Amorphous Carbon Coatings for Total Knee Replacements—Part I: Deposition, Cytocompatibility, Chemical and Mechanical Properties

Rothammer B, Neusser K, Marian M, Bartz M, Krauß S, Böhm T, Thiele S, Merle B, Detsch R, Wartzack S (2021)

Publication Language: English

Publication Type: Journal article, Online publication

Publication year: 2021

Journal

Polymers MDPI

Book Volume: 13

Pages Range: 1 - 23

Journal Issue: 12

URI: https://www.archiv.mfk.tf.fau.de?file=pubmfk_60c364643981f

DOI: 10.3390/polym13121952

Open Access Link: https://www.mdpi.com/2073-4360/13/12/1952

Abstract

Diamond-like carbon (DLC) coatings have the potential to reduce implant wear and thus to contribute to avoiding premature failure and to increasing service life of total knee replacements (TKAs). This two-part study addresses the development of such coatings for ultrahigh molecular weight polyethylene (UHMWPE) tibial inlays as well as cobalt-chromium-molybdenum (CoCr) and titanium (Ti64) alloy femoral components. While a detailed characterization of the tribological behavior is the subject of part II, part I focusses on the deposition of pure (a-C:H) and tungsten-doped hydrogen-containing amorphous carbon coatings (a-C:H:W) and the detailed characterization of their chemical, cytological, mechanical and adhesion behavior. The coatings are fabricated by physical vapor deposition (PVD) and display typical DLC morphology and composition – as verified by focused ion beam scanning electron microscopy and Raman spectroscopy. Their roughness is higher than that of the plain substrates. Initial screening with contact angle and surface tension as well as in vitro testing by indirect and direct application indicate favorable cytocompatibility. The DLC coatings feature excellent mechanical properties with a substantial enhancement of indentation hardness and elastic modulus ratios. The adhesion of the coatings as determined in modified scratch tests can be considered as sufficient for the use in TKAs.

Authors with CRIS profile

Benedict Rothammer Chair of Engineering Design Kevin Neusser Chair of Engineering Design Max Marian Chair of Engineering Design Marcel Bartz Chair of Engineering Design Sebastian Krauß Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Simon Thiele
Benoit Merle Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Rainer Detsch Lehrstuhl für Werkstoffwissenschaften (Biomaterialien) Sandro Wartzack Chair of Engineering Design

Additional Organisation(s)

Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Involved external institutions

Forschungszentrum Jülich / Research Centre Jülich (FZJ) DE Germany (DE)

How to cite

APA:

Rothammer, B., Neusser, K., Marian, M., Bartz, M., Krauß, S., Böhm, T.,... Wartzack, S. (2021). Amorphous Carbon Coatings for Total Knee Replacements—Part I: Deposition, Cytocompatibility, Chemical and Mechanical Properties. Polymers, 13(12), 1 - 23. https://dx.doi.org/10.3390/polym13121952

MLA:

Rothammer, Benedict, et al. "Amorphous Carbon Coatings for Total Knee Replacements—Part I: Deposition, Cytocompatibility, Chemical and Mechanical Properties." Polymers 13.12 (2021): 1 - 23.

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