Operative details of those undergoing surgery.
| Parameter | Value (n = 167) |
| Operation new, n (%)a | |
| Posterior fusion thoracic/lumbar | 163 (97.6) |
| Decompression only | 3 (1.8) |
| Screws, mean ± SD | 5.6 ± 1.7 |
| Number of levels fused, mean ± SD | 2.7 ± 1.1 |
| Postoperative imaging, n (%) | |
| X-ray imaginga | 85 (50.9) |
| Computed tomographya | 2 (1.2) |
| Magnetic resonancea | 2 (1.2) |
↵a One missing value.