| Preoperatively | 1 day Postoperatively | 6 months Postoperatively | 12 months Postoperatively | P valuea |
---|---|---|---|---|---|
VBD | |||||
 Arm-VAS | 6.70 ± 2.70 | 2.39 ± 1.90 | 1.61 ± 1.75 | 0.91 ± 1.83 | – |
 Neck-VAS | 6.39 ± 2.59 | 2.26 ± 1.88 | 1.61 ± 1.67 | 0.83 ± 1.88 | – |
 NDI | 15.30 ± 4.55 | 5.83 ± 2.64 | 2.52 ± 3.00 | 1.17 ± 2.27 | – |
 JOA | 13.00 ± 0.74 | 15.35 ± 0.71 | 16.52 ± 0.95 | 16.61 ± 0.94 | – |
 Improvement rate of JOA | – | 58.75% | 88.00% | 90.25% | – |
 Myodynamia | 4.43 ± 0.59 | – | – | 5.00 ± 0.00 | – |
SDD | |||||
 Arm-VAS | 7.39 ± 1.83 | 3.91 ± 1.56 | 3.04 ± 1.69 | 2.39 ± 1.75 | 0.008 |
 Neck-VAS | 7.09 ± 2.11 | 3.70 ± 1.69 | 2.91 ± 1.70 | 2.26 ± 1.63 | 0.008 |
 NDI | 15.78 ± 3.64 | 10.43 ± 3.59 | 6.74 ± 3.56 | 4.43 ± 4.40 | 0.003 |
 JOA | 13.43 ± 0.90 | 14.39 ± 1.16 | 14.91 ± 1.31 | 15.26 ± 1.69 | 0.002 |
 Improvement rate of JOA | – | 27.90% | 41.46% | 51.26% | 0.001 |
 Myodynamia | 4.61 ± 0.58 | – | – | 4.91 ± 0.29 | 0.15 |