Thank you again,
Well Angela, this is a little unusual. First, dislocation of the patella in horses is unusual -- very unusual. The far more usual situation is momentary upward fixation of the patella - especially in quarter horses -- a kind of subluxation. In this condition (which vets that don't work on QH's very often would not see) the patella is "stuck" out of place either momentarily or for quite a while. However, with upward fixation, there is always an abnormal gait. A "hitch" in his getalong so to speak. The leg "catches" and pops or perhaps just short steps on the affected side. It can be subtle sometimes so it takes a practiced eye to see it.
I would expect a complete luxation of the patella to result in serious gait issues. The patella would be rubbing on the lateral trochlear ridge and that would not feel good. The fact that he has no abnormal gait causes me to question the diagnosis.
My suggestion would be to seek a referral to an equine surgical center for a second opinion. I would venture to say that no equine surgeon is going to want to operate on a patient that has no pain or gait issues (because the patient sure could have one following surgery) -- BUT a surgical center would be equipped with the people and technology to make a definite diagnosis.
I suspect this is a form of upward fixation -- not luxation, but since I cannot examine your gelding over the internet I cannot say for sure. You need a good exam done by an experienced qualified equine surgeon.
Best of luck to you!
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