It's promoted as 90% successful....maybe so....but I just had it....and 2 weeks later I'm in the same position. They ask your pain level 1 week after where there is almost always a big improvement and I think they use those stats as the published results. But just 1 more week later I'm no different than I was at my worst. It might be right for others. Dr. Patel at North Shore Pain Mgt. Massachusetts, affiliated with Mass General is a reliable consult