Table 4 Comparison of spinopelvic parameters between staged group and control group

Preoperative

 Cobb(°)

38.2±4.67

39.75±5.07

0.31

 CBD(cm)

4.68±1.09

4.25±1.16

0.21

 SVA(cm)

7.77±1.15

7.46±1.03

0.34

 LL(°)

11.36±11.71

12.25±11.82

0.81

 PT(°)

29.48±4.4

32.3±6.06

0.08

 PI(°)

49.4±4.9

49.6±5.1

0.87

 PI/LL(°)

38±12.08

37.35±12.6

0.86

Postoperative

 Cobb(°)

11.0±3.76

13.9±5.4

0.04

 CBD(cm)

1.8±0.62

1.6±0.59

0.28

 SVA(cm)

2.85±0.97

2.57±1.06

0.36

 LL(°)

42.44±6.08

43.05±6.03

0.74

 PT(°)

16.68±3.39

18.7±4.23

0.08

 PI/LL(°)

6.9±8.0

6.55±7.86

0.88

Final follow-up

 Cobb(°)

13.2±4.4

15.9±0.55

0.07

 CBD(cm)

1.9±0.67

1.7±0.57

0.43

 SVA(cm)

3.5±1.02

3.08±1.22

0.19

 LL(°)

37.6±8.25

38.1±6.64

0.84

 PT(°)

18.44±3.37

19.46±4.45

0.39

 PI/LL(°)

11.72±9.42

11.5±7.88

0.93