A Prospective Crossover Comparison Study of the Single-Needle and Multiple-Needle Techniques for Facet-Joint Medial Branch Block

Our results indicate that the single-needle technique takes less time to perform and causes less patient discomfort than does the standard technique but provides the same degree of accuracy. More studies with larger sample sizes are needed to corroborate these results and explore the effect the single-needle approach has on the rate of false-positive medial branch blocks.