Coronal Imbalance after Selective Posterior Thoracic Fusion in Patients with Lenke 1 and 2 Adolescent Idiopathic Scoliosis
Table 5
Comparisons of postoperative radiological parameters by early postoperative decompensation in lumbar curve modifier C.
Early postoperative period
Final follow-up
Coronal Imbalance
Coronal balance
P value
Coronal Imbalance
Coronal balance
P value
(N=17)
(N=23)
(N=17)
(N=23)
PT curve (°)
15.4±8.7
16.5±7.6
0.662
16.8±11.3
16.3±9.6
0.876
MT curve (°)
17.9±7.9
18.3±8.4
0.875
19.3±5.8
20.3±6.3
0.599
TL/L curve (°)
25.5±12.3
13.7±7.2
0.001
15.7±7.8#
14.3±6.5
0.525
AVT-MT (mm)
4.5±9.4
3.7±10.9
0.803
8.3±10.2
7.6±12.3
0.845
AVT-TL/L (mm)
-15.3±12.3
-13.5±14.2
0.667
-12.7±10.9
-10.0 ±11.5
0.442
C7-CSVL(mm)
-23.5±9.7
-10.9±5.6
0.001
-13.2±6.8#
-11.5±6.7
0.419
UIV tilt (°)
6.7±7.7
5.8±9.4
0.741
7.8±9.3
7.0±11.3
0.807
LIV tilt (°)
8.0±9.2
9.3±10.7
0.679
12.4±11.4
13.5±13.2
0.777
LIV-CSVL (mm)
-5.4±7.6
-3.8±4.5
0.392
-4.5±5.0
-3.9±4.6
0.686
LIV disc angle (°)
1.1±7.3
0.8±6.5
0.888
0.9±7.8
0.7±9.8
0.943
Data represents mean and standard deviation. Negative means the measurement is located left to the reference line (CSVL). #p<0.05, when the parameters at the final follow-up are compared with those in early postoperative period. PT: proximal thoracic; MT: main thoracic; TL/L: thoracolumbar/lumbar; AVT: apical vertebral translation; CSVL: central sacral vertical line; UIV: upper instrumented vertebra; LIV: lower instrumented vertebra.
