80
Participants
Start Date
July 5, 2018
Primary Completion Date
April 24, 2020
Study Completion Date
January 5, 2021
Pulsed Radiofrequency treatment
The pulse treatment generator (PMF-21-100-5, Baylis Medical Inc., Montreal, Canada) with a length of 10 cm, 21-gauge, and an active tip length of 5 mm is inserted vertically into the puncture point. The pulse treatment generator is set to the pulsed radiofrequency automatic mode, with a temperature of 42 °C, pulse frequency of 2 Hz, pulse width of 20 ms, and treatment duration of 360s.
Nerve Block treatment
A mixture of 40 mg Triamcinolone + 2 ml of 1% Bupivacaine + 2 ml of 2% mepivacaine + 1:100000 epinephrine is injected for nerve block treatment using a puncture needle.
Beijing Tiantan Hospital, Beijing
Beijing Sanbo Brain Hospital, Beijing
Jilin Province People's Hospital, Changchun
Beijing Sanbo Brain Hospital
OTHER
Jilin Province People's Hospital
UNKNOWN
Beijing Tiantan Hospital
OTHER