Some additional exciting news: My dad has been working on strengthening his leg and ankle, and today he made the change from his big plastic knee-high brace (that he got when he was in the hospital) to a
little black ankle brace. It's worn by volleyball players to prevent ankle sprains. This is a HUGE difference, because the large brace restricted the use of many muscles, and now since they've been getting stronger, he is able to wear the smaller one which only restricts his ankle. He's not quite used to it and is still figuring out how much he is able to do with it but he wears it in the house and on flat surfaces now. Another plus is now my dad can wear some of his old shoes again. :)