Table 3 The radiographic data at the last follow-up in 3 groups

Cobb angle of main curve (°)

42.8±18.7

52.9±22.5

32.7±14.6

<0.001

p-value (post-op vs. FU)

0.744

0.658

0.739

Coronal imbalance (mm) ^$

25.0(11.2, 43.0)

8.8(5.9, 18.3)

11.6(5.2, 18.8)

0.051^#

p-value (post-op vs. FU)

0.436

0.003^##

0.023^##

AVT (mm)

32.9±22.0

39.2±19.1

21.2±11.7

<0.001

p-value (post-op vs. FU)

0.366

0.534

0.096

PT (°)

7.8±10.6

2.2±9.0

9.7±18.3

0.169

p-value (post-op vs. FU)

0.219

0.339

0.182

PI (°)

36.8±8.3

36.2±11.1

44.2±18.1

0.079

p-value (post-op vs. FU)

0.642

0.304

0.456

SS (°)

29.0±5.9

34.0±11.5

34.5±8.0

0.185

p-value (post-op vs. FU)

0.283

0.885

0.064

LL (°)

49.5±16.6

50.3±18.3

44.7±12.1

0.162

p-value (post-op vs. FU)

0.806

0.613

0.475

TK (°)

31.2±16.2

29.8±20.0

25.4±10.2

0.193

p-value (post-op vs. FU)

0.948

0.250

0.382

SVA (mm) ^$

24.9(9.2, 31.4)

21.1(4.9, 37.4)

20.9(11.9, 39.6)

0.732^#

p-value (post-op vs. FU)

0.387

0.367

0.526^##

SK (°)

25.2±20.3

36.4±24.0

30.6±16.4

0.195

p-value (post-op vs. FU)

0.892

0.131

0.180

DAR (°/level)

16.7±7.6

23.2±10.2

15.1±6.1

<0.001

p-value (post-op vs. FU)

0.965

0.099

0.266