Table 1 Patient demographic parameters

Age^† (year)

41.24 ± 13.56

44.77 ± 12.29

Height^†(cm)

166.71 ± 7.08

157.56 ± 6.76

Weight^† (kg)

67.07 ± 14.66

57.66 ± 9.68

BMI^† (kg/m²)

24.06 ± 4.75

23.21 ± 3.58

Short side of legs

 Left

18

100

 Right

8

109

 Equal length

12

59

Limb length discrepancy^† (cm)

3.48 ± 1.71

3.27 ± 1.78

Crowe (no. [%])

 I

8

57

 II

8

53

 III

7

62

 IV

20

192

Hip (no. [%])

 Unilateral DDH hip

  Crowe I

6

25

  Crowe II

6

29

  Crowe III

7

27

  Crowe IV

14

91

 Asymmetry bilateral DDH hips

  Crowe I–II

0

2

  Crowe I–III

0

6

  Crowe I–IV

2

4

  Crowe II–III

0

6

  Crowe II–IV

0

4

  Crowe III–IV

0

9

 Symmetry bilateral DDH hips

  Crowe I–I

0

10

  Crowe II–II

1

6

  Crowe III–III

0

7

  Crowe IV–IV

2

42

Postoperative inpatient days^† (d)

 Bilateral THAs

10.40 ± 3.44

10.15 ± 5.97

 Unilateral THA

11.45 ± 6.91

9.84 ± 4.44

Hip operation history (no. [%])

8

75

Follow-up^† (mo)

124.85 ± 28.78

109.89 ± 32.35