Outcomes | Superior group | Inferior group | ||
---|---|---|---|---|
Preoperative | Last follow-up | Preoperative | Last follow-up | |
JOA | 8.6 ± 2.4 | 14.3 ± 3.8† | 8.4 ± 3.1 | 14.1 ± 3.8† |
NDI | 50.2 ± 8.6 | 16.9 ± 5.2† | 49.3 ± 5.3 | 16.3 ± 4.6† |
VAS for neck pain | 6.7 ± 1.6 | 2.9 ± 1.5† | 6.8 ± 3.3 | 2.3 ± 1.3† |
VAS for arm pain | 6.1 ± 3.2 | 1.9 ± 1.6† | 6.3 ± 1.9 | 1.6 ± 1.5† |