Imaging review.
| Adult Spinal Deformity | Group A, n (%) | Group B, n (%) |
| Scoliosis | 33 (80) | 54 (70) |
| Severe scoliosis (>20°) | 2 (5) | 4 (5) |
| Loss of sagittal balance | 3 (7) | 9 (12) |
| Spondylolisthesis | 39 (95) | 54 (70) |
| Spondylolisthesis + mobility | 0 | 22 (29) |
| Stenosis | 12 (29) | 33 (43) |
| Previous laminectomy | 7 (17) | 17 (22) |
| Previous fusion | 0 | 10 (13) |
| Previous vertebroplasty | 1 (2) | 1 (1) |