Over the past month my horse has been walking, trotting, cantering, and standing crooked. No matter which direction we are going his hind end is always angled to the right. When he walks his right hind leg sort of slides and turns inwards. He's had schooling lessons and from them my trainer has determined that he is stiff on his right hind. My trainer decided to put him on Adaquan, which he's now been on for almost 2 weeks, and I haven't really noticed much of a difference. Another boarder also pointed out to me that he constantly holds his tail to the right. The way he moves is definitely obvious because several people have noticed or asked me what was wrong with him. I know what his gait feels like and it's definitely off. He also dropped weight a couple weeks ago, so we upped his feed. He's gaining weight in his barrel but his hips are still poking out.
My trainer wants me to continue exercising and lessoning with him as normal. He says he sees this all the time in horses around his age and that it is his bones fusing.
He just turned 14 years old and is a Thoroughbred gelding. His discipline his hunter/jumper but he is an OTTB.
I'm not sure if this is relevant or not but my horse had a puncture wound above the knee joint on his left front in February. Then at the beginning of March he had an abscess on one of his hind heels.
Does anyone have any idea of what this could be? Does bone fusing sound about right? My trainer was a pro and is kind of a no nonsense type of person.