Table 5.
Perioperative VAS and AS of the IS Group and the S2AI Group.
| IS (n = 17); Mean ± SD | P a,b | S2AI (n = 46); Mean ± SD | P a,b | P a,c | |
|---|---|---|---|---|---|
| Preoperative VAS | 5.8 ± 3.1 | 5.5 ± 2.4 | .68 | ||
| Postoperative VAS | 3.2 ± 3.1 | 3.1 ± 2.6 | .99 | ||
| Change in VAS | −2.5 ± 3.6 | .03 | −2.6 ± 2.0 | <.001 | |
| Preoperative AS | 2.6 ± 0.8 | 3.2 ± 0.8 | .01 | ||
| postoperative AS | 3.1 ± 0.7 | 3.5 ± 0.8 | .11 | ||
| Change in AS | 0.5 ± 0.6 | .01 | 0.2 ± 0.4 | .04 |
Abbreviations: IS, iliac screw; S2AI, S2-alar-iliac; VAS, visual analogue scale; AS, ambulatory status.
a P values in boldface indicate statistical significance.
bMann-Whitney U test between preoperative and postoperative outcomes.
cWilcoxon signed rank test between IS and S2AI.