Table 1 Comparison of preoperative and postoperative sagittal parameters and function recovery between the lordosis group and kyphotic group

LL(°)

Preoperative

-30.9 ± 19.4

13.1 ± 11.1

 < 0.001

Final follow-up

-45.5 ± 7.5

-43.2 ± 8.4

0.431

P value

0.002

 < 0.001

TK(°)

Preoperative

50.7 ± 9.9

51.7 ± 7.5

0.954

Final follow-up

49.3 ± 8.7

49.2 ± 10.3

0.535

P value

0.684

0.536

GK(°)

Preoperative

76.2 ± 18.4

87.5 ± 31.2

0.352

Final follow-up

51.5 ± 6.8

54.6 ± 12.3

0.284

P value

 < 0.001

0.005

SVA(mm)

Preoperative

169.1 ± 89.1

218.5 ± 67.8

0.142

Final follow-up

53.2 ± 19.1

65.5 ± 17.8

0.075

P value

 < 0.001

 < 0.001

PT(°)

Preoperative

39.1 ± 13.4

37.5 ± 15.2

0.813

Final follow-up

24.8 ± 9.6

23.4 ± 11.1

0.956

P value

 < 0.001

 < 0.001

PI(°)

Preoperative

65.6 ± 16.5

52.6 ± 17.1

0.254

Final follow-up

59.8 ± 15.1

54.1 ± 12.1

0.501

P value

0.063

0.665

SS(°)

Preoperative

26.4 ± 7.9

15.2 ± 9.5

0.002

Final follow-up

34.8 ± 7.5

30.6 ± 6.4

0.073

P value

0.004

0.001

CBVA(°)

Preoperative

28.2 ± 17.1

34.4 ± 30.2

0.536

Final follow-up

13.2 ± 7.5

13.6 ± 3.3

0.765

P value

 < 0.001

0.047

JOA

Preoperative

13.4 ± 3.1

11.6 ± 3.1

0.646

Final follow-up

23.0 ± 2.2

23.3 ± 2.3

0.406

P value

 < 0.001

 < 0.001

VAS

Preoperative

7.8 ± 0.9

7.1 ± 1.2

0.168

Final follow-up

1.8 ± 0.5

1.6 ± 0.4

0.463

P value

 < 0.001

 < 0.001

ODI

Preoperative

32.9 ± 10.1

25.8 ± 8.2

0.128

Final follow-up

16.1 ± 6.4

15.1 ± 6.9

0.865

P value

 < 0.001

0.001