In vivo wear performance of highly cross-linked polyethylene vs. yttria stabilized zirconia and alumina stabilized zirconia at a mean seven-year follow-up

Table 1 Demographic characteristics of two groups

	All	PSZ	ASZ	P value
Number of Hips	91	23	68
Gender (men/women)	8/83	2/21	6/62	>0.999
Age (years)	59	64	57	0.02
Body Mass Index (kg/m2)	23.4	24.1	23.2	0.32
Diagnosis
Osteoarthritis	75	16	58	0.21
ION	10	5	6
Rheumatoid Arthritis	6	2	4
Polyethylene Thickness (mm)	11	10.7	11.5	0.020

ISSN: 1471-2474