Perfect-C (n = 41) | Zero-P (n = 36) | Plate-Cage (n = 71) | P-value | |
---|---|---|---|---|
Cervical alignment (°) | ||||
Preoperation | 12.39 ± 6.78 | 12.49 ± 7.06 | 14.11 ± 9.24 | 0.457 |
Postoperation | 17.35 ± 7.87# | 16.47 ± 8.03# | 15.28 ± 9.6# | 0.471 |
Last follow-up | 20.57 ± 8.54# | 18.41 ± 8.11# | 17.76 ± 9.85# | 0.455 |
Segmental angle (°) | ||||
Preoperation | 5.81 ± 3.8 | 4.94 ± 3.89 | 4.59 ± 3.98 | 0.285 |
Postoperation | 6.1 ± 4.49# | 5.25 ± 3.15# | 5.41 ± 3.07# | 0.514 |
Last follow-up | 6.59 ± 6.17# | 5.34 ± 3.69# | 5.34 ± 3.06# | 0.294 |
Intervertebral height (mm) | ||||
Preoperation | 5.48 ± 1.48 | 5.93 ± 1.01 | 5.75 ± 1.21 | 0.284 |
Postoperation | 7.81 ± 1.31# | 7.56 ± 1.01# | 7.62 ± 1.12# | 0.58 |
Last follow-up | 6.77 ± 1.49# | 6.48 ± 1.17# | 6.22 ± 1.14# | 0.082 |
Subsidence | 5 (14%) | 9 (25%) | 15 (21%) | 0.546 |
Fusion | 37 (90%) | 31 (86%) | 68 (95%) | 0.284 |
Prevertebral soft-tissue | ||||
Thickness (mm) | ||||
Preoperation | 15.27 ± 2.88 | 12.17 ± 3.32 | 13.15 ± 3.29 | |
Postoperation | 18.59 ± 3.34# | 15.4 ± 3.63# | 18.97 ± 3.91# | |
Last follow-up | 14.91 ± 2.96# | 11.86 ± 3.1# | 15.01 ± 3.95# | |
PDD (Cephalad, mm) | 10.52 ± 2.12 | 13.72 ± 2.11 | 5.33 ± 2.09 | < 0.001* |
PDD (Caudal, mm) | 11.83 ± 2.31 | 14.89 ± 1.58 | 6.03 ± 1.99 | < 0.001* |
PDD / ABH (Cephalad) | 0.74 ± 0.09 | 1 | 0.38 ± 0.12 | < 0.001* |
PDD / ABH (Caudal) | 0.77 ± 0.05 | 1 | 0.39 ± 0.11 | < 0.001* |
HO | 0 | 0 | 21 (30%) | < 0.001* |