“…8 They reported superiority of the use of CFR in the rate of pain reduction more significant than 50% at the assessment after 6 months (CFR 71% vs HA 38%; P < .001), in the WOMAC score at 6 months (48.2 CFR vs 22.6% AH; P < .001), and in the improvement to the perception of global improvement score at 6 months (72 CFR vs 40% HA; P < .01). 8 In 2020, Arıcan et al 9 published a study analyzing 20 patients with knee OA equal to or greater than KellgreneLawrence II submitted to pulsed RF. All analyzed patients were previously submitted to a test block with anesthetic of the genicular nerves, being included in the study only if the pain improved by at least 50% after the test block.…”