Something that might help lots of people who have impaired sensation in the feet is get hold of a telescopic retangle swivelling mirror. These are not very expensive. I bought my friend one using eBay from a seller dealing in tools.
By using the mirror my friend was able to spot any cuts etc on the soles of the foot and get treatment for the problems.
Pure bee keeper honey is marvelous for its healing properties. Will often come to the rescue when antibiotics fail.