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Table 4 Comparing sagittal parameters between final sagittal balance and imbalance Lenke 5 AIS patients (n = 56)

From: Coronal and sagittal balance in Lenke 5 AIS patients following posterior fusion: important role of the lowest instrument vertebrae selection

 

Imbalance (n = 18)

Balance (n = 38)

P

Age

15.7 ± 2.3

14.9 ± 2.0

0.203

Risser

3.4 ± 1.6

3.4 ± 1.3

0.861

Gender

  

0.348

 Female

10

26

 

 Male

8

12

 

PI (°)a

37.7 ± 9.4

48.0 ± 9.5

0.000

SS (°)

34.1 ± 7.2

36.7 ± 7.4

0.23

PT (°)a

3.5 ± 9.3

11.3 ± 6.1

0.001

LL(°)

50.4 ± 8.6

51.1 ± 8.5

0.764

PI-LL(°)a

−12.7 ± 12.6

−3.1 ± 7.0

0.001

TK(°)

31.9 ± 14.1

30.5 ± 11.8

0.694

SVA (mm)

−15.3 ± 29.2

−10.0 ± 21.7

0.465

LIV (level)

  

0.259

 L3

2

10

 

 L4

8

15

 

 L5

8

13

 
  1. PI pelvic incidence, PT pelvic tilt, LL lumbar lordosis, TK thoracic kyphosis, SVA sagittal vertical axis, LIV lower instrumented vertebra
  2. ameans significant different means significant different