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

Laminitis Research Donors Honored at AAEP



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Laminitis Seminar Offered on West Coast

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Among the hot topics this year were nutritional supplements, infectious disease, and metabolism problems.

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Ohio State Vet Honored for Laminitis Research

James Belknap, DVM, MS, PhD, Dipl. ACVS, associate professor of equine surgery in the Department of Veterinary Clinical Sciences at The Ohio State University, has been awarded the annual Equine Veterinary Journal Open Award for 2007 for

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TheHorse.com Announces Four New Electronic Newsletters

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Learn how equine podiatrists assess, treat, and monitor laminitis. Laminitis is a terrifying mystery to many horse owners, in part because in the early stages a horse with tremendous damage can look and act much like a mil

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Managing Acute and Chronic Laminitis

Belknap (who co-hosted TheHorse.com’s Webinar on Understanding Laminitis) said the latest research points to laminitis as an intense inflammatory injury of the foot, and it is no longer believed to be solely a blood flow problem.

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Wooden Shoes for Chronic Laminitis

The chronically laminitic horse is often a very tough case to manage because displacement of the coffin bone within the foot leads to a lot of pain and damage, in addition to the damage that allowed the displacement in the first place.

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