Abstract
The weight gain due to fluid absorption was measured in γ-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 mg (average ± standard deviation) for the unsterilized polyethylene cups, 2.81 ± 0.95 mg for the γ-sterilized polyethylene cups and 1.51 ± 0.34 for the ETO gas-sterilized polyethylene cups. There was little difference in fluid absorption between the sterilized and unsterilized specimens. In particular, the γ-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.
| Original language | English |
|---|---|
| Pages (from-to) | 107-112 |
| Number of pages | 6 |
| Journal | Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine |
| Volume | 215 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2001 |
Keywords
- Fluid absorption
- Hip simulator
- Polyethylene absorption
- Serum absorption
- Water absorption
ASJC Scopus subject areas
- Biomedical Engineering
- Mechanical Engineering
- Medicine(all)