I had a fusion at L5S1 in 1994 which gave me some relief in the lumbar area but unfortunately my relief only lasted about 10 years. I know that it sounds like any relief should be a bonus and believe it was at the time. Over a period of time it failed completely. My neurosurgeon said that no one would operate on my lower back again as there is too much hardware and no space to work around it. I saw a neurosurgeon for another opinion and he said the most relief that I could hope to get with the Stimwave was 20%. Since it also involved the fact that I needed to be able to lay flat on the XRay table for up to 45 minutes but my legs went into spasm so that was the end of our discussions.