Table 4.
Multivariate logistic regression of the factors associated with positive outcomes for genicular radiofrequency denervation (r2 = 40.2%)
| Variable | OR | 95% CI | P value |
|---|---|---|---|
| Prior knee surgery | 0.493 | 0.238, 1.021 | 0.057 |
| None prior surgery | 1 (Ref) | ||
| Degree of degeneration | |||
| KL ≤ 2 | 0.600 | 0.304, 1.182 | 0.140 |
| KL > 2 | 1 (Ref) | ||
| Targeted nerves | |||
| 3 nerves | 1 (Ref) | 2.291, 16.690 | < 0.001* |
| 5 nerves | 6.184 | ||
| Opioid use | 1 (Ref) | ||
| No opioid use | 2.753 | 1.405, 5.393 | 0.003* |
| Prognostic block | |||
| Yes | 2.109 | 1.038, 4.287 | 0.039* |
| No | 1 (Ref) | ||
| Lesion time (sec) | |||
| ≥ 90 | 1.017 | 0.471, 2.199 | 0.965 |
| < 90 | 1 (Ref) | ||
| Baseline NRS score | 0.920 | 0.685, 1.236 | 0.580 |
| Depression | 0.297 | 0.124, 0.713 | 0.007* |
| No depression | 1 (Ref) | ||
Three nerves consisted of superomedial, superolateral and inferomedial genicular nerves. Five nerves consisted of superomedial, superolateral and inferomedial genicular nerves, infrapatellar branch of the saphenous nerve and recurrent fibular nerve.
OR: odds ratio, CI: confidence interval, KL: Kellegren–Lawrence, NRS: numerical rating scale, Ref: reference.
*If P < 0.05, it was considered statistically significant.