Treating laminitis in horses requires immediate action to reduce pain, limit damage inside the hoof, and address whatever triggered the episode. The outcome depends heavily on how quickly treatment begins and how severe the internal changes are. Horses with less than 5.5 degrees of coffin bone rotation have a good chance of returning to full athletic function, while those with more than 11.5 degrees rarely do. Every hour matters in the acute phase.
Recognizing Severity Before You Treat
Laminitis severity is graded on a four-point scale originally developed by Obel. Understanding where your horse falls helps guide how aggressive treatment needs to be:
- Grade 1: The horse shifts weight between its front legs at rest. It walks normally but looks stiff at the trot, especially on turns.
- Grade 2: The walk itself is stiff and stilted. Turning is very difficult, but the horse will still let you pick up a front foot.
- Grade 3: The horse resists walking. Picking up a front foot is extremely difficult because it doesn’t want to bear full weight on the opposite leg.
- Grade 4: The horse refuses to move unless forced.
Grades 3 and 4 are emergencies. But even a Grade 1 horse needs veterinary attention the same day, because the inflammation inside the hoof can progress rapidly from mild lameness to permanent structural damage.
Your vet will likely take X-rays to measure two critical values: the degree of coffin bone rotation and the “founder distance,” which is the gap between the top of the coffin bone and the coronary band. In healthy horses, that gap averages about 3.5 to 4 millimeters. Horses with a founder distance under about 8 mm tend to respond well to treatment. Those above 15 mm have a very poor prognosis.
Immediate Cooling of the Feet
Continuous icing of the lower legs and hooves is one of the most effective interventions in acute laminitis. The goal is to get hoof wall temperature below 10°C (50°F) and keep it there. This slows the inflammatory cascade that destroys the tissue connecting the coffin bone to the hoof wall.
The most common method is standing the horse in rubber boots or buckets filled with an ice-water slurry. The key word is “continuous.” Intermittent icing doesn’t achieve the same protective effect. Some horse owners use commercial cryotherapy boots designed for this purpose, which make it easier to maintain contact and replenish ice. During an active episode, cooling should continue around the clock for as long as the triggering condition persists, whether that’s a grain overload being processed through the gut or a systemic infection being treated.
Pain Management
Laminitis is intensely painful, and controlling that pain is essential both for the horse’s welfare and to keep it moving enough to maintain blood flow to the feet. Anti-inflammatory medications are the foundation of pain control. The two most commonly used are phenylbutazone (“bute”) and flunixin, both of which reduce inflammation and provide significant pain relief.
These drugs work by blocking the enzymes that drive inflammation, but that same mechanism can cause stomach ulcers, especially with prolonged use. Your vet will balance the dose and duration carefully. Flunixin is approved for intravenous use once daily for up to five days. Intramuscular injection is not recommended because of a serious risk of bacterial muscle infection. Bute is typically given orally and is often the go-to for longer-term management because of its convenience and effectiveness for musculoskeletal pain.
In severe cases, your vet may add other forms of pain relief, including nerve blocks or drugs that target pain through different pathways. A horse that’s too painful to stand or shift weight is at risk of developing problems in the opposite limbs from overloading them.
Addressing the Underlying Cause
Laminitis is almost always a symptom of something else. Treating the feet without addressing the trigger leads to repeated episodes. The two most common underlying causes are hormonal disorders: Equine Metabolic Syndrome (EMS) and Pituitary Pars Intermedia Dysfunction (PPID, formerly called Cushing’s disease).
EMS is essentially insulin resistance. Affected horses are often overweight with abnormal fat deposits on the crest of the neck, behind the shoulders, or above the tail. The high insulin levels directly damage the hoof tissues. Management centers on weight loss, dietary changes, and exercise once the horse is sound enough.
PPID is common in older horses and involves overproduction of hormones from the pituitary gland. Signs include a long, curly coat that doesn’t shed normally, muscle wasting, and recurring infections. Treatment with pergolide, a medication that regulates the overactive pituitary, typically starts at a low dose and is adjusted based on how the horse responds clinically and on follow-up blood work. Most horses with PPID need this medication for life.
