Table 1 Summary of demographic data and baseline radiographic parameters of the included patients

Age at surgery (yrs)

15.4 ± 1.8

12–18

Male: Female

13: 33

-

Risser grade at surgery

4.0 ± 1.1

0–5

Fusion levels

6.1 ± 0.7

5–7

Operative time (min)

204.9 ± 37.2

130–300

Estimated blood loss (ml)

528.5 ± 175.7

300–1000

Follow-up(months)

33.5 ± 16.1

24–72

LIV location

 L2

2

-

 L3

24

-

 L4

20

-

Baseline radiographic parameters

 TL/L curve(°)

47.7 ± 6.9

40.0–64.0

 T curve(°)

25.2 ± 5.9

4.0–46.0

 LIV tilt(°)

25.9 ± 7.3

14.0–40.0

 LIV disc angle(°)

8.0 ± 4.7

1.0–23.0

 LIV translation(mm)

22.4 ± 8.5

7.7–50.0

 LIV + 1 translation(mm)

8.5 ± 6.3

0–31.0

 Coronal imbalance(mm)

23.0 ± 12.4

0–50.0