Table 1.

Demographic patient data and preoperative diagnosis for this study.

Characteristic	Number
Number of patients (hips)	90 (97)
Gender (male/female)	36/54
Age ($\overline{\text{x}}+\text{s}$, y)	39.0 ± 8.2 (17-45)
Weight ($\overline{\text{x}}+\text{s}$, kg)	64.5 ± 9.9 (40-89)
BMI ($\overline{\text{x}}+\text{s}$, kg/m2)	23.25 ± 2.95 (16.65-30.44)
Preoperative diagnosis (number of patients/hips)
Avascular necrosis of femoral head	33/36
DDH	21/23
Posttraumatic arthritis	6/6
Ankylosing spondylitis	4/5
Femoral neck fracture	7/7
Primary degenerative arthritis	15/15
Rheumatoid arthritis	4/5

DDH, developmental dysplasia of the hip.