A friend (C6-7 quad) said that his podiatrist suggested Amerigel for a persistent pressure sore on his foot and that it worked well. I don't know how well it would work on other areas but it might be worth a try. It is available from the manufacturer, Amazon, and ebay as well as many retail outlets.

http://www.amerigel.com

http://www.amazon.com/Amerigel-Wound-Dre...2273&sr=8-2