How does a horse break its PELVIS during the course of normal riding? My gosh what a horrific bone to break, how painful for the poor horse.
It's actually a fairly common injury and can happen from a sudden stop, a fall, smacking a tree, getting cast in a stall, etc.
My horse fractured his pelvis as a yearling, we still aren't sure what happened, best guess is he fell while playing in the field but since no one saw it happen... who knows? It's also a very hard diagnosis to make, it took us a few months to get the diagnosis and I had to haul him to a racetrack vet. It kept looking like a stifle injury.
My horse is on adequan and is on smartflex supplements but I really don't have any issues with his pelvis. He does have off and on lameness issues but that is in the front end and is a completely different issue that has been diagnosed and is being treated.
You can definitely show a horse that has come back with that type of injury with vet approval but obviously you have to be respectful of it, as in get off him between classes, warm up slower than you would a normal horse, pay attention to his comfort levels etc.
My horse loves a visit from the chiro and yours probably would to...
"Be a best friend, tell the truth, and overuse I love you
Go to work, do your best, don't outsmart your common sense
Never let your prayin knees get lazy
And love like crazy"