you might try two things. the first is topical application of Colloidal Silver . it may not sound like it would do much, but i have used it and found it to be very powerful. the silver is an electrical conductor and helps the nerves fires properly.
the second is to get a bob beck magnetic pulser. it pulses a magnetic wave into your body at specific intervals. it relieves pain and increases cellular activity while accelerating healing.
those are two things that have worked for me. bone broth is another great idea.