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Zastosowanie technologii generatywnych w konstrukcji trzpieni endoprotezy stawu biodrowego o obniżonej sztywności
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Abstrakty
This paper presents proposed new design solutions for hip endoprosthesis stems characterised by reduced stiffness as a result of application of internal lattice structures obtained using generative production techniques. The conducted analysis showed the possibility of achieving lattice structures inside implants as well as the possibility of controlling mechanical characteristics of the end forms of implants. It was demonstrated that the use of inner lattice structures resulted not only in reduced implant stiffness, but also in reduced formation of adverse cancellous tissue trabecular structures. The obtained results indicate that it is possible to obtain implant structures that are much less vulnerable to the stress shielding effect than traditional designs.
W pracy przedstawiono nowe rozwiązania konstrukcyjne trzpieni endoprotezy stawu biodrowego charakteryzujące się obniżoną sztywnością uzyskana przez zastosowanie ażurowych konstrukcji wewnętrznych. Konstrukcje tego typu są otrzymywane przez zastosowanie generatywnych technik wytwarzania. Przeprowadzona analiza wykazała zarówno możliwość uzyskania konstrukcji ażurowych w bardzo szerokim zakresie jak również możliwość sterowania charakterystykami mechanicznymi końcowych postaci implantów. Wykazano, iż zastosowanie wewnętrznych konstrukcji ażurowych prowadzi nie tylko do zmniejszenia sztywności implantu, lecz również prowadzi do zmniejszenia efektu kształtowania się wokół implantu niekorzystnych struktur beleczek tkanki gąbczastej. Uzyskane wyniki wskazują na potencjalną możliwość uzyskania konstrukcji implantów w znacznie mniejszym stopniu narażonych na efekty "stress shieldingu" niż konstrukcje tradycyjne.
Czasopismo
Rocznik
Tom
Strony
753--767
Opis fizyczny
Bibliogr. 36 poz., rys., tab., wykr.
Twórcy
autor
autor
autor
autor
autor
- Wrocław University of Technology, The Division of Biomedical Engineering and Experimental Mechanics, Institute of Machine Design and Operation, ul. Łukasiewicza 7/9, 50-371 Wrocław, Poland
Bibliografia
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Typ dokumentu
Bibliografia
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bwmeta1.element.baztech-article-BPZ5-0019-0036