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 polywear19/311/1510/31
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)