I would like to point out, that erythromelalgia, is a possibility for your foot.

http://emedicine.medscape.com/article/200071-overview

This condition is often not diagnosed accurately by doctors today.

Also as far as nerve damage or Peripheral Neuropathy goes, there are over 100 causes of PN. In your case trauma appears to be likely.

To heal from damage to nerves you need certain nutrients.
Vit D
B12
folate
B6
Omega-3 fatty acids (flax oil and fish oil).
magnesium

If your diet is lacking these nutrients healing will be poor, or slow. The feet are well known to be slow in healing anyway since circulation to them is poor.

Tight shoes, tight lacing habits, or wearing boots, that constrain the feet alot, are not good for circulation that the feet need.

RSD is only one outcome from a foot injury. And this is statistically not nearly as common as Peripheral Neuropathy.