Quite often no exact cause can be found for PN. Since you mention the past injury , it could be scar tissue or perhaps it you used crutches & limped back then? the spine might have gotten tweaked out of alignment and now is causing troubles..
I would try to verify that there are no pinched or impinged nerves , that could be part of the problem..[/QUOTE]

My injury involved a broken right femur and hip at 21 years old in a car accident. I had a plate in my leg with 14 screws in it. It was all taken out after a year when the bone has mended. I was very lucky. I never, ever, had the slightest limp until a few years ago.
I take the B12, methyl plus I just started taking Potassium and Magnessium pills as recommended by Mrs D. So, we will so how that works.
Gene