ISSN:
0021-9304
Keywords:
wear
;
polyethylene
;
prosthetic joint
;
pin-on-disk wear testing
;
hip joint simulator
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Medicine
,
Technology
Notes:
A realistic pin-on-disk wear test method for prosthetic joint materials has been developed. The new method, called circularly translating pin-on-disk (CTPOD), yields wear rates and wear mechanisms similar to those observed in retrieved polyethylene acetabular cups. In the established methods, where a polyethylene specimen slides against a unidirectionally rotating, or reciprocating, metallic or ceramic counterface, the wear rate typically is two orders of magnitude too low. In the present study, also, the reciprocator gave negligible wear. In the CTPOD method, considerable wear occurs because the direction of sliding rotates relative to the polyethylene pin, hence, the molecular orientation effect of polyethylene is avoided. © 1998 John Wiley & Sons, Inc. J Biomed Mater Res, 41, 58-64, 1998.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
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