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Table 5 Comparison of data between immediate postoperative and follow-up in the 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)

− 72.88 ± 29.38

− 11.78 ± 23.92

0.004***

TK (°)

18.35 ± 7.49

28.42 ± 10.87

0.033***

CL (°)

13.55 ± 10.34

31.67 ± 16.54

0.046***

LL (°)

32.63 ± 12.58

23.55 ± 14.28

0.008***

SVA (mm)

− 10.95 ± 29.01

45.3 ± 58.89

0.057

TPA (°)

20.77 ± 3.77

33.13 ± 6.03

0.002***

PI (°)

48.22 ± 10.45

50.14 ± 9.64

0.222

PT (°)

28.3 ± 4.95

37.13 ± 5.21

0.008***

SS (°)

19.92 ± 12.25

13 ± 7.23

0.040***

PJA (°)

5.62 ± 3.49

20.47 ± 7.41

0.001***

  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