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Table 4 Comparison analysis of the radiological parameters between the two groups

From: Proximal junctional kyphosis in Lenke 5C adolescent idiopathic scoliosis after selective posterior thoracolumbar/lumbar fusion: risk factors and predictive index

 

PJK

Non-PJK

P

Preoperative radiographical factors

   

 TC (°)

15.74 ± 5.45

18.14 ± 7.68

0.106

 TL/LC (°)

44.04 ± 2.43

46.14 ± 7.18

0.052

 TK (°)

27.89 ± 7.21

18.57 ± 8.06

< 0.001

 TLK (°)

5.93 ± 2.81

5.25 ± 3.59

0.394

 LL (°)

53.15 ± 10.52

49.29 ± 10.45

0.119

 PT (°)

10.70 ± 6.29

10.95 ± 6.67

0.875

 SS (°)

35.22 ± 5.63

35.64 ± 6.76

0.780

 PI (°)

45.93 ± 6.28

46.55 ± 5.83

0.655

 PJA (°)

5.67 ± 2.17

4.52 ± 2.10

0.024

 SVA (mm)

− 3.10 ± 32.50

− 19.31 ± 24.23

0.027

 PI-LL

− 7.22 ± 11.82

− 2.73 ± 9.13

0.061

Immediate postoperative radiographical factors

   

 TC (°)

9.48 ± 4.71

8.96 ± 2.72

0.600

 TL/LC (°)

11.30 ± 4.50

11.39 ± 4.50

0.927

 TK (°)

25.26 ± 7.37

21.86 ± 8.39

0.076

 TLK (°)

7.70 ± 2.37

6.79 ± 2.91

0.158

 LL (°)

56.00 ± 9.46

54.14 ± 7.22

0.325

 PT (°)

8.00 ± 5.704

8.61 ± 5.75

0.653

 SS (°)

38.33 ± 7.06

38.00 ± 5.05

0.827

 PI (°)

46.11 ± 6.10

46.61 ± 5.21

0.702

 PJA (°)

8.11 ± 1.91

5.11 ± 2.02

< 0.001

 SVA (mm)

− 3.18 ± 20.20

− 12.21 ± 23.06

0.086

 PI-LL

− 9.89 ± 10.06

− 7.54 ± 7.01

0.220

Radiographical factors at the last follow-up

   

 TC (°)

9.04 ± 3.37

10.57 ± 3.69

0.072

 TL/LC (°)

11.37 ± 4.19

12.07 ± 3.87

0.454

 TK (°)

29.15 ± 8.19

26.00 ± 8.97

0.128

 TLK (°)

8.89 ± 2.52

8.52 ± 2.67

0.551

 LL (°)

56.19 ± 10.07

54.96 ± 7.20

0.528

 PT (°)

10.63 ± 4.98

12.00 ± 7.34

0.384

 SS (°)

35.72 ± 6.36

34.84 ± 6.96

0.578

 PI (°)

46.36 ± 4.94

46.05 ± 5.77

0.814

 PJA (°)

16.26 ± 2.65

5.82 ± 1.85

< 0.001

 SVA (mm)

− 0.18 ± 22.08

− 14.17 ± 24.91

0.015

 PI-LL

− 9.83 ± 9.88

− 8.91 ± 7.77

0.647

HRQOL at the last follow-up

   

 Pain

4.22 ± 0.64

4.29 ± 0.49

0.621

 Appearance

3.63 ± 0.74

4.45 ± 0.69

< 0.001

 Activity

4.26 ± 0.45

4.34 ± 0.61

0.502

 Mental health

4,22 ± 0.42

4.32 ± 0.47

0.340

 Satisfaction

4.04 ± 0.52

4.18 ± 0.39

0.167

 Total score

4.07 ± 0.40

4.31 ± 0.31

0.004

  1. TC thoracic curve, TL/LC thoracolumbar/lumbar curve, TK thoracic kyphosis, TLK thoracolumbar kyphosis, LL lumbar lordosis, PT pelvic tilt, SS sacral slope, PI pelvic incidence, PJA proximal junctional angle, and SVA sagittal vertebrae axis