My first RFAs in 2000- 2002 last 15 years. Then I went back every couple years, and then I needed lumbar surgery. Heat not Pulse works for me. I had to fight for my stable use of percocet. I have pain in my sacral bones and tailbone that won't go away. The secret words ARE: "relieve my suffering." That is their job. They have to deal with "suffering." Make sure you have the best team of surgeons, pain mgt., and doctors. You have to kiss a lot of frogs. I had FOUR opinions over 20 years. I finally got into a great space. Don't give up. The medical "system" is a mess. Find good doctors. They are there!