If it's any help I lost my L2 when my spine was compacted after a helicopter crash in the Army. The best pain killer is mental my friend, but it's a bit of a long road to get there. I went down the opioid route and after a while it was useless so they carried on doubling the dose, try and take as little as possible. I broke my ankle on both sides recently, they almost killed me with Ketamine as nothing would dull the pain on relocating the dislocated ankle.