PMID: 9168392May 1, 1997Paper

Mathematical optimization of elastic properties: application to cementless hip stem design

Journal of Biomechanical Engineering
J H Kuiper, R Huiskes

Abstract

The designer of a cementless hip stem in total hip replacement must find a balance between two conflicting demands. On the one hand, a stiff stem shields the surrounding bone from mechanical loading (stress shielding), which may lead to bone loss, particularly around the proximal part of the stem. Reducing the stem stiffness decreases the amount of stress shielding and hence the amount of bone loss. However, this measure inevitably promotes higher proximal interface stresses and thereby increases the risk of proximal interface failure. The designer's task therefore is to optimize the stem stiffness in order to find the best compromise in the conflict. Yet, a better compromise might be found when the stem material was nonhomogeneous, in other words when an arbitrary distribution of the elastic properties inside the stem was allowed. The number of conceivable designs would increase enormously, making the designer's task almost impossible. In the present paper, we develop a numerical design optimization method to determine the optimal stiffness characteristics for a hip stem. A finite element program is coupled with a numerical optimization method, thus producing a design optimization scheme. The scheme minimizes the probability f...Continue Reading

References

Sep 11, 1992·The Journal of Arthroplasty·M JastyW H Harris
Jan 1, 1989·Journal of Biomechanics·R Huiskes, R Boeklagen
Jan 1, 1989·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·H M TensiR Ascherl
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Jan 1, 1996·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·J H Kuiper, R Huiskes

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Citations

Mar 27, 2001·Computer Methods in Biomechanics and Biomedical Engineering·P. VenaR. Huiskes
Apr 10, 2012·Journal of Biomechanical Engineering·Sajad Arabnejad Khanoki, Damiano Pasini
Oct 11, 2014·TheScientificWorldJournal·Azim Ataollahi OshkourNoor Azuan Abu Osman
Jun 20, 2014·Journal of the Mechanical Behavior of Biomedical Materials·Jan WiedingRainer Bader
Aug 12, 2015·Computer Methods in Biomechanics and Biomedical Engineering·Fernando José Quevedo González, Natalia Nuño
Aug 8, 2013·International Journal for Numerical Methods in Biomedical Engineering·Azim Ataollahi OshkourM Bayat
May 21, 2014·Artificial Organs·Azim Ataollahi OshkourNoor Azuan Abu Osman
Sep 26, 2015·Bio-medical Materials and Engineering·H S Hedia, N Fouda
Jan 13, 2015·Journal of Biomechanics·D R Sumner
Feb 9, 2017·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Myriam CillaGeorg N Duda
Mar 23, 2013·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·A A OshkourW A B Wan Abas
Oct 17, 2001·Journal of Biomechanical Engineering·P Kowalczyk
Dec 21, 2016·Journal of Biomechanical Engineering·Andrew D CramerAnthony P Roberts
Feb 1, 2007·Journal of Biomedical Materials Research. Part a·Habiba BougheraraL'Hocine Yahia
Jun 4, 2005·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·H S Hedia
Mar 1, 2006·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·H S HediaN Fouda
Nov 14, 2014·Journal of Biomechanical Engineering·Souptick ChandaDilip Kumar Pratihar

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