Table 3 MacNab scores at the 12 months after surgery (n)
From: Endoscopic rhizotomy for chronic lumbar zygapophysial joint pain
MacNab scores | ERFA group | Control group | χ2 | P value |
|---|---|---|---|---|
Cases (n) | 30 | 30 | ||
Excellent | 21 | 13 | ||
Good | 8 | 8 | ||
Fair | 1 | 5 | ||
Poor | 0 | 4 | ||
The excellent and good rate | 96.70% | 70% | 7.680 | 0.006 |