| |
Unilateral (n = 14)
|
Bilateral (n = 18)
|
Bridged (n = 16)
|
P value
|
Beak (n = 19)
|
Round (n = 29)
|
P value
|
|---|
|
COR, mean ± SD, %
|
22.68 ± 5.54
|
38.42 ± 9.69
|
41.63 ± 9.13
|
< 0.001*
|
31.66 ± 10.06
|
37.02 ± 12.15
|
0.117
|
|
umCOR, mean ± SD, %
|
45.36 ± 11.09
|
47.41 ± 13.60
|
51.23 ± 14.57
|
0.470
|
47.12 ± 13.72
|
48.72 ± 13.06
|
0.685
|
|
OLF level
|
|
T1–T4, no. (%)
|
1 (7.1)
|
3 (14.7)
|
4 (25.0)
|
0.323
|
2 (10.5)
|
4 (13.8)
|
0.906
|
|
T5–T9, no. (%)
|
2 (14.3)
|
1 (5.56)
|
4 (25.0)
| |
3 (15.8)
|
6 (20.7)
| |
|
T10–T12, no. (%)
|
11 (78.6)
|
14 (77.8)
|
8 (50.0)
| |
14 (73.7)
|
19 (65.5)
| |
|
Intramedullary signal change on T2WI, no. (%)
|
7 (50.0)
|
12 (66.7)
|
11 (68.8)
|
0.513
|
13 (68.4)
|
17 (58.6)
|
0.493
|
|
DO, no. (%)
|
2 (14.3)
|
5 (27.8)
|
5 (31.3)
|
0.545
|
4 (21.1)
|
7 (24.1)
|
0.804
|
|
Surgical methods
| | | | | | | |
|
Posterior decompression, no. (%)
|
8 (57.1)
|
6 (33.3)
|
3 (18.8)
|
0.880
|
8 (42.11)
|
9 (31.0)
|
0.433
|
|
Posterior decompression with fusion, no. (%)
|
6 (42.9)
|
12 (66.7)
|
13 (81.3)
|
–
|
11 (57.9)
|
20 (69.0)
|
–
|
- COR canal occupation rate, umCOR unilateral maximum of canal occupation, DO dural ossifification, SD standard deviation
