You're a man of few words, but I'm afraid I need a few more words to clearly understand exactly what you're asking. In the meantime, here are a couple of links that may be helpful:
Information on wounds that won't heal: http://www.medicalmoment.org/_content/risks/apr07/1401204.asp
Info on nerve biopsies: http://www.nlm.nih.gov/medlineplus/ency/article/003928.htm
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