I think you mean ablating the nerves, which means removing them, by means of burning with electricity, chemically, etc. This is not possible with SFPN, as the problem involves vast numbers of small nerves, and anyway, even if possible, would probably be counteractive. Large nerves can be ablated, but do you really want to cut off sensation to your whole foot?
BTW, I find that my recently developed metatarsalgia (pain in the ball of my right foot due to degeneration of the joint, which is an orthopedic problem separate from the SFPN) is making the neuropathy worse in that foot. My podiatrist advises me to wear orthotics, but I can't wear shoes for very long because of the neuropathy. I ususally wear flip flops or go barefoot, which is bad for the metatarsalgia. Lots of fun!
I find that almost anything can effect PN, which makes it very hard to know what to do to make it better.