Laminitis (Founder)

Laminitis (commonly called “founder”) affects an estimated 7-14% of the world’s equine population. It’s the inflammation of the tiny, interwoven lamellae that attach a horse’s hoof to the underlying coffin bone (third phalanx, or P3) and support the horse’s entire body weight. Anything that impacts the integrity of the lamellae, such as inflammation, weakens their hold. This causes the coffin bone to displace within the hoof capsule and move toward the ground. The condition is very painful and is often life-threatening to horses.

Causes of Laminitis

The same disease has several different causes, which include:

  • Endocrine-associated laminitis, which is the most common cause, occurs in horses with insulin dysregulation, often due to equine metabolic syndrome (EMS) or pituitary pars intermedia dysfunction (PPID, or equine Cushing’s disease ), and exacerbated by ingestion of starch and sugars in feed or pasture (grass founder).
  • Sepsis-related laminitis is due to toxins in the bloodstream of sick horses (e.g., those with diarrhea, colic, retained placenta, or metritis—uterine infection);
  • Supporting-limb laminitis, which is caused by excessive weight bearing on a limb as a result of a painful injury in the opposite limb (e.g., fracture).

Clinical Signs (Symptoms) of Laminitis in Horses

  • Reluctance or inability to walk, or profound lameness;
  • Frequent weight shifting;
  • Abnormal stance and weight distribution to relieve pressure on the affected limb(s);
  • Increased heart and respiratory rate, and sweating;
  • Glazed, pained facial expression;
  • Bounding digital arterial pulses; and
  • Feet that are consistently warmer than usual to the touch.
Subcategories:
None

The Quest to Conquer Laminitis

“Owners and trainers worldwide have the feeling that every veterinarian and every farrier have years of experience and vast knowledge about laminitis and podiatry (foot care). Unfortunately, this is not the case,” said Ric Redden, DVM, founder of

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Pain Management for the Laminitic Horse

Laminitis is an incredibly painful hoof disease in the horse. We should all be very aware of this since despite top-notch care, 2006 Kentucky Derby winner Barbaro was humanely euthanatized due to unresolvable pain from laminitis.

Laminitis

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Chronic Laminitis

When a horse founders and the damaged laminae that hold the coffin bone to the hoof wall release their grip, the coffin bone is no longer held in place. It rotates (tips down at the front) or slips downward in the hoof. The goal when shoeing these

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Laminitis Lessons: What Not to Do

Baker, who is both a veterinarian and a farrier, presented a discussion of six case studies and what they taught him not to do in treating laminitis. He began by describing the following common causes of treatment failure.

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Barbaro: A Life With Meaning

The heartbreaking end to Barbaro’s saga was all too familiar to those who love horses, but the true meaning behind the story is uplifting and, as Roy Jackson (who owned Barbaro with his wife, Gretchen) says, full of positives and inspiration. On

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