I had great success with the trial but the perm implant has been a disaster. My wish was to have a better life after 30 years of severe nerve damage and four lumbar surgeries but it was the biggest mistake of my life. After reviewing the FDA site and other comments I recommend staying away from it. There are just to many problems and horror stories from placement surgery to problems years later. No matter how bad it is today we have to ask ourselves COULD IT BE WORSE? Chances are the answer is yes. Sorry for sounding bitter. I also have PTSD because I felt the doctor cut me open to remove the device. I can’t get past it.