After having chronic burning for over a year (it is never gone except when I sleep and who knows since I'm asleep? ) and having all types of tests to see if the cause is structural or other I have decided to go forward with this. My MRi's and flexion extension xray show that the area of L-4 L-5 S1 has issues that could be causing my symptoms. I am hoping that this may give me more data (and some relief) so that I will have a better idea how to proceed.

Thank you for your responses and concern. I will let you know how it goes and post the effects of this procedure. I am a little nervous, but the doctor who is doing the procedure is one of the few I trust.