ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Hydroxyapatite (HA) coated total hip joint device has caused concerns of generatingwear particles after long-term implantation. We designed a pin-on-disk (POD) test to examine themorphological changes and wear particle generation of plasma sprayed HA coating in vitro. HAcoatings were immersed in supplemented α-calf bovine serum for 48 hours. Serum soaked HAcoating exhibited significant amount of weight loss due to dissolution of amorphous calciumphosphate (ACP). POD test demonstrated the serum soaked HA coatings presented many micronsizedparticles on the surface while the as-received HA coatings maintained good integrity. Thegeneration of wear particles of the serum soaked HA coatings is related to the reduction of thecohesion/adhesion of HA coatings due to the preferential dissolution of ACP
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.561.pdf
