Comparison Changes of VAS and WOMAC Scores
| Variable | US-guided GNB | Blind GNB | ||
|---|---|---|---|---|
| VAS | 1 mo-baseline | –32.0 ± 6.1 | –26.0 ± 5.5 | 0.58 |
| 3 mo-1 mo | 12.0 ± 7.4 | 8.8 ± 5.1 | 0.78 | |
| 3 mo-baseline | –20.0 ± 4.5 | –17.3 ± 5.8 | 0.43 | |
| WOMAC-pain | 1 mo-baseline | –1.25 ± 0.72 | –2.11 ± 0.96 | 0.39 |
| 3 mo-1 mo | 0.35 ± 0.57 | –0.61 ± 1.24 | 0.82 | |
| 3 mo-baseline | –0.91 ± 0.49 | –2.71 ± 1.28 | 0.36 | |
| WOMAC-stiffness | 1 mo-baseline | –1.26 ± 0.39 | –0.56 ± 0.33 | 0.11 |
| 3 mo-1 mo | –0.15 ± 0.48 | 0.11 ± 0.35 | 0.71 | |
| 3 mo-baseline | –1.41 ± 0.41 | –0.46 ± 0.45 | 0.14 | |
| WOMAC-physical function | 1 mo-baseline | –6.51 ± 3.18 | –7.31 ± 2.29 | 0.59 |
| 3 mo-1 mo | 2.01 ± 3.37 | –0.61 ± 4.19 | 0.32 | |
| 3 mo-baseline | –4.51 ± 3.09 | –7.9 ± 2.86 | 0.18 | |
| WOMAC-total | 1 mo-baseline | –9.11 ± 3.95 | –9.96 ± 3.21 | 0.81 |
| 3 mo-1 mo | 0.11 ± 4.62 | –1.26 ± 5.42 | 0.83 | |
| 3 mo-baseline | –9.01 ± 3.01 | –14.21 ± 3.87 | 0.81 |
Values are presented as mean ± standard deviation.
VAS: visual analogue scale, WOMAC: Western Ontario and McMaster’s Universities Osteoarthritis Index, US: ultrasound, GNB: genicular nerve block.