Table 4 Number of patients with changes in VAS scores of more than ± 2 for the three pain categories, radicular pain, neck pain and headache, separately.
| Â | Delta VAS = preoperative - postoperative | ||
|---|---|---|---|
Pain category | Worsened (≤ -2VAS) | Unchanged | Improved (≥ 2 VAS) |
Radicular pain | 16 (6.2%) | 78 (30.2%) | 164 (63.6%) |
Neck pain | 26 (10.1%) | 91 (35.3%) | 141 (54.7%) |
Headache | 41 (15.9%) | 136 (52.7%) | 81 (31.4%) |