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Table 4 Results of Subgroup Analysis according to the different JIC classification, collapse degree and lesion size

From: Outcomes of surgical hip dislocation combined with bone graft for adolescents and younger adults with osteonecrosis of the femoral head: a case series and literature review

 

JIC classification

Collapse degree

Lesion size

C1

C2

 ≤ 2 mm

2-4 mm

 > 4 mm

 < 15%

15–30%

 > 30%

VAS

2.29 ± 2.87

2.15 ± 2.46

3.06 ± 3.02

1.64 ± 1.86

1.00 ± 1.29

0.67 ± 1.16

2.45 ± 2.56

2.00 ± 2.69

Harris

82.71 ± 10.75

87.81 ± 10.02

82.81 ± 11.77

89.18 ± 7.73

92.00 ± 6.68

89.00 ± 10.15

85.68 ± 11.32

88.67 ± 7.75

WOMAC

18.29 ± 12.93

11.00 ± 13.14

19.19 ± 15.83*

7.91 ± 6.73

4.43 ± 5.35*

10.67 ± 11.59

13.18 ± 14.29

11.44 ± 12.24

iHOT-12

98.14 ± 14.31

101.89 ± 12.90

95.81 ± 14.77

106.45 ± 10.41

104.71 ± 8.30

109.33 ± 12.50

99.41 ± 13.71

102.44 ± 11.61

Tonnis(hips)

Grade 0

1

1

2

0

0

1

0

1

Grade 1

0

6

2

2

2

0

5

1

Grade 2

3

12

5

7

3

0

11

4

Grade 3

3

8

7

2

2

2

6

3

Pa

0.364

0.542

0.152

  1. ameans taking Fisher’s exact test
  2. *P < 0.05