Slather it with LOTS of Vitamin E oil.
My BIL had his dirtbike fall on his leg. Broke the leg, fried his leg on the pipe, had an operation to fix, took AGES to heal, got infected, re-operated on, loooooooong heal time, more infection, skin grafts (from his A$$) then his Mom (retired nurse from burn unit) arrived to care for him. Used lots of VitaminE. Healed pretty good, but still scarred.
I think since then he has broken his other leg and one arm. I think he should hang up the keys.