If it helps at all, a friend of mine had a young filly with this and she pulled through, it was a long old haul but she grew into a strapping young mare.
Sending you best wishes and I really hope your boy pulls through this. Hugs to you, you must be so upset but you know sometimes these horses can beat the odds and survive things we'd never credit them for. I'm hoping this is the case for Goliath xx
Goliath is still much the same. He has 3 of his legs now swollen to 2-3 times the normal size and one is all around the knee joint. I can see he just feels s**t :-(