Table 3 Surgical data of patients divided by axial ossification type and sagittal ossification type
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) | – |