Table 3 Comparison of the imaging features between the three groups (x ± s)

Preoperation Cobb angle (°)

25.3 ± 7.1

26.7 ± 5.6

29.1 ± 4.8

0.247

0.287

0.391

Postoperation Cobb angle (°)

15.5 ± 4.1

15.1 ± 2.4

14.5 ± 2.9

0.133

0.732

0.386

Follow-up end Cobb angle (°)

16.9 ± 4.4

15.5 ± 2.9

16.2 ± 4.0

0.248

0.725

0.486

Preoperative height (cm)

10.6 ± 1.8

11.1 ± 1.5

11.2 ± 1.6

0.972

0.799

0.879

Postoperative height (cm)

14.1 ± 1.3

13.9 ± 1.4

13.9 ± 1.5

0.195

0.985

0.907

Correction height (cm)

3.3 ± 0.8

2.9 ± 1.1

3.3 ± 1.8

0.467

0.413

0.585

Follow-up end height (cm)

12.6 ± 1.5

12.0 ± 1.5

11.9 ± 1.5

0.939

0.528

0.796

Loss height (cm)

1.5 ± 0.5

1.9 ± 1.1

1.9 ± 0.7

0.953

0.066

0.323