I used to get Cuna (late teens, hard-used OTTB gelding with a weak hind end) injected every 6 months and it did WONDERS for him. Seriously. He went from basically unable to use his back end to swinging and free and happy. Once I put it off a couple months because he needed $$$ joint help, but I felt like a pretty terrible human when we finally did make it in and his hocks were inflamed and uncomfortable.
I know Courage got plenty of injectable help on the track and I'm in no way opposed to that. It just means that I now own an 11 year old high mileage thoroughbred and especially in the cold winter weather, I'm starting to wonder if he'd benefit from some inter-articular relief.
So help me out. What sways you for for against injecting a horse's joint at any given time? Have you done it? Would you do it again?