Abstract: Objective To observe the safety and efficacy of high-voltage long-term pulsed radiofrequency therapy on cervical 2 dorsal root ganglia in the treatment of cervicogenic headache patients. Methods  Forty patients with cervicogenic headache who were admitted from July 2020 to December 2021 were enrolled.Ultrasound combined with CT positioning was performed on the dorsal puncture of the ipsilateral atlantoaxial joint to give high-voltage long-term radiofrequency treatment,and the visual simulation scores,clinical efficacy and complications preoperation,1,4,and 12 weeks after surgery were recorded.Results The visual analog scores of the patients at 1, 4 and 12 weeks after surgery were 2.7±1.0, 2.7±1.0 and 2.2±0.8, respectively, which were significantly lower than those before surgery and the difference was statistically significant(P<0.05).The effective rate was still up to 92.5% at 12 weeks postoperation,and there were no serious complications during the treatment.Conclusion The short term efficacy of high-voltage long-term pulsed radiofrequency in the cervical dorsal root ganglion in patients with cervicogenic headache is good,without serious complications.

Key words: cervicogenic headache, pulsed radiofrequency, high-voltage long-duration, dorsal root ganglion, chronic pain