I have a friend with a 9 year old child that just lacerted both his bicep muscles by the shoulder last week. He accidentally fell through a window and the top of his arm. He still has circulatory and nerve function to his fingers and such. They did surgery to close the wound but are giving not a lot of hope for regrowth? I guess scar tissue will form. I think the muscle has retracted some already. But the mother is not getting a lot of reassurance or direction about how to treat it, how to position arm, etc for the best possible outcome. Any ideas?