I was referred to a Pain Clinic
http://www.michiganpain.com/The injections do not enter the Spinal fluid ..but rather outside the spinal sac and consist of steroids and pain meds. I got 80% mobility back and at first they last about 2 1/2 mos once we got up to the right amount of med/steroids and in the right area in my lower back. This reduced the pain that radiated into the back of my legs, hips and up in the lower back area. Once the injections began to not work so well we decided to do this..we knew it could work because the injections did just not lasting as long as we would like. I can tell you I am 2 days out and the sharp, stabbing..ache I had in my lower back and legs is gone. I just have some muscle soreness but nothing like he thought I might have. I am stunned!
I did try physical therapy and it made my pain worse..except the heat therapy. The Rhizotomy he does go into the nerves that feed the pain to the brain and he actually burned the tips of those nerves. They do regenerate in 6 mos to a year so its not permanent but it does beat taking tons of pain meds and getting constant steroids pumped into me throughout the year. Poke around the link I gave to give you an idea of what they do..and hopefully it will give you more information to take back to you.
By the time I went to the Pain Clinic I had already done the pain pills (high instance of side effects for me and allergies)..and the physical therapy. My first visit with him I went home with relief via injections..he wasted no time and really listened to me. I had a Dr. before him that told me that my arthritis couldn't cause me that much pain..I nvr saw that Dr. again. The last thing we need is to be made to feel like hypochondriacs when we are the ones living with the pain.