Table 2 Sagittal alignment data of the patients before surgery and 24 months after surgery
|  | Pre Operative | Post Operative (24 months of FU) | P value |
|---|---|---|---|
Parameters | |||
 SVA (mm) | 91.7 (+/− 18.2) | 42.1 (+/− 15.1) | 0.001 |
 PI | 45.6 (+/− 5.7) | 44.3 (+/− 6.1) | >  0.05 |
 PT | 27.4 (+/− 4.1) | 20.3 (+/−7.1) | 0.027 |
 SS | 18.1 (+/−3.7) | 25.2 (+/−4.3) | 0.039 |
 LL | 28.7 (+/− 7.2) | 41.6 (+/− 5.4) | < 0.001 |
 PI-LL mismatch | 17.1 (+/− 5.0) | 4.0 (+/− 3.5) | < 0.001 |
 TK | 31.0 (+/−8.9) | 31.9 (+/− 8.1) | >  0.05 |
 FOA | 12.9 (+/−1.9) | 7.8 (+/−1.1) | 0.014 |
 TPA | 30.5 (+/− 6.9) | 22.3 (+/−7.4) | < 0.001 |
 Major coronal curve | 31.8 (+/−6.4) | 14.5 (+/−3.1) | 0.003 |
Clinical Outcomes | |||
 VAS lumbar | 8.1 (+/− 1.1) | 3.9 (+/− 1.4) | 0.022 |
 VAS radicular | 7.5 (+/−1.0) | 3.4 (+/− 1.2) | 0.005 |
 ODI (%) | 49.1 (+/−7.8) | 28.2 (+/− 6.3) | 0.044 |
 SRS 22 | 3.1 (+/− 0.6) | 2.0 (+/− 0.7) | 0.021 |