1233 Multicriteria design optimization for an artificial hip joint

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  • 1233 複数の荷重を受ける人工股関節ステム形状の最適化計算(G02-5 関節と軟骨(2),G02 バイオエンジニアリング)

Abstract

Total hip arthroplasty (THA) is mainly used for the patients, who are affected with rheumatoid arthritis, coxarthrosis, and so on. The long-term success of total hip arthroplasty depends on the chance of acrylic cement failure and interface disruption. The purpose of this study is to minimize the risks of cement failure by using optimization. A generic three-dimensional FEM model of the proximal femur containing a cemented femoral stem of a total hip arthroplasty was developed. The design parameters are defined on cross section of stem. The design objective was to minimize several principal stresses in the cement mantle from several load conditions. In optimization, multiobjective generic algorithm (MOGA) was used to remove the extreme value.

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