I don't even know what to think anymore. He trots out sound (from what I can tell) in the arena, does good while on lunge. Half the time he is good on hard ground, half he isn't. Sometimes when he is doing a sharp turn he gimps out of it. I thought it might be from his sidebone issue so I had the farrier roll the toes so he breaks over faster, and gave him an off period in which I would require 2 sound weeks before I would start very light riding. Well after his shoeing he got better and better and after two sound weeks I started taking him in calm walks around the arena, then a week later when he was still sound a little bit of trotting, then he started to seem 'off' I thought he was stiff and tripping, but it ends up his knee was randomly giving out per my sister watching. So once again I have been not riding, but then when I tried to show a vet when she was checking out another horse she didn't see anything major other than very very slight gimpyness (didn't have time to get her hands on him though, just watched me trot him) So in order to try and show her I've been video taping him lunging and did a short 20 minute session in the saddle. (Which he didn't have his knee give out though) But here is the video from that ride anyone see anything? The only thing I see is stiffness in his hind end. He was stocked up in his back legs and had been on stall rest for a while.
At 0:02 and 0:10 his knee doesn't lock fully, if anyone else can see that. Any thoughts? I have some people say they see nothing and that he looks fine, just moving like an older horse...but I'm trusting my gut which says he's off and waiting for the vet.