Table 5 Incidence of sacral screw length < 10 mm (short sacral fixation rate)
NDS | DYS | P | |||
|---|---|---|---|---|---|
N (%) | P | N (%) | P | NDS vs. DYS | |
PS vs. MS | PS vs. MS | ||||
MS vs. DS | MS vs. DS | ||||
DS vs. PS | DS vs. PS | ||||
PS | 0 (0) | < 0.001 | 0 (0) | 0.065 | NA |
MS | 12 (11.4) | < 0.001 | 3 (8.6) | 0.002 | 0.636 |
DS | 41 (38.7) | < 0.001 | 15 (39.5) | < 0.001 | 0.931 |