F-0927 全人工股関節セメントタイプステム形状の最適化設計(G02-2 モデリング・最適設計)(G02 バイオエンジニアリング部門一般講演)

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  • F-0927 Shape optimization of cemented stem at Total Hip Arthroplasty

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Loosening of cemented femoral hip stems could be initiated by failure of the cement mantle due to high cement stress. This report describes static analysis of stress in the bone cement mantle, Design Sensitivity Analysis (DSA), and the three dimensional shape optimization of cemented femoral hip stems. This study analyzed stresses in the cement mantle, using a three-dimensional p-adaptive finite element method based on 3D CAD model. The p-methods and 3D CAD based model made an exact modeling possible. The results of the design optimization showed considerable reduction in stress concentrations in the cement mantle compared to the default design.

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