Table 1 Demographics and clinical characteristics of the 40 patients

Age in years, mean (SD)

61.3 (10.0)

Men, n (%)

20 (50)

Body mass index, kg/m², mean (SD)

24.5 (3.6)

Years of education, n (%)

7-9 years

11 (28.2)

10-12 years

13 (33.3)

> 12 years

15 (38.5)

Work status, n (%)

At work

26 (66.7%)

Retired

10 (25.6%)

Sick-leave

3 (7.8%)

Bilateral hip-pain, n (%)

30 (75)

Minimal joint space in most painful hip, mm, mean (SD)

2.5 (0.9)

Pain duration, months, mean (SD)

49.8 (55.4)

Harris Hip Score, mean (SD)

80.7 (7.9)