Hi John -
I just got back in town and have read of your tragedy. I was married to a guy who rode dirt-bikes competitively and "road-rash" was a way of life with us. What the docs had us do was to put Betadine on it daily instead of ointment. Betadine is the red stuff they use to clean your skin before and after surgery and it forms a thin protective film over your wound, but lets keeps it dry which they said was better. We were told not to use hydrogen peroxide because it impedes healing.
My two cents worth. Feel better.