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1 Journal of Theoretical and Applied Mechanics

1 2019

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Strenghth analysis of hip joint replacement revision implant

Skowronek Paweł, Twardoch Krzysztof, Skawiński Piotr, Żołnierz Marcel

Journal of Theoretical and Applied Mechanics

2019

Vol. 57 nr 1

235--248

The subject of the article is the evaluation of the strength of revision implants made of titanium or tantalum alloy, used during bone reconstruction of a hip joint while potentially using additional stabilizing screws, necessary due to significant bone loss. The article provides a preliminary strength analysis of implants, indispensable for further evaluation of strength limitations due to the risk of implant damage depending on the structure and number of additional screw holes. In the human locomotor system, the hip joint is the joint with the most load, hence the main problem is to establish an adequate load model which ought to be assumed for the needs of implant strength analysis. It is found necessary to perform a short, analytical review of the existing hip joint load models from the point of view of choosing the proper one, considering evaluation of implant strength by means of numerical studies using FEM. Differences in the implant load distribution depending on the used material are shown.