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Table 1 Results of the pre- and postoperative examinations and the survival rate according to lesion size and stage (Steinberg classification).

From: Modifications to advanced Core decompression for treatment of Avascular necrosis of the femoral head

Stage

Preoperative

6 weeks

Follow-up

 

N

mHHS

VAS

mHHS

VAS

Survival

mHHS

VAS

Survival

2a

3

82.00

3.67

91.00

0

100

89.67

0.33

100

2b

13

75.57

2.92

86.43

0.83

100

82.75

0.73

84.6

2c

13

69.93

4.23

85.00

1.08

84.6

83.13

1.38

61.5

2 (all)

29

73.65

3.61

86.27

0.85

100

83.78

0.91

75.9

  1. (mHHS: Modified Harris Hip Score; VAS: Pain according to Visual Analogue Scale)