Table 1 Patients’ demographics and clinical outcomes

Age (years)

62 ± 11

(36–84)

64 ± 10

(42–84)

55 ± 9

(36–68)

0.0015

Sex (M/F)

20/97

17/71

5/11

Height (cm)

154 ± 9

(126–174)

154 ± 9

(126–174)

155 ± 8

(144–167)

0.77

Weight (kg)

55 ± 10

(33–79)

55 ± 9

(33–79)

60 ± 12

(38–78)

0.0869

BMI

23 ± 4

(17–34)

23 ± 3

(17–33)

25 ± 5

(18–34)

0.0837

Follow-up period (years)

7.5 ± 1.2

(5–9.7)

7.6 ± 1.2

(5–9.7)

7.3 ± 1.2

(5–8.9)

0.3

 Primary osteoarthritis

7

5

2

 Osteoarthritis secondary to DDH

87

73

14

 Crowe classification (1,2,3,4)

52, 28, 7, 0

42, 24, 7, 0

10, 4, 0, 0

 Osteoarthritis secondary to trauma

2

2

0

 Rheumatoid arthritis

1

1

0

 Osteonecrosis

2

2

0

 Rapidly destructive coxarthropathy

3

3

0

 Trauma

2

2

0

Acetabular osteotomy (hips)

21

16

5

Femoral osteotomy (hips)

14

10

4

 Total

50 ± 12

(22–77)

51 ± 6

(43–61)

0.31

 Pain

16 ± 8

(0–30)

17 ± 7

(10–30)

0.65

 ROM

12 ± 4

(2–20)

10 ± 5

(3–20)

0.1395

 Walk

9 ± 4

(0–18)

10 ± 4

(5–15)

0.46

 ADL

12 ± 3

(4–20)

14 ± 3

(10–20)

0.0495

 Total

83 ± 11

(43–100)

82 ± 14

(55–100)

0.75

 Pain

37 ± 5

(20–40)

34 ± 6

(20–40)

0.0946

 ROM

17 ± 3

(4–20)

14 ± 5

(6–20)

0.0605

 Walk

13 ± 5

(0–20)

16 ± 4

(5–20)

0.0739

 ADL

16 ± 3

(4–20)

17 ± 3

(12–20)

0.44