<s>[INST] My L3,4, and 5 appears to be fused together naturally. There are signs of bone spurs and the discs are not visible in the x-y. I have a some arthritis in my the lower back. There are several stem cell procedures and all claim their procedure is most effective. How do I select the right one procedure? [/INST] Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Stem cell therapy for spine arthritis are still under research and are not yet approved for human use. You can go for surgical procedures which shows good results in arthritis of back. Consult an orthopedician or a spine surgeon and get evaluated. Wishing you good health. Thanks. </s>