Group | Cases | Distance of retroposition of the spinal cord (mm) | Cervical lordosis | ||
---|---|---|---|---|---|
Preoperative | Last follow-up | t and p value | |||
A | 35 | 3.63 ± 2.06 | 19.55 ± 6.81 | 16.78 ± 7.92 | t = 1.536, p = 0.142 |
B | 38 | 2.05 ± 0.93 | 18.94 ± 8.73 | 18.22 ± 5.79 | t = 1.784, p = 0.089 |
t and p value | t = 7.256, p < 0.001 | t = 0.223, p = 0.854 | t = 0.359, p = 0.782 |