Somebody tell me all you know about hock injections. Toby's were injected right before we bought him a year and a half ago, and I think they'll need it again before show season starts. He is not obviously lame, but when I pivot him to the left, he short steps on that left rear leg. Also, when I turn them out, he feels the need to take off at top speed and make a few laps running and bucking...isn't that normal for a 26 yr old horse? Then, he usually does a big sliding stop after which he takes a few lame steps on that left rear leg. Other than that, it's not noticeable. We've never done hocks before. We had Nick's front feet done a couple of times, but i'm just needing info on the hocks. My trusted lameness vet has moved so I'm getting someone I don't know...any tips as to what to ask for, what to look for, etc?