Hock rotation

Hello Soday, is this a new finding or has your horse always been this way? I have seen gaited horses that have a bit of apparent rotation in the hind leg particularly if the conformation is a little base wide or narrow. As to the occasional collapse behind I don’t know of any horse that does not have the rare to occasional hind limb stumble. Before you go down a long road of expensive shoeing options have a veterinarian or experienced horseman you have a lot of respect for examine the horse moving under saddle and from there discuss options with you. One thing that would concern me from a shoeing standpoint is if the foot is also rotating while placed on the ground as the horse moves over it. Try watching on a firm but somewhat loose ground where you can see the whole foot. Something that helps in these situations is videoing the event so it can be reviewed in slow motion.
DrO