Table 2 Comparison of preoperative and the final follow-up radiographic parameters between the LBP group and non-LBP group

LL

32.6 ± 13.9

35.8 ± 8.7*

36.8 ± 10.9

42.2 ± 11.2*^, **

SL

4.1 ± 2.5

7.5 ± 3.5*

4.9 ± 3.2

8.8 ± 2.9*

TK

25.6 ± 12.2

26.3 ± 11.5

20.5 ± 11.7

24.5 ± 10.3*

C7-SVA

51.8 ± 38.9

46.1 ± 37.9*

45.1 ± 37.9

18.0 ± 28.5*^, **

PI

48.6 ± 12.2

48.6 ± 12.2

46.1 ± 8.2

46.1 ± 8.2

PT

23.9 ± 11.3

22.3 ± 10.8

19.8 ± 7.5

15.1 ± 7.3*^, **

SS

25.1 ± 9.7

26.9 ± 6.9

27.2 ± 8.9

31.7 ± 6.9*^, **

DH

8.5 ± 3.2

12.8 ± 1.9*

8.3 ± 2.1

13.1 ± 0.9*

PI-LL mismatch

19.8 ± 8.9

16.5 ± 6.8

9.8 ± 5.9

4.5 ± 3.6*^, **