I really can't say that I know anything about what's going on with your pain. But there are a couple of supplements that could possibly be helpful. Nattokinase is capable of dissolving fibrin - a major component of scar tissue. The product I use, which contains nattokinase is called Neprinol. It is pretty expensive but I think worth trying. The other supplement is Magnesium Taurate by Cardiovascular Research. It is one of the best forms of magnesium to ingest. It is relatively inexpensive. Muscles require calcium to contract; muscles require magnesium to relax. Magnesium is also important for nerve health.

I agree that painfree has given you some very good information. Even if the primary injury to your nerves is occuring near your spine, anything you can do to keep from stressing it further, anywhere along its length (eg. trigger point therapy to release peroneal nerve entrapment, if that's part of what's going on) will improve its overall health and likely help lessen your pain.