Forty-one patients with chronic lumbosacral radicular pain were randomized to receive high-voltage PRF treatment at 60 V (n=20) or low-voltage PRF treatment at 45 V (n=21). Outcomes of interest were the numeric rating scale (NRS) for pain, Oswestry Disability Index (ODI) scores, and the safety and complication rates of the treatments. Outcomes were assessed before the intervention and at the first...