7 years ago I had a tummy tuck and lipo (entry through both butt cheeks). Could it cause injury to sciatic nerve?

and every since then I have had severe lower left leg pain. I've been to every dr u can imagine and no one can figure out what to do. My neurosurgeon thought back surgery on l5-s1 would fix this because I did have a slightly blown disc. After surgery it is very obvious the pain was not going away. So the dr deemed my surgery unsuccessful. Where do I go from here? Dr suspects injury to sciatic nerve during lipo. He has no other options for me!!!! ANY IDEAS? IM DESPERATE! Please!!!!!