Update and a new question.
The update is more information. They did x-ray the opposite hock at the same time, when the horse was a yearling. It was clean. But man, there was a lot of shrapnel in the hock with the chips. Everyone (vets and trainer) considers these chips the product of OCD, though there could have been some trauma to that joint, given that just the one hock was involved.
My vet cautioned me about resale. What he meant was that despite a very clean-looking joint in the 5 year old, the effects of surgery (mainly taking out a lot of cartilage to get the bits of bone) would make anyone shy. And that might persist even if the mare stays sound and is doing a job, since the cartilage problem would show up as the horse ages.
I’ll pass on this idea to the vet who will do the PPE. His practice, but not he, did the surgery. We did speak some about those x-rays today (before I learned about these concerns from my vet). I didn’t tell him this was a horse I’d probably resell some day. But he didn’t seem afraid, either.
Bottom line: Would you/your vet buy a going horse like this…… problem found and solved as a yearling, but still with an OCD surgery in her past?
Oh, and my vet thinks that lesions in the stifle caused by OCD would have shown up by now if they were there. That and the problem limited to one hock makes him less worried that this horse is riddled with it. That opinion is worth what you paid for it. But he did think that OCD issues in different joints had a habit of showing up at distinct times in a young horse’s growth. So OCD in hocks happen at 1-2 years; stifle lesions show up a tad later. Just FYI if you like free ideas from the interwebz.
Is a horse with bone chips removed tainted forever?