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Table 2 HHS, WOMAC total and subscale scores in both groups

From: A comparative study of cortico-cancellous iliac bone graft with or without the combination of vascularized greater trochanter flap for the management of femoral head osteonecrosis: a minimum 6 years follow-up

Parameters

Group A

Group B

p value for intergroup

Mean ± SD

p value for intragroup

Mean ± SD

p value for intragroup

Pre-HHS

50.57

±

3.38

< 0.001 *

50.24

±

3.30

< 0.001 *

0.017*

Post-HHS

87.60

±

4.15

85.18

±

6.45

Pre-WOMAC

90.52

±

8.22

< 0.001 *

87.00

±

7.98

< 0.001 *

< 0.001 *

Post-WOMAC

36.75

±

6.70

39.90

±

5.55

Pre-pain

11.68

±

2.37

< 0.001 *

11.33

±

2.73

< 0.001 *

0.402

Post-pain

1.96

±

1.28

1.88

±

1.29

Pre-stiffness

11.17

±

2.16

< 0.001 *

12.63

±

1.44

< 0.001 *

< 0.001 *

Post-stiffness

2.99

±

2.16

2.90

±

1.32

Pre-difficulty

68.12

±

5.05

< 0.001 *

68.53

±

4.30

< 0.001 *

0.008*

Post-difficulty

32.63

±

4.14

35.29

±

3.00

  1. HHS Harris Hip Score, WOMAC Western Ontario and McMaster University Index. Wilcoxon test was used for preoperative and the last postoperative intra-groups comparison, while Mann-Whitney U test was used for intergroup and delta difference comparison