Nevro counts me among its 90% success rate. The simulator NEVER worked for me. (The external test before it was implanted went great; the implanted device was certainly not worth it. My handwritten notes from the time don't match what they tell me I said.). I was willing to accept this; this was a risk explained before I had it implanted. However, Nevro hounded me for months to try to get it to work beyond the point at which it was not functioning for me. It took ages to get them to go away. I then ceased using the device. Now YEARS later, I cannot get an MRI because Nevro's device is interfering, even though it's in a totally different section of my body. They say they could install a program on the device to prevent this from ever happening again, but the device is not responding because it's my fault for not continuing to use the device for all the years in which it didn't work. Nevro is composed of sharks, they withhold information, and knowing what I know now, I would never have let them near my body. I am trying to schedule what they can an "extraction" -- having a surgery to remove the device. It's going to keep me from having an MRI for 3 months minimum on an area of my body that is newly injured. Don't believe the statistics; they're not a research group. They are a for-profit organization who will be in your life more than you ever wanted and can cause more harm than good.