I've had a Nevro and a Boston Scientific spinal stimulator implanted for chronic lumbar back pain. Neither one helped with my pain, and actually made my back pain worse. It felt like my spine was irritated and weighted down by the stimulator. After a dozen or so attempts reprograming the stimulator, I demanded the stimulator be removed. I had the stimulator for a year before my insurance came through. I felt much better after having it removed. Never again.