Hello, I would need more symptom description to validate the possibility that your sciatic nerve was likely injected with anesthetic material, however, the point is that you are experiencing chronic pain. There are a variety of approaches to your pain but mostly they involve looking for medications or cocktails of different medications. There are devices such as a VAGAL NERVE STIMULATOR and then, are surgical procedures such as RHIZOTOMIES though I truly am not a fan of the latter procedure due to long term bad outcomes that often come about in many patients where pain comes back even worse than before. I believe your best option is to work with your pain management specialist looking for the optimal combo of drugs to treat your problem in addtion with things such as AQUATHERAPY and WATER JOGGING. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Dariush Saghafi, Neurologist