Horse looks Over At Knee only after a long day of showing?

Thanks for all your answers, I guess I should have specified "as a 2nd horse / light riding horse". This isn't my show horse, more of a guest horse / still want to ride and my horse is tired, horse.

At any rate, I declined on the horse, even though the price was very low.

I can't believe that the horses knees look off but it still trots sound? Have a very experienced vet of your own look at this horse prior to purchase. A horse with a known knee injury is at extremely high risk to develop arthritis in that injured joint. Due to the age of the horse likely it's just a matter of a year or three before that happens if it hasn't already.

That said, if the horse is sound the horse is sound. I just question if that truly is the case or if the eyes looking at the horse are not picking up a subtle problem.

PS Our endurance vets check hundreds of horses each weekend for soundness and have a very developed eagle eye for fine lameness detection. You might see if you can find a vet with that kind or level of experience.

Run don't walk. . don't buy a horse that is on old arthritic horse medication its OLD.

It's potential is to get worse and become an unsaleable medical patient, pasture potato.

Buy a horse that is under 12 and in good health. Even if you pay more. It will be cheaper to own, and possible to resell.

Off the track horses are plagued with old horse issues before their time, because they are used so HARD before they are done growing. Sad but true.

That horse likely has an old chip in its knee (carpals)

I would NEVER buy a horse who starts out in excellent shape and by the end of the day has a noticeable issue such as this. You must be rather inexperienced or you wouldn't even consider the idea.