Coronal Imbalance after Selective Posterior Thoracic Fusion in Patients with Lenke 1 and 2 Adolescent Idiopathic Scoliosis
Table 3
Comparisons of postoperative radiological parameters by early postoperative decompensation in lumbar curve modifier A.
Early postoperative period
Final follow-up
Coronal Imbalance
Coronal balance
P value
Coronal Imbalance
Coronal balance
P value
(N=16)
(N=30)
(N=16)
(N=30)
PT curve (°)
9.7±7.5
10.8±6.8
0.604
10.2±9.8
10.5±7.9
0.908
MT curve (°)
15.4±8.3
13.7±9.6
0.536
16.2±7.3
13.9±8.5
0.345
TL/L curve (°)
17.3±8.7
15.9±6.6
0.531
17.5±9.0
17.0±10.2
0.865
AVT-MT (mm)
3.7±6.8
3.5±8.4
0.932
4.5±7.8
3.8±9.4
0.792
AVT-TL/L (mm)
4.5±7.6
6.5±9.5
0.452
6.7±9.3
7.4 ±9.5
0.804
C7-CSVL (mm)
22.4±15.5
8.6±12.3
0.001
11.6±7.5#
8.1±5.9
0.079
UIV tilt (°)
3.8±6.8
4.3±5.9
0.790
3.7±7.3
4.6±5.0
0.615
LIV tilt (°)
6.5±11.2
5.4±8.7
0.705
6.9±10.8
6.0±9.3
0.761
LIV-CSVL (mm)
3.4±8.9
2.5±7.6
0.711
13.7±15.5#
5.3±9.3
0.023
LIV disc angle (°)
0.9±1.5
0.7±3.4
0.815
6.7±9.2#
1.2±7.8
0.032
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.
