A hoof crack’s ability to lay your horse up depends on several things including what caused it, its location on the hoof, and its depth—deep cracks can expose the sensitive laminae under the hoof wall, and cause infection and significant pain. Rough or hard footing, an impact, a coronary band injury, illness, flawed conformation, hoof imbalance, poor shoeing, and even inadequate nutrition can all play a role in a hoof crack.
Location
Hoof wall cracks may appear at the hoof’s toe, heel, or along the sides, areas known as the quarters. Cracks may start at the hoof’s bottom edge and work their way up or start at the coronet and work their way down. The underside of the hoof—the sole and bars—can also sustain cracks, usually due to an impact.…