Evolutionary programs in the optimization of cementless hip prosthesis

• Autorzy: Bauer, J. , Pyrz, M.
• Języki publikacji: EN

Abstrakty

EN

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 reaction 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.

Słowa kluczowe

PL

algorytm ewolucyjny; optymalizacja; proteza

EN

evolutionary algorithm; optimization; prosthesis

• Czasopismo: Engineering Transactions
• Rocznik: 2001
• Tom: Vol.49, iss.2/3
• Strony: 417-429
• Opis fizyczny: Bibliogr. 7 poz. rys., wykr.

Twórcy

autor

Bauer, J.

• Institute of Fundamental Technological Research Polish Academy of Sciences Ul. Świętokrzyska 21, 00-049 Warsaw, Poland

autor

Pyrz, M.

• University of Science and Technology of Lille Lille Mechanics Laboratory (Ura Cnrs 1441) 59655 Villeneuve D'ascq, France

Bibliografia

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• 2. R. M. HUISKES and R. BOEKLAGEN, Mathematical shape optimization of hip prosthesis design, J. Biomechanics, 22, 793-804, 1989.
• 3. P. KOWALCZYK, Numerical evaluation of sensitivity of stress distribution in bone to geometric parameters of endoprothesis, J. Theoret. Appl. Mechanics, 37, 3, 555-577, 1999.
• 4. P. B. CHANG, B. J. WILLIAMS, T. J. SANTNER, W. F. NOTZ and D. L. BARTEL, Robust op­ timization of total joint replacements incorporating environmental variables, Trans. ASME. J. Biomechanics Engng., 121, 304-310, 1999.
• 5. 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.
• 6. 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.
• 7. Z. MICHALEWICZ, Genetic Algorithms + Data Structures = Evolution Programs, Springer­ Verlag, Berlin-Heidelberg 1996.