Table 2 Sagittal and coronal radiographic parameters in adult staged corrective surgery.

From: Predicting postoperative imbalance in adult spinal deformity staged surgery using predictive thresholds

Variable

Pre-

1st LLIF (M-)

2nd PCO/PSF (Post-)

F-

Post- vs.. Pre-

F-vs. Post-

PI-LL

39.3 ± 18

28.0 ± 17.6

7.5 ± 12.2

11.6 ± 13.6

0.001*

0.001*

LL

12 ± 16.3

24.6 ± 15.7

42.9 ± 10.8

40.7 ± 10.8

0.001*

0.002*

TK

23.5 ± 15.6

24.5 ± 15.5

34.5 ± 10.6

42.4 ± 12.6

0.001*

0.001*

SS

16.4 ± 10.6

23.2 ± 9.4

29.6 ± 8

26.4 ± 7.6

0.001*

0.001*

PT

35.1 ± 10.7

29.5 ± 10.2

20.9 ± 9.4

26 ± 10

0.001*

0.001*

C7 SVA

115.5 ± 59.3

79 ± 41.5

35.7 ± 41.1

48.3 ± 43.8

0.001*

0.001*

TPA

38.7 ± 17.2

29.9 ± 10.8

18.3 ± 8.9

23.3 ± 10.6

0.001*

0.001*

C7PL-CSVL

31.5 ± 28.8

25 ± 20.1

15.2 ± 13.6

16.8 ± 16.3

0.001*

0.195

TCC

18.9 ± 12.5

14.1 ± 10.3

4.4 ± 5.1

4.1 ± 4.5

0.001*

0.473

UCC

36.1 ± 17.6

29.7 ± 15.4

8.6 ± 8.4

7.9 ± 7.8

0.001*

0.252

LCC

18.0 ± 10.9

16.3 ± 10.1

5.7 ± 6.1

4.9 ± 5.4

0.001*

0.057

AVT

32.6 ± 20.2

32.8 ± 18.6

11.6 ± 10.8

12.6 ± 13.7

0.001*

0.194

  1. The value was listed as mean ± standard deviation.
  2. TK thoracic kyphosis; LL lumbar lordosis; PT pelvic tilt; SS sacral slope; PI pelvic incidence; TPA T1 pelvic angle; PI-LL PI minus LL mismatch, C7 SVA C7 sagittal vertical axis; TCC total coronal Cobb angle; UCC upper coronal Cobb angle; LCC lower coronal Cobb angle; C7PL-CSVL C7 coronal plumb line to central sacral vertical axis; AVT apical vertebra translation; PCO/PSF posterior column osteotomy/posterior spinal fusion; LLIF lateral lumbar interbody fusion; Pre-: reoperative to the 1st LLIF surgery; M- postoperative following the 1st LLIF surgery; Post- postoperative following the 2nd PCO/PSF surgery; F- two-year postoperative follow-up.
  3. *Indicate statistically significant.
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