Clinical Study
Comparison of Conventional Polyethylene Wear and Signs of Cup Failure in Two Similar Total Hip Designs
Table 3
Incidence and polyethylene wear rates for both groups of material pairings used in this study.
| | Group 1 (CoCr heads) | Group 2 (CoCr heads) | Group 2 (Al2O3 heads) |
| Incidence of >1 mm polywear | 19/31 | 1/15 | 10/31 | Average wear rate (range) | 0.24 mm/year (0.11–0.88) | 0.09 mm/year (0.09) | 0.13 mm/year (0.08–0.25) |
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