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Table 1 General characteristics and radiographic parameters in patients with Lenke 5C AIS (n = 83)

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

Variables

Mean

Standard deviation

Minim

Maxim

Age (years)

13.7

1.4

12

18

Risser

3.7

0.8

2

5

Preoperative TL/LC (°)

45.5

6.1

40

67

Immediate postoperative TL/LC (°)

11.4

4.5

2

23

TL/LC at last follow-up (°)

11.9

4.0

2

22

Preoperative TC (°)

17.4

7.1

5

33

Immediate postoperative TC (°)

9.1

3.5

1

18

TC at last follow-up (°)

10.1

3.6

3

17

Preoperative TK (°)

21.6

8.9

5

38

Postoperative TK (°)

23.0

8.2

10

49

TK at last follow-up (°)

27.0

8.8

14

53

Preoperative TLK (°)

5.5

3.4

− 4

12

Postoperative TLK (°)

7.1

2.8

2

13

TLK at last follow-up (°)

8.6

2.6

3

14

Preoperative LL (°)

50.5

10.6

− 79

− 35

Postoperative LL (°)

54.8

8.0

− 81

− 38

LL at last follow-up (°)

55.4

8.2

− 81

− 38

Preoperative SVA (mm)

− 14.3

28.1

− 67

76

Postoperative SVA (mm)

− 9.3

22.5

− 54

51

SVA at last follow-up (mm)

− 9.6

24.8

− 65

59

Preoperative PJA (°)

4.6

2.1

1

9

Postoperative PJA (°)

6.1

2.4

1

12

PJA at last follow-up (°)

9.2

5.4

2

23

Preoperative PT (°)

10.9

6.5

1

31

Postoperative PT (°)

8.4

5.7

1

26

PT at last follow-up (°)

11.6

6.7

2

34

Preoperative SS (°)

35.5

6.4

23

48

Postoperative SS (°)

38.1

5.7

21

51

SS at last follow-up (°)

35.1

6.7

23

48

Preoperative PI (°)

46.4

6.0

36

59

Postoperative PI (°)

46.5

5.5

35

58

PI at last follow-up (°)

46.2

5.5

37

58

Preoperative PI-LL

− 4.2

10.2

− 27

15

Postoperative PI-LL

− 8.3

8.2

− 31

9

PI-LL at last follow-up

− 9.2

8.5

− 29

10

  1. TL/LC major thoracolumbar/lumbar curve, TC minor thoracic 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