In both sport horses and racehorses, fetlock osseous pathology is a relatively frequent cause of pain. While fetlock bone injury has long been recognised as a clinical problem in racehorses (including trotters), we are now increasingly recognising osseous pathology in the fetlock joint of more elite sport horses as a clinical problem. As greater demands are put on sport horses, the more similarity is seen between the osseous injuries detected in sport horses and racehorses. These greater demands include increased speed in endurance horses, increased extravagance of dressage horses and repetitive hyperextension in showjumping horses.
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