I had the Abbott trial done in November and it worked. So in December I had the permanent implant and it is not working. My back pain is almost gone except for the shooting pains I regularly have at the site of the implant (generator) and my legs and feet hurt even move than before. The rep for Abbott has had me change the setting several times with no improvement. I see the doctor again next month and hope I can get some kind of help. I don't know if the Abbott implant is the problem or if something went wrong with the surgery but I hope they can find a satisfactory solution because I am really tired of all the pain.