What the vet said is that the horse has "pretty bad" ring bone in the P3 and P2 bones in her foot. Her foot is slightly twisted and grows "wrong" from an injury as a yearling or foal. She's 5 now and has been lame at the trot since last April. She's fine walking on pasture and in the sand arena, but gimps a bit on gravel.
Her owner is fine with her being a pasture pet and a walk-only horse for little rides around the place. She's toying with the idea of breeding her (though I'm trying to discourage that...).
So, what can we do? The vet said joint injections aren't helpful in his experience. She's on MSM now and I'll put her on ActiFlex tomorrow. She's currently barefoot. What options should we consider for shoes, pads, etc. to help her be more comfortable and her foot more "stable"? Or should we leave her barefoot and trim more often? (she's on a 5-6 week shedule now) Any other supplements she should get? Pain management supplments?
She eats a grain-free diet currently with grass hay. For "feed" she gets a little alfalfa pellets, flax, and vitamins.