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For a front leg, this is when the lower leg is in front of the horse, i.e. angled forward, while the caudal phase is when the leg is underneath the horse, i.e. angled backward. For a hind leg, the cranial phase occurs when the lower leg is under the body of the horse, and the caudal phase is when the limb is out behind the body of the horse.
Leg injuries that are not immediately fatal still may be life-threatening because a horse's weight must be distributed on all four legs to prevent circulatory problems, laminitis, and other infections. If a horse loses the use of one leg temporarily, there is the risk that other legs will break down during the recovery period because they are ...
Although support-limb laminitis is a risk for any horse that is not weight-bearing lame, occurring in roughly 16% of cases, it is uncommon in foals and yearlings. [135] It usually occurs weeks to months after the initial cause of lameness, [ 136 ] and greatly increases the likelihood of euthanasia of the patient. [ 137 ]
Support limb laminitis, which is the specific type Barbaro had, is caused by over-stressing the good leg during recovery from an injury in the opposite limb. [ 15 ] [ 16 ] A 1986 survey done by the Morris Animal Foundation found that laminitis was the fourth leading cause of death among horses. [ 17 ]
A flexion test is a preliminary veterinary procedure performed on a horse, generally during a prepurchase or a lameness exam. The purpose is to accentuate any pain that may be associated with a joint or soft-tissue structure, allowing the practitioner to localize a lameness to a specific area, or to alert a practitioner to the presence of sub-clinical disease that may be present during a pre ...
In addition, once a horse has had an episode, it appears to be predisposed to recurrence, and may suffer from "filled legs" permanently – i.e. if left in a stable and relatively immobile, poor lymphatic circulation results in a passive oedema of the previously affected limb, that dissipates on exercise.
Affected horses display a "tiptoe" gait – trying to walk on the toes due to heel pain. They may stumble frequently. The lameness may switch from one leg to another, and may not be consistent. Lameness usually occurs in both front feet, although one foot may be more sore than the other. Lameness is usually mild (1–2 on a scale of 5).
Mechanical laminitis can occur when a horse habitually paws, is ridden or driven on hard surfaces ("road founder"), or in cases of excessive weight-bearing due to compensation for the opposing limb, a process called support limb laminitis. Support limb laminitis is most common in horses suffering from severe injury to one limb, such as fracture ...
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