All plastic surgeons said nothing can be done to bring back the skin. Any possibility of his skin by any means to cover the pink area of leg?
Well, for burns treatment, tiliapa fish skin is used, but I am not sure if it can be used for your case. I'm still a student, so you can ask your doc regarding tiliapa fish skin...
They're are standardized treatments yet, they are experimental treatments , I think they were initiated in Brazil. I read about them from net