I have had a long history of multilevel degenerative disc disease. After 13 years of injections and pain management, I decided to have Stem Cells taken from my bone marrow and injected into L4 L5,L5 S1. 2 levels. This was done in March of 2013. I improved for about a year but back pain returned with a vengeance. Was worse than ever.
After Rhizotomies and more blocks I was not able to function. I finally underwent a 2 level spinal fusion Nov. 2015 and Neuro Surgeon stated he had never seen anything like it. The stem cells that were injected had calcified and were growing bone in disc space pushing out on spinal cord. I was aware that the stem cells could take on characteristics of disc material OR bone. Mine formed BONE and was fusing itself. Not in a good way. I am 3 months Post op spinal fusion with pedical screws and rods and disc spacers. Slow healing but I know I have made the right decision for me. Read ALL you can about Stem Cell Therapy and realize the risk involved. When you are hurting, you will take risk. I am not upset with  that took care of me because they explained clearly that They didn't KNOW what might happen. It was experimental and I TOOK THE RISK. Every patient is different as well as out comes.
I worked as a surgical nurse for 24 years and hurt my back lifting patients and trays of instruments. I was very aware of my options and take this one day at a time. Back issues are never cured, JUST MANAGED