I had one implanted on Dec 21, 2018. When I awoke after surgery, I had abdominal nerve pain that was worse than any pain I've ever experienced. I ended up staying in the hospital for 8 days as they ran tests and tried different medications on me to try to stop the nerve pain. Even the hospital gown touching my lower abdomen set off a reaction of pain that is indescribable. On Feb, 25th 2019, they replaced the stimulator with another model thinking the first model was pushing on nerves setting off the pain. My spine Dr told me the stimulator people actually brought a larger battery to implant. He said they argued over it, but knew he had to insert into me as this was the only thing they had. He wasn't happy, actually he was pissed, when i spoke to him the next day. Because the unit was larger, it created more abdominal pain, and did not help the original nerve pain in my right foot and lower leg. So I shut off the unit and on May 1st, 2019, they removed the leads and the battery pack. I was told feeling so horrible. I had absolutely no strength, I would sleep 12 hours at a time, and they decided that my body was completely rejecting the unit. This was prior to them taking it out on May 1st, but was the final straw. My spine Dr told the stimulator people that he was going to take it out and they told him they thought he put the leads in the wrong place, but the stimulator people were in the operating room telling him where they wanted the leads to be placed. Anyway, I'm now 12 days post-removel surgery, and I still feel horrible. I still have no strength and all I want to do is sleep. I have my post-op appt tomorrow, but for now, I still have the abdominal pain which the pain is at a constant 8-10 (which was caused my the surgery and which I was told I may have to live with for the rest of my life), my right foot and lower leg still hurt and the pain is always at an 8-10 and I have limited strength which allows me to work maybe 3 hours per day. So before you have any spinal cord stimulator implant, always ask for case studies. I wish I would have done more research into this prior to the permanent implant, because I would have chosen NOT to have the implant done and worked with my spine Dr on another method of pain relief.