Fluid absorption study in ultra-high molecular weight polyethylene( UHMWPE) sterilized and unsterilized acetabular cups

Authors
Affatato, S Vandelli, C Bordini, B Toni, A
Citation
S. Affatato et al., Fluid absorption study in ultra-high molecular weight polyethylene( UHMWPE) sterilized and unsterilized acetabular cups, P I MEC E H, 215(H1), 2001, pp. 107-111
Citations number
18
Categorie Soggetti
Mechanical Engineering
Journal title
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART H-JOURNAL OF ENGINEERING IN MEDICINE
ISSN journal
09544119 → ACNP
Volume
215
Issue
H1
Year of publication
2001
Pages
107 - 111
Database
ISI
SICI code
0954-4119(2001)215:H1<107:FASIUM>2.0.ZU;2-H
Abstract
The weight gain due to fluid absorption was measured in gamma -sterilized, ethylene oxide (ETO) gas-sterilized, and unsterilized ultra-high molecular weight (UHMW) polyethylene acetabular cups. After about 2 months the total average fluid absorption gain of the polyethylene cups was: 1.76 +/- 0.45 m g (average +/- standard deviation) for the unsterilized polyethylene cups, 2.81 +/- 0.95 mg for the gamma -sterilized polyethylene cups and 1.51 +/- 0 .34 for the ETO gas-sterilized polyethylene cups. There was little differen ce in fluid absorption between the sterilized and unsterilized specimens. I n particular, the gamma -sterilized acetabular cups absorbed more than the ETO gas-sterilized and the unsterilized cups. However, the weight gain was higher in serum compared with that in water.