Table 1. Demographic data of the patients.

Variable	mean ± SD
Number of patients	97
Age (years)	62.2 ± 8.4
Body mass index at pre-operative period (kg/m2)	23.4 ± 3.7
Diagnosis (secondly OA due to hip dysplasia: primary OA)	94: 3
Co-morbidity Index (score)	0.3 ± 0.6
Disease duration (years)	9.1 ± 9.9
Crowe % (amount of subluxation of the hip)	21.1 ± 2.1
Crowe class (type I: II: III: IV)	75: 21: 1: 0

OA: osteoarthritis