Table 1 Single-factor analysis of AS after posterior cervical open-door laminoplasty
From: Analysis of risk factors for axial symptoms after posterior cervical open-door laminoplasty
Indicators/groups | AS group (n = 106) | Non-AS group (n = 158) | Statistic | P-value |
|---|---|---|---|---|
Age (years) | 55.1 ± 9.2 | 52.4 ± 11.6 | t = 2.009 | 0.046 |
Gender (male/female) | 66/40 | 78/80 | x2 = 4.256 | 0.039 |
Course of disease (months) | 22.8 ± 20.1 | 19.7 ± 23.0 | t = 1.128 | 0.260 |
Preoperative JOA score (points) | 9.8 ± 3.3 | 10.2 ± 3.8 | t = −0.883 | 0.378 |
Postoperative JOA score (points) | 14.6 ± 2.7 | 14.1 ± 3.3 | t = 1.296 | 0.196 |
JOA improvement rate (%) | 51.9 ± 21.4 | 56.5 ± 24.3 | t = −1.581 | 0.115 |
Wearing collar time (months) | 2.7 ± 0.9 | 2.5 ± 0.7 | t = 2.026 | 0.044 |
Postoperation early function training (examples) | 31(29.2%) | 78(49.4%) | x2 = 8.657 | 0.003 |
Surgical segments (pieces) | 3.7 ± 0.5 | 3.6 ± 0.5 | t = 1.593 | 0.112 |
Surgical time (min) | 147.9 ± 33.5 | 139.1 ± 46.3 | t = 1.683 | 0.094 |
Intraoperative bleeding volume (ml) | 384.5 ± 72.6 | 371.9 ± 63.8 | t = 1.488 | 0.138 |
intraoperative facet joints destruction (pieces) | 1.6 ± 0.8 | 1.3 ± 0.5 | t = 3.749 |  < 0.001 |
Destroy the C7 spinous process muscle insertion (cases) | 18(17.0%) | 13(8.2%) | x2 = 4.690 | 0.030 |
Preoperative cervical curvature(°) | 17.1 ± 6.7 | 18.9 ± 6.4 | t = −2.198 | 0.029 |
Postoperative cervical curvature (°) | 12.6 ± 5.1 | 13.8 ± 6.3 | t = −1.634 | 0.103 |
Loss of cervical curvature (°) | 5.9 ± 4.3 | 4.6 ± 3.8 | t = 2.583 | 0.010 |
Preoperative cervical range of motion (°) | 43.2 ± 11.9 | 45.8 ± 14.7 | t = −1.517 | 0.130 |
Postoperative cervical range of motion (°) | 28.3 ± 12.6 | 31.5 ± 15.5 | t = −1.769 | 0.078 |
Loss of cervical range of motion (°) | 16.6 ± 9.3 | 13.2 ± 7.5 | t = 3.275 | 0.001 |
Preoperative encroachment rate of anterior spinal canal (%) | 28.8 ± 4.2 | 26.4 ± 3.7 | t = 4.891 |  < 0.001 |
Opening angle (°) | 40.7 ± 5.3 | 38.8 ± 5.3 | t = 2.187 | 0.030 |