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

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

Read More

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.

Read More

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

Read More

Barbaro Memorial Fund to Benefit Laminitis Research

The National Thoroughbred Racing Association announced today (Feb. 1) that it will lead a national fundraising program, the NTRA Charities Barbaro Memorial Fund, to raise awareness and money for equine health and safety research in the name of

Read More

Readers Vote: Top Hoof Issues




A poll of readers showed laminitis, navicular disease, and barefoot vs. shod were their top issues involving horse feet.


When horse owners wer

Read More

Barbaro “A Horse That Wants to Live”

Every time the outlook was grim for Barbaro, the Kentucky Derby winner pulled through like a champ.

Time will tell if he can do it again.

After months of upbeat progress reports, the horse suffered a significant setback Wednesday

Read More

More From The Horse

1861117807_2679871376001_Standing-wraps
Fine art horse nose with black copy space
Beautiful horses, animals, pasture, stables, horseback riding
White horse nose detail

Stay on top of the most recent Horse Health news with

FREE weekly newsletters from TheHorse.com

Weekly Poll

sponsored by:

What’s your biggest challenge when trying to improve barn air quality?
39 votes · 39 answers

Create a free account with TheHorse.com!

The Horse
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.