Table 2 The pre-and post- radiological parameters between the four groups

Cobb’s angle of main curve

Preoperative

13.59 ± 4.87

28.50 ± 17.60

13.44 ± 3.81

26.50 ± 4.68

Follow-up

5.87 ± 4.98

24.00 ± 14.91

4.22 ± 5.51

8.66 ± 4.50

P values

<0.001

0.09

<0.001

0.002

Cobb’s angle of compensatory curve

Preoperative

5.31 ± 5.15

13.75 ± 6.55

2.56 ± 1.74

15.33 ± 1.63

Follow-up

1.68 ± 2.69

8.03 ± 2.57

1.05 ± 0.32

3.48 ± 2.28

P values

<0.001

0.16

0.005

<0.001

Scoliosis W/AL ratio

Preoperative

0.34 ± 0.04

0.49 ± 0.09

0.35 ± 0.02

0.43 ± 0.03

Follow-up

0.29 ± 0.03

0.42 ± 0.03

0.30 ± 0.02

0.31 ± 0.03

P values

<0.001

0.19

<0.001

0.001