Other triggers include grain overload (a horse breaking into the feed room), retained placenta after foaling, severe colic, or prolonged weight-bearing on one leg due to an injury on the other. Each of these requires its own specific treatment alongside the laminitis care.
Dietary Changes
Diet is one of the most controllable factors in laminitis management. The critical number is the non-structural carbohydrate (NSC) content of your horse’s feed and hay. NSC includes sugars and starches, which drive insulin spikes that can trigger or worsen laminitis.
High-risk horses should eat a diet containing less than 10% NSC on a dry matter basis. Moderate-risk horses can tolerate up to 15 to 20%. To put that in practical terms: lush spring pasture can run 25 to 35% NSC, which is why turnout on green grass is one of the most common triggers for laminitis in susceptible horses.
During an active episode, pull the horse off pasture entirely. Feed only grass hay that has been tested or soaked in cold water for 30 to 60 minutes to leach out soluble sugars. Avoid grain, sweet feeds, treats, and anything containing molasses. A vitamin and mineral supplement is usually needed to fill nutritional gaps, since the diet is intentionally restricted. Your vet or an equine nutritionist can help you get hay tested, which costs relatively little and removes the guesswork.
Therapeutic Farriery
Corrective hoof care is central to laminitis treatment, both in the acute phase and during long-term recovery. The goals are to stabilize the coffin bone, reduce tension from the deep digital flexor tendon pulling on it, and redistribute weight away from the damaged hoof wall.
In the immediate crisis, soft support under the frog and sole provides relief. Many vets recommend commercially available foam pads or molded impression material that conforms to the bottom of the foot. This shifts some weight-bearing from the hoof wall to the frog and sole, which are better positioned to support the coffin bone when the normal attachment is compromised.
As the horse stabilizes, a therapeutic farrier may apply heart-bar shoes. These shoes include a plate that extends across the back of the foot and covers the frog, providing direct support to the coffin bone from below. Research on cadaver limbs has shown that heart-bar shoes stabilize the coffin bone so effectively that it moves no more than it does in a healthy hoof. By contrast, open-heeled and egg-bar shoes actually allowed the coffin bone to move away from the coronary band in laminitic hooves, making them less effective choices.
Heel elevation is another common strategy. Raising the heels slightly reduces the pull of the deep digital flexor tendon on the back of the coffin bone, which is one of the forces driving rotation. Your farrier and vet should collaborate closely on the trimming and shoeing plan, guided by updated X-rays that show exactly how the coffin bone is positioned inside the hoof.
Recovery Timeline and Stall Rest
Laminitis recovery is measured in months, not weeks. A new hoof wall takes roughly 8 to 12 months to grow from the coronary band to the ground. Until that new, properly attached wall grows in, the foot remains vulnerable. During this time, the horse needs regular farrier visits every 4 to 6 weeks to maintain correct balance and support.
In the early weeks, stall rest on deep, supportive bedding is standard. Sand or shavings over rubber mats gives the feet cushioning while the horse stands. Forced exercise is harmful during the acute phase, but complete immobility isn’t ideal either. Small amounts of hand-walking can begin once the pain is controlled and the vet confirms the coffin bone is stable on X-rays.
Return to work, if it happens at all, is gradual and depends on the severity of the original episode. Horses that had minimal rotation and responded quickly to treatment can often return to light riding within a few months of being sound. Horses with significant structural changes may be pasture-sound but never return to athletic work.
When Surgery Becomes Necessary
In cases where the coffin bone continues to rotate or sink despite aggressive treatment, a surgical procedure called a deep digital flexor tenotomy may be considered. This involves cutting the tendon that pulls on the back of the coffin bone, immediately relieving the force driving the bone downward. It is a salvage procedure, used only when all other treatments have failed and the horse is facing euthanasia otherwise.
The surgery can be performed with the horse standing under sedation and local anesthesia. It doesn’t restore the foot to normal, but it can halt the progressive destruction and allow the horse to be comfortable at pasture. Combined with corrective farriery and ongoing management, some horses that undergo this procedure live comfortably for years afterward, though competitive athletic use is generally not expected.