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Comparative study of the wear of UHMWPE with zirconia ceramic and stainless steel femoral heads in artificial hip joints

✍ Scribed by B. Derbyshire; J. Fisher; D. Dowson; C. Hardaker; K. Brummitt

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 989 KB
Volume: 16
Category: Article
ISSN: 1350-4533
DOI: 10.1016/1350-4533(94)90042-6

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✦ Synopsis

Inter-

The wear of ultra high molecular weight polyethylene (UHMWPE) when sliding against Zirconia ceramic and stainless steel counterfaGes has been compared in a pin-on-plate reciprocator and in a hip joint simulutor. A lower wearfactor was found for the UHMWPE when sliding on the Zirconia ceramic counter$aces in the pin-on-plate tests. In the hip joint simulator test, the acetabular cups articulating on Zirconia hea& showed consistently lower volume changes than the cups articulating on stainless steel heads. The higher volume changes found with the stainless steel heads were associated with an increased roughness of the femoral heao!s during th tests. Z4is roughening was caused by the adherence of a rough polymer transfer film.

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