Radiographic and spinopelvic parameters data.
| Variable | Mean (SD) | P Valuea | ||||
| Baseline | 3 Mo | 6 Mo | 12 Mo | 24 Mo | ||
| Spondylolisthesis, mm | 7.5 (3.7) | 4.1 (2.1) | 4.3 (2.9) | 3.4 (2.5) | 2.6 (2.8) | <0.001 at 3, 6, 12, and 24 mo |
| Anterior disc space height, mm | 7.5 (3.2) | 12.7 (2.8) | 12.5 (2.8) | 12.7 (3.0) | 13.6 (3.2) | <0.001 at 3, 6, 12, and 24 mo |
| Posterior disc space height, mm | 4.9 (2.2) | 9.0 (2.8) | 8.1 (2.5) | 8.1 (3.0) | 8.1 (2.1) | <0.001 at 3, 6, 12, and 24 mo |
| LL° | 46.5 (12.9) | 52.3 (12.9) | 52.7 (11.5) | 53.5 (12.5) | 52.6 (12.6) | <0.001 at 3, 6, 12, and 24 mo |
| Sagittal vertical axis, mm | 58.4 (24.2) | 33.5 (14.4) | 49.1 (21.0) | 45.8 (32.3) | 56.4 (38.4) | 3 mo: P < 0.001 6 mo: P = 0.074 12 mo: P = 0.087 24 mo: P = 0.948 |
| Pelvic tilt° | 20.7 (4.8) | 13.5 (9.1) | 12.7 (8.8) | 11.1 (8.1) | 9.9 (9.7) | <0.001 at 3, 6, 12, and 24 mo |
| Sacral slope° | 32.2 (8.9) | 38.9 (9.3) | 40.2 (9.4) | 41.5 (9.9) | 45.1 (8.4) | <0.001 at 3, 6, 12, and 24 mo |
| Pelvic incidence°–LL° | 6.4 (10.5) | -1.0 (15.9) | 0.0 (11.7) | −1.0 (11.2) | 2.4 (13.2) | <0.001 at 3, 6, 12, and 24 mo |
Abbreviation: LL, lumbar lordosis.
↵a Significance was determined if the P < 0.05.