SURFACE RANDOM PARAMETERS FOR ENDOPROSTHESIS LUBRICATION

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SURFACE RANDOM PARAMETERS FOR ENDOPROSTHESIS LUBRICATION

Journal Title: Tribologia - Year 2016, Vol 265, Issue 1

Abstract

Within the last ten years in the European Union the number of bone fractures caused by the osteoarthritis increased twofold. More than 100000 hip or knee joints in total have been implanted in Germany during one year. Within ten years, 5% of them have failed by aseptic loosening. The non-invasive determination of friction forces and the control of their values during lubrication of cartilage cells on the superficial layer of human joint surfaces before implantation have a significant but not sufficient influence on the observation of the early abrasive wear of cartilage joint and the development of osteoporosis. From this fact was drawn the inspiration for the performed investigations referring the endoprosthesis surface parameters, because knowledge of the roughness of prosthesis surfaces and friction forces and their control methods makes it possible to provide the necessary random standard deviation of gap height and finally information about implantation possibility. This paper has been prepared based on the objective knowledge gained from the author’s experimental and theoretical experiences to represent the methodology and goal of the idea described in the study and to make possible a wider discussion on this subject for further developments during the realization of various bioengineering projects in the field of hydrodynamic artificial human and humanoid robots joints.<br/><br/>

Authors and Affiliations

Krzysztof WIERZCHOLSKI

Keywords

endoprosthesis surfaces geometrical random parameters measurements gap height hydrodynamic pressure random lubrication prognosis.

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EP ID EP248239
DOI 10.5604/01.3001.0010.7593
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