Table 1 Patient demographics

Number of patients

26,401

Women

56.7%

Age at surgery, mean (range)

65.8 (11–96) yrs

Weight at surgery, mean (range)

75.9 (30–178) kg

BMI at surgery

 Underweight (< 19 kg/m²)

1.1%

 Normal (19–24.9 kg/m²)

31.2%

 Overweight (25–29.9 kg/m²)

45.2%

 Obese (≥ 30 kg/m²)

22.5%

Indication for hip replacement

Primary osteoarthritis 72.8%

Femoral neck fracture sequelae 12.7%

Sequelae of development dysplasia 7.5%

Idiopathic femoral head necrosis 5.4%

Rheumatic Arthritis 0.7%

Other 0.9%

Follow-up, mean (range)

5.2 (0.1–15.6) yrs