Table 5.
Difference of Patients’ Radiological Evaluations Classified by PI-LL.
| PI-LL <10° | PI-LL ≥10° | P | |
|---|---|---|---|
| Number of patients | 10 | 13 | |
| PI | |||
| Preoperative | 46.9 ± 7.4 | 54.5 ± 6.7 | .02 |
| Postoperative | 46.7 ± 7.8 | 54.2 ± 8.0 | .04 |
| Last follow-up | 48.2 ± 9.2 | 54.4 ± 6.7 | .07 |
| PT | |||
| Preoperative | 35.7 ± 10.9 | 38.6 ± 10.4 | .53 |
| Postoperative | 20.4 ± 8.1 | 27.5 ± 7.0 | .03 |
| Last follow-up | 21.2 ± 9.2 | 30.5 ± 9.9 | .03 |
| LL | |||
| Preoperative | 17.0 ± 24.1 | 3.7 ± 15.4 | .13 |
| Postoperative | 43.6 ± 6.3 | 35.3 ± 10.3 | .03 |
| Last follow-up | 44.9 ± 8.7 | 32.6 ± 13.1 | .01 |
| TK | |||
| Preoperative | 34.7 ± 16.2 | 24.9 ± 14.2 | .15 |
| Postoperative | 40.5 ±12.2 | 31.4 ± 6.0 | .05 |
| Last follow-up | 45.9 ± 13.6 | 35.5 ± 13.0 | .08 |
| PI-LL | |||
| Preoperative | 29.9 ± 24.4 | 50.8 ± 14.5 | .02 |
| Postoperative | 3.1 ± 5.7 | 17.3 ± 7.7 | <.01 |
| Last follow-up | 3.3 ± 4.6 | 20.4 ± 10.4 | <.01 |
| SVA | |||
| Preoperative | 129.0 ± 64.4 | 137.8 ± 49.1 | .72 |
| Postoperative | 42.3 ± 28.6 | 58.8 ± 48.0 | .35 |
| Last follow-up | 54.8 ± 48.7 | 82.6 ± 65.4 | .27 |
| C7-CSVL | |||
| Preoperative | 33.5 ± 26.5 | 36.5 ± 30.6 | .81 |
| Postoperative | 19.8 ± 13.3 | 19.2 ± 10.9 | .91 |
| Last follow-up | 20.7 ± 18.4 | 19.0 ± 13.8 | .80 |
| Loosening of S2 alar screw | +6, −4 | +7, −6 | .77 |
| L5-S1 angle | |||
| Preoperative | 11.0 ± 8.2 | 7.6 ± 6.1 | .27 |
| Postoperative | 9.7 ± 4.0 | 5.5 ± 2.9 | .01 |
| Last follow-up | 8.8 ± 4.0 | 3.5 ± 4.4 | <.01 |
Abbreviations: PI, pelvic incidence; LL, lumbar lordosis; PT, pelvic tilt; TK, thoracic kyphosis; SVA, sagittal vertical axis; CSVL, central sacral vertical line.
Boldface indicates significant difference with P value < .05.