Natural History of Postoperative Adding-On in Adolescent Idiopathic Scoliosis: What Are the Risk Factors for Progressive Adding-On?
Table 2
Postoperative radiographical data.
Progressive
Nonprogressive
PT curve (°)
16.15 ± 5.82
15.03 ± 6.35
0.245
Correction rate (%)
44.19 ± 21.12
45.91 ± 19.27
0.372
MT curve (°)
12.94 ± 6.75
11.96 ± 5.31
0.265
Correction rate (%)
74.38 ± 12.02
75.79 ± 8.98
0.301
Lumbar curve (°)
8.78 ± 4.89
8.54 ± 3.91
0.416
Correction rate (%)
60.83 ± 21.59
63.53 ± 18.12
0.301
Thoracic kyphosis (°)
17.36 ± 6.04
16.99 ± 7.24
0.418
Lumbar lordosis (°)
48.47 ± 9.74
46.93 ± 9.18
0.267
Coronal balance (mm)
12.94 ± 11.39
14.13 ± 10.04
0.335
Sagittal balance (mm)
27.95 ± 16.93
26.13 ± 18.32
0.349
Apical translation (mm)
15.04 ± 8.45
17.94 ± 11.32
0.143
Clavicle angle (°)
1.89 ± 1.21
2.02 ± 1.32
0.349
T1 tilt angle (°)
5.57 ± 3.12
5.84 ± 3.83
0.387
Trunk shift (mm)
12.32 ± 8.13
13.03 ± 9.14
0.379
RSH
L > R
9
3
0.003
L = R
13
19
L < R
2
15
All postoperative parameters were measured immediately after operation. RSH = left shoulder height – right shoulder height; L > R defined as left shoulder height – right shoulder height > 10 mm; L = R defined as 10 mm ≥ left shoulder height – right shoulder height ≥ −10 mm; L < R defined as left shoulder height – right shoulder height ≤ −10 mm.
