.7.The data are treated with SPSS Statistics 17.0 and presented in line chart.Result showed that（1） Connection by cancellous bone will increase stresses around the hole;（2） Holes on the lateral side can lower the maximum stress on the lateral side slightly;（3） Shortening the length of the prosthesis can enlarge the biomechanical effect of the design;（4） Stress around the lower hole is always higher than the upper one,and the direction of the force in the corresponding position basically remains the same.