Table 5 Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Harris hip score (HHS) and EQ-5D-3L—preoperative, five days and four weeks postoperatively

WOMAC (mean ± SD)

p-value

Stiffness (0–8)

PRE-OP

3.3 ± 1.8

4.4 ± 1.2

0.18

5 d POST-OP

2.2 ± 1.8

2.6 ± 2

0.84

4 w POST-OP

0.9 ± 1.1

1.3 ± 1.4

0.84

Pain (0–20)

PRE-OP

8.8 ± 4.1

10.1 ± 3

0.34

5 d POST-OP

3.1 ± 3.2

3.3 ± 4.6

0.99

4 w POST-OP

1.1 ± 1.4

1.6 ± 2.7

0.99

Physical Function (0–68)

PRE-OP

28.7 ± 9.8

36.3 ± 8.8

0.08

5 d POST-OP

13.9 ± 13.1

13.1 ± 15.6

0.48

4 w POST-OP

4.3 ± 5.8

5.6 ± 11.3

0.48

Total score (0–96)

PRE-OP

40.8 ± 14.1

49.5 ± 14.1

0.12

5 d POST-OP

14.8 ± 16.5

19 ± 20.8

0.93

4 w POST-OP

6.3 ± 7.9

8.5 ± 14.3

0.93

HHS (mean ± SD)

Pain (0–44)

PRE-OP

17.1 ± 4.9

6.4 ± 1.9

0.55

5 d POST-OP

36.6 ± 7.9

30.8 ± 14.1

0.45

4 w POST-OP

40.9 ± 4.1

42.4 ± 4.3

0.45

Walking (0–33)

PRE-OP

20.6 ± 8.8

23.1 ± 6.4

0.67

5 d POST-OP

22.3 ± 3.9

24.5 ± 7.9

0.31

4 w POST-OP

30.5 ± 2.8

32.2 ± 1.4

0.31

ADL (0–14)

PRE-OP

9.7 ± 2.6

7.8 ± 3

0.14

5 d POST-OP

8.9 ± 1.8

9.5 ± 2.7

0.8

4 w POST-OP

12.6 ± 2

12.6 ± 1.8

0.8

Total score (0–91)

PRE-OP

47.4 ± 9.8

47.3 ± 11.8

0.99

5 d POST-OP

60 ± 10.5

58 ± 25.1

0.93

4 w POST-OP

83.9 ± 7

87.2 ± 5.2

0.47

EQ-5D-3L (mean ± SD)

Flexibility (1–3)

PRE-OP

1.8 ± 0.6

1.7 ± 0.5

0.99

5 d POST-OP

1.2 ± 0.4

1.3 ± 0.5

0.64

4 w POST-OP

1 ± 0

1.1 ± 0.3

0.99

self-supply (1–3)

PRE-OP

1.2 ± 0.6

1.2 ± 0.4

0.99

5 d POST-OP

1.1 ± 0.3

1.1 ± 0.3

0.99

4 w POST-OP

1 ± 0

1.1 ± 0.3

0.99

General tasks (1–3)

PRE-OP

1.7 ± 0.7

1.8 ± 0.4

0.51

5 d POST-OP

1.5 ± 0.7

1.4 ± 0.5

0.99

4 w POST-OP

1 ± 0

1.1 ± 0.3

0.99

Pain (1–3)

PRE-OP

2.1 ± 0.3

2.2 ± 0.4

0.99

5 d POST-OP

1.3 ± 0.5

1.5 ± 0.7

0.53

4 w POST-OP

1.2 ± 0.4

1.2 ± 0.4

0.99

Anxiety (1–3)

PRE-OP

1.3 ± 0.5

1.1 ± 0.3

0.31

5 d POST-OP

1.3 ± 0.5

1 ± 0

0.21

4 w POST-OP

1 ± 0

1.1 ± 0.3

0.99