Table 2 The spine-pelvic parameters 2 years after operation

 LL (°)

35.20 ± 9.12*

46.26 ± 9.68

54.24 ± 15.31*

 TL (°)

− 29.87 ± 16.38*

− 20.71 ± 13.82

− 11.21 ± 14.45*

 SVA > 50 mm, n%

23.33

12.50

19.23

 PI (°)

41.36 ± 12.69

44.53 ± 15.27

43.38 ± 9.85

 PT (°)

18.49 ± 13.65*

15.71 ± 10.53

23.95 ± 15.51*

 SS (°)

18.56 ± 8.47*

26.28 ± 8.55

34.36 ± 9.75*