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Table 6 Comparison of data between immediate postoperative and follow-up in the no PJK group

From: Proximal junctional kyphosis is a compensation for post-operative negative C2-FH in ASD patients: a cross-sectional study

Parameters

Immediate postoperative

Follow up

p value

C2-FH (mm)

− 36.64 ± 24.03

− 17.96 ± 12.24

0.022***

TK (°)

24.77 ± 11.09

26.38 ± 14.79

0.433

CL (°)

18.55 ± 13.04

20.03 ± 11.71

0.678

LL (°)

42.62 ± 11.44

38.84 ± 13.25

0.127

SVA (mm)

0.76 ± 16.48

18.21 ± 23.55

0.068

TPA (°)

13.45 ± 4.88

16.81 ± 5.74

0.068

PI (°)

50.07 ± 8.15

49.84 ± 7.71

0.662

PT (°)

19.91 ± 5.18

22.02 ± 5

0.202

SS (°)

30.16 ± 9.6

27.82 ± 8.4

0.144

PJA (°)

3.1 ± 7.96

9.92 ± 8.91

0.338

  1. C2-FH the distance between C2 vertical line to the femoral heads, CL cervical lordosis, TK thoracic kyphosis, LL lumbar lordosis, PT pelvic tilt, PI pelvic incidence, SS sacral slope, SVA sagittal vertical axis, TPA T1-Pelvic angle, PJA proximal junctional angle, *** p<0.05