Preoperatively | Directly after surgery | 1-year FU | 2-year FU | |
---|---|---|---|---|
Lumbar lordosis (°) | − 48.4 ± − 13.0 (range − 25.0 to − 77.0) | − 48.0 ± − 9.9 (range − 27.0 to − 73.0) P = 0.886 | − 50.6 ± − 11.2 (range − 27.0 to − 73.0) P = 0.562 | − 49.6 ± − 10.4 (range − 30.0 to − 65.0) P = 0.835 |
Pelvic incidence (°) | 63.8 ± 11.8 (range 38.0–85.0) | 61.5 ± 9.9 (range 38.0–85.0) P = 0.141 | 63.4 ± 7.5 (range 51.0–72.0) P = 0.332 | 63.3 ± 9.5 (range 40.0–76.0) P = 0.681 |
Pelvic tilt (°) | 26.8 ± 8.7 (range 10.0–40.0) | 26.8 ± 8.7 (range 10.0–40.0) P = 0.561 | 24.8 ± 6.6 (range 9.0–34.0) P = 0.018* | 23.2 ± 5.9 (range 10.0–35.0) P = 0.027* |
Sacral slope (°) | 37.3 ± 9.6 (range 20.0–56.0) | 37.3 ± 9.6 (range 20.0–56.0) P = 0.329 | 38.8 ± 6.3 (range 30.0–52.0) P = 0.244 | 40.4 ± 9.7 (range 23.0–58.0) P = 0.060 |
Sagittal segmental endplate angle of the instrumentation (°) | − 30.3 ± − 10.3 (range − 7.0 to − 50.0) | − 31.3 ± − 5.2 (range − 20.0 to − 40.0) P = 0.949 | − 31.1 ± − 7.6 (range − 15.0 to − 46.0) P = 0.609 | − 31.1 ± − 7.0 (range − 12.0 to − 43.0) P = 0.622 |
Sagittal segmental endplate angle of the dynamic segment (°) | − 18.6 ± − 6.8 (range −6.0 to − 35.0) | − 16.4 ± − 5.0 (range − 9.0 to − 30.0) P = 0.063 | 16.5 ± − 6.0 (range − 7.0 to − 30.0) P = 0.170 | − 16.1 ± − 5.5 (range − 10.0 to − 28.0) P = 0.044* |