Regensburg 2022 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 7: Poster 1
BP 7.28: Poster
Montag, 5. September 2022, 18:00–20:00, P1
Nano-tribological investigation of the influence of specific synovial fluid components on lubrication of artificial joint materials — •Alex Kreis1, Lukas Böttcher1, Regina Lange1, Paul Henke2, Rainer Bader2, Ingo Barke1, and Sylvia Speller1 — 1Institute of Physics, University of Rostock — 2Biomechanics and Implant Technology Research Laboratory, University Medical Center Rostock
The human synovial fluid in native and endoprosthetic joints enables outstanding lubrication and low wear. The question is how this fluid or its specific components, such as hyaluronic acid and albumin, participate in this performance on a nanoscopic scale. In this work we aim to determine the frictional forces between the force microscope (AFM) tip (Si3N4) and typical materials for articulating components of endoprosthetic implants, such as ceramics, ultra-high molecular weight polyethylene (UHWMPE) and cobalt-chromium (CoCr) based alloy by means of lateral force microscopy (LFM). As reference we use force loops acquired on borosilicate glass surfaces in water. Further we plan to investigate and discuss the influence of the chain length of hyaluronic acid on tribological properties of each of these materials.