More Americans Are Getting Knee Replacements

2010 ◽  
Vol 43 (17) ◽  
pp. 20
Author(s):  
MITCHEL L. ZOLER
Keyword(s):  
Knee Replacements

scholarly journals Towards the understanding of lubrication mechanisms in total knee replacements – Part I: Experimental investigations

2021 ◽  
Vol 156 ◽  
pp. 106874 ◽  
Author(s):  
David Nečas ◽  
Martin Vrbka ◽  
Max Marian ◽  
Benedict Rothammer ◽  
Stephan Tremmel ◽  
...  
Keyword(s):  
Experimental Investigations ◽  
Total Knee Replacements ◽  
Knee Replacements ◽  
Total Knee ◽  
Lubrication Mechanisms

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

Polymers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1952
Author(s):  
Benedict Rothammer ◽  
Kevin Neusser ◽  
Max Marian ◽  
Marcel Bartz ◽  
Sebastian Krauß ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Amorphous Carbon ◽  
Detailed Characterization ◽  
Carbon Coatings ◽  
Dlc Coatings ◽  
Total Knee Replacements ◽  
Knee Replacements ◽  
Total Knee ◽  
Amorphous Carbon Coatings

Diamond-like carbon (DLC) coatings have the potential to reduce implant wear and thus to contribute to avoiding premature failure and increase 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.

The effect of contact area on wear in relation to fixed bearing and mobile bearing knee replacements

2001 ◽  
Vol 58 (3) ◽  
pp. 282-290 ◽  
Author(s):  
Shivani Sathasivam ◽  
Peter S. Walker ◽  
Patricia A. Campbell ◽  
Keith Rayner
Keyword(s):  
Contact Area ◽  
Mobile Bearing ◽  
Fixed Bearing ◽  
Knee Replacements
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