From: Proximal junctional kyphosis in Lenke 5C adolescent idiopathic scoliosis after selective posterior thoracolumbar/lumbar fusion: risk factors and predictive index
Variable
PJK
Non-PJK
P
Age (years)
14.22 ± 1.45
13.50 ± 1.36
0.029
Sex
0.324
Female
22
40
Male
5
16
Risser
3.48 ± 0.80
3.79 ± 0.78
0.103
UIV
0.266
T9
7
24
T10
12
14
T11
T12
1
4
LIV
0.290
L3
L4
20
48
L5
2