I had the P-Stim put in last week. I am on my last day. I have 2 more times to have it put in again. So far, slight change in pain. My Dr. says she has 80-90% success rate - either pain gone or ppl have gone way down on pain meds. I have chronic pain in my cervical & thoracic spine. Lots of bad stuff in there! Hopefully this will help. Have to get back to tennis. The odd thing is, when I am more active it doesn't hurt as much.