Table 3.
Correlations between the follow-up SVA and the pre-/postoperative parameters
| Parameters | Coefficient, r | P value |
|---|---|---|
| Preoperative GK | 0.124 | 0.367 |
| Preoperative LL | 0.281 | 0.038* |
| Preoperative PT | 0.392 | 0.003* |
| Preoperative PI | 0.233 | 0.087 |
| Preoperative SS | -0.078 | 0.574 |
| Preoperative PI-LL | 0.437 | 0.001* |
| Preoperative TPA | 0.454 | < 0.001* |
| Preoperative SVA | 0.386 | 0.004* |
| Postoperative GK | 0.039 | 0.781 |
| Postoperative LL | 0.389 | 0.003* |
| Postoperative PT | 0.437 | 0.001* |
| Postoperative PI | 0.218 | 0.111 |
| Postoperative SS | -0.159 | 0.245 |
| Postoperative PI-LL | 0.661 | < 0.001* |
| Postoperative TPA | 0.669 | < 0.001* |
| Postoperative SVA | 0.834 | < 0.001* |
GK Global kyphosis, LL Lumbar lordosis, PT Pelvic tilt, PI Pelvic incidence, SS Sacral slope, PI-LL PI minus LL value, TPA T1 pelvic angle, SVA Sagittal vertical axis
* Indicated that the correlation was statistically significant (P < 0.05)