So far, sheared heels sounds pretty minor on the hoof-health scale. But in truth, it's not that simple. Although many experts agree that improper trimming can lead to sheared heels, they hold differing views on other contributory factors and advocate different approaches to treatment. In this article, we'll outline the theories of the causes of sheared heels, we'll tell you which horses appear most susceptible to the condition, and we'll explain the various therapeutic options. Most important, we'll give you tips on how to prevent your horse from developing sheared heels in the first place.
Sheared heels can occur in hind feet as well as in forefeet.
In Sigafoos' experience, sheared heels often occur in conjunction with other hoof conditions, such as heel and quarter cracks and contracted heels. O'Grady, Turner, and Sigafoos agree that improper hoof balance can predispose a horse to developing sheared heels, but there appears to be some disagreement as to the origins of the imbalance. O'Grady begins by presenting the conventional wisdom, then disproving it. Excess hoof wall is removed from one heel, creating an imbalance. Because the heels are a different length and height, a disproportionate force is placed on the longer heel during weight-bearing.