分体螺旋式人工股骨头置换后应力分析的对比性研究

A COMPARATIVE STUDY OF STRESS ANALYSIS OF A REPLACED FISSILE SPIRAL TYPE FEMORAL HEAD PROSTHESIS

目的：论证分体螺旋式人工股骨头置换的合理性。是否符合生物力学原理。方法：利用９具新鲜成入股骨标本，用三种不同人工髋置换后进行实验应力分析和比较。结果：证明分体螺旋式人工股骨头在应力分布、界面应力、应力遮挡车、初始微动等生物力学特性上优于珍珠面假体和钢制人工髋。结论：分体螺旋式人工骨头置换后应力分布合理，固定牢固，具有高度稳定性。

To prove whether or not the fissile spiral type artificial femoral head replacement conforms to biomechanics principles. Methods f Comparative experimental stress analysis was performed on nine fresh cadaver femors which were replaced by three different kinds of artificial femoral head. Results' The fissile spiral type femoral head has a good biomechanical characteristics on stress distribution, stress of inferface, stress shielding rate and initial micro-movement. Conclusion: The femoral head prosthesis of fissile spiral type has a reasonable stress distribution, strong fixation and high stability than the other types in comparison.