Table 3 Imaging differences between the two groups

C-Cobb (^o), mean (SD)

 Preoperative

6.37 (4.71)

6.41 (4.69)

 Six months after operation

5.50 (3.93)**

6.44 (5.05)

 Last follow-up

5.76 (4.13)

6.23 (4.35)

LL (^o), mean (SD)

 Preoperative

42.64 (12.83)

42.07 (12.16)

 Six months after operation

43.16 (11.74)

42.95 (13.26)

 Last follow-up

43.48 (12.66)

44.08 (13.39)

SL (^o), Mean (SD)

 Preoperative

13.39 (6.79)

12.23 (6.86)

 Six months after operation

13.67 (5.80)

12.27 (6.96)

 Last follow-up

13.19 (6.89)

11.75 (6.39)

C-ISH (mm), mean (SD)

 Preoperative

9.33 (2.57)

8.95 (2.40)

 Six months after operation

11.61 (1.86)**

10.87 (1.63)**

 Last follow-up

11.63 (1.72)**

10.97 (1.71)**

S-ISH (mm), mean (SD)

 Preoperative

9.49 (3.16)

9.87 (2.41)

 Six months after operation

12.50 (2.19)**

11.70 (1.78)

 Last follow-up

11.87 (2.02)**

11.16 (1.64)**

IFH (mm), mean (SD)

 Preoperative

14.02 (4.32)

15.16 (4.10)

 Six months after operation

16.93 (3.76)**

17.21 (3.68)**

 Last follow-up

15.87 (3.65)**

15.99 (3.23)**

Fusion cage sinking, n (%)

 No

62 (87.78%)

69 (93.24%)

 Yes

12(16.22%)

5 (6.76%)

Interbody fusion, n (%)

 No

1 (1.35%)

2 (2.70%)

 Yes

73 (98.65%)

72 (97.30%)