Various configurations of bar shoes can be used such as a straight-bar - which is always the authors' choice - egg-bar, heart-bar or Z-bar shoe. Initially, the author will often use aluminum glue-on shoes on many horses with quarter cracks. First, it allows the foot to be trimmed and shod to the most suitable foot conformation.
Second, gluing on the shoe allows for more expansion to be provided under the quarter and heel, thus increasing ground surface. A full-thickness quarter crack should be thought of as a fracture of the hoof wall and therefore an implant should be incorporated into the repair, rather than just placing a fiberglass patch over the defect. When a full-thickness quarter crack is present, it is the author's opinion that the repair should be delayed for a few days following the horse being trimmed and shod.
This is because the coronet will have been displaced proximally above the quarter crack and should be allowed to settle back into place and assume a more normal slope of the coronet before a repair is put in place Figures 3A, 3B. When infection is present, it is characterized by marked lameness; pain on palpation and a swollen discolored coronary band above the defect. Occasionally, exudate can be expressed when digital pressure is applied to the coronet.
If infection is present, veterinary input may be advantageous to the farrier. When starting the repair, the hoof wall should be thoroughly clean and dry. The quarter crack is opened its entire length using a Dremel tool b with a tungsten carbide bit, with care taken especially near the coronary band not to create any unnecessary hemorrhage.
The created trough should be of sufficient depth to accommodate communicating drill holes. All necrotic and loose horn should be removed.
The hoof surface on either side of the defect should be sanded using the Dremel tool with a coarse grit drum sander. One wire unit is passed through the holes from palmar to dorsal direction and another wire unit is passed through the opposing holes in a dorsal to palmar direction into the depth of the trough. The ends of all the wires are pulled tight and bent outward. The tab placed on the wire unit will now lie against the outer hoof wall. This prevents the wires from cutting into the hoof wall.
Additional sets of these wire units can be used according to the length of the defect or until the desired stabilization is achieved. A full-thickness quarter crack leads into the dermis and cannot be completely eliminated, thus necessitating the need for a drain. To place a drain, a small amount of medicated putty c is rolled into a tubular shape and placed within the debrided trough. The ends of all the opposing wires are now joined together and twisted until resistance is felt Figure 5A, 5B.
The excess wire in front of the twist is cut off within the defect. Quarter Crack Repair Photos. Sponsorship Form Job Opportunities. What are Quarter Cracks? Improperly Balanced Shoeing or Trimming Feet that are not properly balanced cause an uneven foot fall pattern, adding excessive stress to portions of the hoof wall.
Over time, this uneven distribution of weight results in abnormal forces as the foot makes contact with the ground, which contributes to quarter cracks Repairing Quarter Cracks The cause of quarter cracks must be determined before repairing the crack successfully. Contact Us Stable Ln. Veterinarians Dr. Burny Baxter Dr. For a successful quarter crack repair, it is necessary to determine the underlying cause of the crack and to correct it with appropriate shoeing.
After the cause is addressed, the defect should be stabilized. Providing stability and strength to the hoof wall defect allows the horse to perform without pain while the quarter crack heals. A full thickness hoof wall crack can be thought of as a fracture. Shoeing Strategies Because various hoof imbalances can lead to quarter cracks, veterinarians and farriers must address each case individually, Muir said.
Crack Repair Veterinarians and farriers also have more choices of materials with which to repair cracks, Muir said. Take-Home Message Quarter cracks are serious and can cause long-term internal damage in addition to acute lameness. About The Author. Michelle N. Related Posts. Dead space. Search Search for:. Weekly Poll:.
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