Corrective trimming is a commonly used measure to counter conformity issues in horses. We can lay down some basic standards here, however, the ideal fit for your equine can only be suggested by a professional vet who checks it up. Cow-hocked foals are splay footed and, hence, the inside of their hooves have to be trimmed in order for the inside heel to land on the ground while the toe points straight. Hence, trim two-thirds of the outer hooves of a cow-hocked horse.