Its a a little bit academic written paper but with Wikipedia you can go a long way


In this paper we review the literature in which stem cells of different origin and species were used to treat neuropathic pain induced in experimental animal models. We divide the published papers according to the type of stem cell used, independently of the experimental NP model. We do not report the studies with embryonic stem cells considering the associated ethical problem and the major risk of tumors correlated to them. Moreover, we considered only papers in which the effect of stem cells on pain behaviour has been specifically evaluated. Today there are three main types of stem cells used for neuropathic pain: neural stem cells, mesenchymal stem cells, and bone marrow mononuclear cells.

http://www.hindawi.com/journals/bmri/2014/470983/

Especially this part is very interesting
3.2. Adipose Tissue Derived MSC (ASC)

Interesting article. mine were adipose stem cells. I didn't have pain, so I can't measure any progress by that. I do however have a reduction in numbness and the heaviness feeling in my feet since the stem cell procedure.
I wonder if people get one or the other----some get pain and some get numbness. In that case, possibly I would have had a reduction in pain instead of a reduction in numbness?
What I'm REALLY hoping for in as increase in strength. I hope there is healing going on and I just don't know it yet. I'm thinking even if the motor nerve IS possibly healing, it won't be apparent until it reaches a targeted muscle. At that 1mm per day rate it could be a lifetime--I am 5'9" --pretty tall, so it's a long peroneal nerve.