Boy, I really know what you are going through! The first days are the hardest, when it is almost too scary to see where the wound is going - good, bad, really bad -, and then you settle into a routine and do whatever you have to do to get the horse well.
My horse is recovering nicely from what is called a catastrophic leg injury (see Phoenix had an accident), infact we are going to go for our first little ride since her accident next week. It is amazing what horses can recover from, it looks like your little guy is doing well and I hope to goodness all tendons and ligaments heal properly and this is just a little hitch on the path of a happy horse life. Keep up the good work, wishing you all the best.