Summary of outcome variables.
| Outcomes | Total Sample N = 117 |
| Complications, n (%) | |
| Mechanical complications | 70 (59.8) |
| Proximal junctional kyphosis | 41 (35.0) |
| Proximal junctional failure | 26 (22.2) |
| Rod fracture/pseudarthrosis | 46 (39.3) |
| Distal junctional kyphosis | 1 (0.9) |
| Implant related | 8 (6.8) |
| Reoperations | 54 (46.2) |
| Postoperative radiographic measurements, mean ± SD | |
| Pelvic tilt | 23.9 ± 9.2 |
| Thoracic kyphosis | 40.9 ± 14.4 |
| Sagittal vertical axis | 66.3 ± 58.4 |
| Coronal vertical axis | 19.2 ± 17.5 |
| Pelvic incidence lumbar lordosis mismatch | 11.3 ± 14.2 |
| L1–S1 lordosis | 40.3 ± 14.4 |
| L4–S1 lordosis | 26.9 ± 9.1 |
| Lordosis distribution index | 70.1 ± 29.1 |
| Sagittal vertical axis correction | 47.9 ± 41.97 |
| Coronal vertical axis correction | 29.2 ± 30.8 |
| Patient-reported outcome measures, n (%) | |
| MCID NRS-Back | 47 (51.1) |
| MCID NRS-Leg | 59 (68.6) |
| MCID Oswestry Disability Index | 51 (55.4) |
Abbreviations: MCID, minimal clinically important difference; NRS, Numeric Rating Scale.