Comparison of Conventional Polyethylene Wear and Signs of Cup Failure in Two Similar Total Hip Designs

Table 1

Patient demographical information for the different manufactured polyethylene groups with different material pairings.

	Group 1	Group 2
	CoCr	CoCr	Al203
Total cases	31	15	31
Males	13	4	17
Females	18	11	14
Median age* (range)	66 (46–86)	65 (38–81)	57 (42–77)
Diagnosis
Osteoarthritis	31	15	27
AVN**	0	0	2
Other***	0	0	2

 *Age at time of surgery.
**AVN: avascular necrosis.
***Dysplasia and rheumatoid arthritis.