When to worry about a hoof crack

Here's a rundown of common hoof defects, ranked from least troubling to most serious.
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Any defect in a hoof wall is cause for concern. The action required, however, depends on the nature of the crack. Here is a list of hoof crack descriptions ranked---generally speaking---from least to most worrisome:

• Small, vertical cracks that start at ground level and extend upward an inch or less. These will typically be resolved with the next farrier visit and require no further action.

Badly cracked horse hooves

Long, persistent vertical cracks. Cracks that extend more than an inch up the hoof and never seem to grow out and go away can be sign of a chronically unbalanced hoof.

• Horizontal cracks an inch or less wide that originate at the coronary band and grow downward as the hoof does. Cracks like this are typically associated with a minor, healed trauma to the coronary band that briefly interrupted hoof production. As the hoof grows out, the crack migrates downward to eventually grow out entirely. Chances are no intervention will be needed during this process.

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• Vertical cracks at the bottom of the hoof that continue around the bottom of the foot to affect the sole. You’ll need to pick up the hoof and perhaps clean it a bit to look for this. If the crack appears to involve any structures other than the hoof wall, it could become a more significant issue. Mention this to your farrier and veterinarian and keep a close watch out for signs that it may be more than just a superficial defect.

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For your bookshelf:
Making Natural Hoof Care Work for You: A Hands-On Manual for Natural Hoof Care All Breeds of Horses and All Equestrian Disciplines for Horse Owners, Farriers, and Veterinarians

• Long, persistent vertical cracks. Cracks that extend more than an inch up the hoof and never seem to grow out and go away can be sign of a chronically unbalanced hoof. Even if the crack is thin and stable, work with your farrier to identify the cause and determine if a new approach to trimming and shoeing might be needed.

• Cracks that spread wider with each step, bleed or are associated with lameness. A crack with any of these characteristics is cause for an immediate call to your veterinarian and farrier. A combined effort from those two professionals can typically resolve most problems, but the longer it waits, the more damage will be done.

This article first appeared in EQUUS issue #464, May 2016. 

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