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Table 3 Radiographic Parameters in UIV + 1 Group: Preoperative versus Postoperative

From: Proximal junctional fractures after long-segment instrumented fusion: comparisons between upper instrumented vertebrae and upper instrumented vertebrae + 1

Parameter

Preoperative

Postoperative

P values

PLK (degree)

 − 0.91 ± 7.35

1.28 ± 8.19

0.356

LL (degree)

26.37 ± 16.52

28.73 ± 15.32

0.627

SS (degree)

22.05 ± 7.66

23.97 ± 7.18

0.394

PT (degree)

23.27 ± 7.16

22.83 ± 7.97

0.846

PI (degree)

45.32 ± 10.78

46.80 ± 11.30

0.659

PI-LL (degree)

19.95 ± 11.94

18.07 ± 12.23

0.812

SVA (mm)

59.41 ± 24.88

55.86 ± 17.87

0.590

CS (degree)

14.37 ± 16.96

9.04 ± 15.03

0.276

Spinopelvic realignment score

1.00 ± 0.93

1.09 ± 0.97

0.752

  1. PLK proximal local kyphosis; LL lumbar lordosis; SS sacral slope; PT pelvic tilting; PI pelvic incidence; SVA sagittal vertical axis; CS Cobb’s scoliosis