Engineering Transactions, 49, 2-3, pp. 417–429, 2001

Evolutionary Programs in the Optimization of Cementless Hip Prosthesis

J. Bauer
Polish Academy of Sciences

M. Pyrz
University of Science and Technology of Lille

The optimal design of cementless hip prosthesis is investigated in the paper. Design variables are materials (represented by their Young's moduli) of the non-homogenous stem prosthesis, disposed in vertical layers. The minimisation of the interface stress function with constraints on the resorbed bone mass fraction is presented. A simplified two-dimensional FEM model of a stem-bone configuration is considered, enabling however to obtain essential characteristics of the stem-bone load-transfer mechanism. Evolutionary algorithm approach is applied to find the optimal solution.
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R.J. YANG, K.K. CHOI, R.D. CROWNINSHIELD, R.A. BRAND, Design sensitivity analysis, a new method for implant design and a comparison with parametric finite element analysis, J. Biomechanics, 17, 849–854, 1984.

R.M. HUISKES and R. BOEKLAGEN, Mathematical shape optimization of hip prosthesis design, J. Biomechanics, 22, 793–804, 1989.

P. KOWALCZYK, Numerical evoluation of sensitivity of stress distribution in bone to geometric parameters of endoprothesis, J. Theoret. Appl. Mechanics, 37, 3, 555–577, 1999.

PB. CHANG, B. J. WILLIAMS, T.J. SANTNER, W.F. NOTZ and D.L. BARTEL, Robust optimization of total joint replacements incorporating environmental variables, Trans. ASME. J. Biomechanics Engng., 121, 304–310, 1999.

J.H. KUIPER and R. HUISKES, Mathematical optimization of elastic properties: Application to cementless hip stem design, Trans. ASME. J. Biomech. Engng., 119, 166–174, 1997.

J.H. KUIPER and R. HUISKES, The predictive value of stress shielding for quantification of adaptive bone resorption around hip replacement, Trans. ASME. J. Biomech. Engng., 119, 228–231, 1997.

Z. MICHALEWICZ, Genetic Algorithms + Data Structures = Evolution Programs, SpringerVerlag, Berlin–Heidelberg 1996.

DOI: 10.24423/engtrans.567.2001

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Polish Academy of Sciences, Warsaw, Poland