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Quarter Crack in the horse's hoof
Quarter crack: It can be a mild superficial sand crack, or a deep fissure that goes through the
hoof wall into the sensitive laminae below. Bleeding, infection and lameness are all
possible consequences.
Early recognition and correct treatment
can save a lot of future trouble.
What should you look for? What can you do to help prevent it? How can you
treat it? Can you repair it? In the next pages: detailed close-up photos and images,
farrier analysis, orthopaedic shoeing, natural balancing.
What is a Quarter Crack?

The quarters of the hoof include the areas
between the heels and the front curve of the toe. The hoof wall tends to be thinner
and weaker at the quarters, and thicker and stronger in the toe area.
A quarter-crack is a crack that appears in the wall of the hoof, in the area known
as the quarter. It can:
- start at the base of the hoof and move up
- manifest in the hoof wall
- originate in the coronary band
The cracks can be vertical - going straight into the hoof wall;
or irregular - including:
- a double quartercrack - two cracks running side by side;
- a quarter crack that penetrates the hoof wall at an angle
What can cause it?
A hoof can be predisposed to quarter cracks because of its inherent composition and morphology:
- Thin hoof walls
- Contracted feet
External factors can also contribute to the development:
- Dry hooves and brittle hoof walls tend to split more easily than feet that are moist.
- A hoof that is overlong, unbalanced, or displaying 'flares' puts extra pressure on
hoof walls.
- An injury to hoof or coronet can result in a 'weak spot'.
Quarter crack or Sand crack: Which is it?
Sand crack is a wider term, used to describe any vertical
crack in the horse's hoof. This crack can be a toe crack,
a quarter crack, or a heel crack.
Quarter cracks are the most common. (In everyday conversation, a heel crack is sometimes incorporated under the more
general 'quarter crack'.)
Photo record of
quarter crack work continues. To access
the next pages, click on the links below. See our farrier pages
on White line
disease, and
Principles of
Horseshoeing. Full Site Index - menu bar.
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