Table 1.

Demographic data

Demographic	Value
Number of patients	611
Number of THAs	681
Uncemented stems	662 (97%)
Cemented stems	19 (3%)
Diagnosis (number of hips)
Osteoarthritis	627 (92%)
Osteonecrosis	34 (5%)
Femoral neck fracture	16 (2%)
Rheumatoid arthritis	3 (< 1%)
Legg-Calvé-Perthes	1 (< 1%)
Sex (number of hips)
Women	320 (47%)
Men	361 (53%)
Age at operation (years)
Average	62
Range	29–92
SD	11
Body mass index (kg/m2)
Average	32
Range	17–59
SD	6.9
Followup (months)
Average	36.5
Range	24–60
SD	1.1