Equine hindlimb lameness of coxofemoral origin can occur secondary to fracture, osteoarthritis, luxation, and subluxation. Cases of subluxation are rare, and only two have been reported. One case report of coxofemoral subluxation in a Welsh Pony was published in 1967. Long-term follow-up is not available, because the pony was euthanized immediately after radiogaphic diagnosis. In the second study, arthroscopy revealed extensive tearing of the ligament of the head of the femur to be the cause of bilateral subluxation in an American Miniature horse. In contrast, multiple reports of coxofemoral luxation have been published. Although a few successful treatments for coxofemoral luxation have been described in small-breed horses, prognosis is generally poor with persistent severe lameness as a sequella. Subluxation has been reported as a post-reduction complication for coxofemoral luxation.
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