Am taking those medications as well for neuropathy with limited success. Spinal blocks and topical creams not at all. There are two types of therapy that are not as readily available but you might want to look into them. One uses ketamine--can be administered as troches (lozenges) or delivered intravenously. The other is called scrambler (or Calmar) therapy. It is an electric pulse treatment much more focused than using a tens unit. It is being used in Italy and there is a doctor in Rhode Island who has brought it to the U.S. I know what a struggle it is when medications don't work--be strong. If the surgeon is the doctor that is trying to treat nerve pain and damage you need to go to a neurologist and/or a pain management specialist. Surgeons sometimes think that they have the answers. They don't.