Well, it's only been 24 hours, since my rhizotomy on both facet joints at L4-L5. I have not needed the ice pack that was sent home w/ me from the hospital. I CERTAINLY felt the zapping, during the procedure, and there are seven needle holes. But, other than that, there is almost NO PAIN! This morning, I could feel a slight pain from one injection, and now that is gone. I am a little weak today, running out of breath easily. But, I'm sure that is due to the shock to my body. I'm glad I didn't read too many details about this procedure PRIOR to having it, cuz I have read some comments that the procedure did not work. That might have scared me from having it. I'm actually confused...when was the pain from the injections supposed to start? Why didn't I need the ice pack? Will this REALLY work for the next 1 - 2 years? So far, so good! If you want a pain doctor that was recommended by my sister (who is a chiropractor), Here you go: Dr. Uday Doctor (713) 790-1500. I wouldn't go to just any doctor, and he doesn't have a clue that I have placed his name here - just trying to do others a favor!