The study will take place in the Chaim Sheba TelHashomer Medical Center, Ramat Gan, Israel. Participants will be recruited from the hospital's Pain Management outpatient clinic from the patients eligible for the procedure involving pulsed radiofrequency of the lumbosacral dorsal root ganglion. After receiving the hospital's Helsinki approval, the P.I. and/or other designated staff in the department will approach relevant patients (in line with the mentioned inclusion and exclusion criteria), describe the procedure, inform of the possible adverse events and collect informed consent if the patients are interested in participating. Consent will be obtained from the patient during the patient's visit when the option of RF is agreed upon and scheduled for the future.