人工寛骨臼における変位と応力解析

概要

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In order to improve the service life of the artificial acetabular cup, it is important to develop the material and design, and to assess the mechanical behavior around the cup. In this study, visual measurement technique, such as electronic speckle interferometry (ESPI) and two-dimensional finite element method (FEM) are employed to investigate the mechanical behavior. First, the influence of the characteristics of cancellous bone and cup thickness on mecanical behavior around the cup was investigated. Good agreement of the cup model analysis has been found between experiments and FEM predictions. In addition, detailed analysis was also carried out by FEM. Following results were mainly obtained. (1) Measurements of cancellouse bone with porous structure can be performed by the ESPI method. (2) There are discontinuities for the displacement distribution of the transverse direction in each boundary regions of cup, bone cement and cancellous bone. (3) The maximum shear stress exists in boundary region of cup and bone cement.
社団法人日本機械学会の論文
2005-10-25