Table 1 Baseline characteristics of all recruited patients

Age (years)

43.3 ± 7.4

43.2 ± 8.7

0.965

Gender (male/female)

38/6

112/17

0.938

Body mass index (kg/m²)

24.5 ± 4.5

24 ± 3.7

0.512

Etiology

0.312

 Alcohol abuse

31

82

 Corticosteroid use

8

19

 Idiopathic

5

28

Ficat classification

0.741

 Stage I

4

14

 Stage IIA

40

115

ARCO classification

< .001

 IA

2

6

 IB

2

7

 IC

0

1

 IIA

4

63

 IIB

10

41

 IIC

26

11

Symptom

< .001

 Acute onset of symptom

14

23

 Asymptomatic

24

79

 Delayed onset of symptom

6

27

Necrotic location

< .001

 A

1

22

 B

3

45

 C1

15

51

 C2

25

11

Necrotic angle

< .001

 < 200°

5

74

 200–249°

10

36

 250–299°

18

12

 > 299°

11

7

BME before CD

< .001

 No

29

116

 Yes

15

13

Bone grafting (no. of hips)

0.542

 No

25

80

 Yes

19

49

Triglyceride

2.05 ± 1.16

1.95 ± 1.17

0.611

Total cholesterol

4.50 ± 0.80

4.66 ± 0.92

0.305

White blood cell

6.6 ± 2

6.7 ± 1.9

0.857

Hemoglobin

138.0 ± 12.1

140.0 ± 16.8

0.493

Platelet

188.8 ± 53.5

186.3 ± 49.9

0.787

Antithrombin III

93 ± 11.9

92.5 ± 10.7

0.789