Table 1 Preoperative parameters comparison between Ponte group and control group

Age (year)

15.13 ± 1.57

14.50 ± 1.77

0.099

Gender

0.675

 Male

2

4

 Female

38

36

Risser sign

4.00 ± 0.85

3.80 ± 0.82

0.287

Lumbar modifier

0.198

 A

18

26

 B

16

10

 C

6

4

PT (°)

27.00 ± 3.70

25.55 ± 3.69

0.083

MT (°)

50.03 ± 4.88

48.10 ± 3.93

0.056

TL/L (°)

26.93 ± 3.23

22.40 ± 4.32

0.004

CB (mm)

 − 3.85 ± 15.24

 − 13.20 ± 13.73

0.005

RSH (mm)

 − 5.58 ± 12.47

 − 7.23 ± 12.45

0.555

FR (%)

53.66 ± 8.34

56.75 ± 7.56

0.108

CSA (°)

3.08 ± 9.77

4.48 ± 6.80

0.459

TK (°)

6.45 ± 2.95

5.30 ± 3.18

0.098

LL (°)

 − 39.58 ± 5.11

 − 36.15 ± 4.44

 < 0.001

SVA (mm)

 − 17.18 ± 12.22

 − 16.20 ± 11.42

0.446