Laminitis in Connemara Ponies: Causes, Symptoms, Prevention and Treatment

Laminitis is one of the most painful conditions that can affect a horse or pony. It can develop suddenly, progress rapidly and, in severe cases, leave permanent damage to the hoof that changes a pony’s quality of life forever.

For owners of Connemara ponies, the condition deserves particular attention. While laminitis can affect any horse, native breeds often possess metabolic characteristics that make them especially vulnerable to the most common form of the disease: endocrinopathic laminitis, which is closely linked to insulin dysregulation.  

The encouraging news is that veterinary understanding of laminitis has advanced enormously. Researchers now know far more about why it develops, how to identify ponies at risk and, most importantly, how many cases can be prevented.

Understanding those advances could make the difference between recognising the earliest warning signs and facing a veterinary emergency.

What Is Laminitis?

Laminitis is an inflammatory and structural disease affecting the laminae, the highly specialised tissues that suspend the pedal bone (coffin bone) within the hoof capsule.

These microscopic laminae act like thousands of tiny interlocking fingers, holding the pedal bone securely in place while supporting the pony’s weight every time it walks, trots or gallops.

When laminitis develops, those tissues become damaged.

As the attachment weakens, the pedal bone may begin to rotate or sink within the hoof capsule. In severe cases, this can permanently alter the structure of the foot and cause lifelong pain.

This is why laminitis is always regarded as a veterinary emergency.

The earlier treatment begins, the greater the chance of limiting permanent damage.

Laminitis and Founder: Are They the Same Thing?

The two terms are often used interchangeably, but they do not mean exactly the same thing.

Laminitis describes the disease affecting the laminae.

Founder traditionally refers to the structural consequences that may occur if the laminae fail, particularly rotation or sinking of the pedal bone.

Not every pony with laminitis develops founder.

Equally, a pony that has suffered founder will always have experienced laminitis first.

Recognising the condition before permanent structural changes occur is one of the main goals of modern veterinary treatment.

Why Connemara Ponies Deserve Special Attention

Connemara ponies have evolved over centuries in the challenging landscape of Ireland’s west coast.

Food was often limited.

Grass was less abundant than that found in many modern grazing systems.

Survival depended upon making efficient use of every available calorie.

Those characteristics remain one of the breed’s greatest strengths.

Connemaras are renowned for being hardy, economical to feed and capable of maintaining excellent condition where many larger horses would lose weight.

Modern management, however, has changed dramatically.

Improved pasture, year-round grazing, concentrate feeds and reduced workloads mean many ponies consume considerably more energy than they expend.

For some individuals, that combination contributes to obesity, insulin dysregulation and a greatly increased risk of endocrinopathic laminitis. Research now identifies insulin dysregulation as the central feature of equine metabolic syndrome and the principal risk factor for this common form of laminitis.  

This does not mean every Connemara is destined to develop laminitis.

Many never do.

It does mean owners should understand the risk factors and recognise the earliest warning signs.

What Causes Laminitis?

One of the biggest misconceptions surrounding laminitis is that it has a single cause.

It doesn’t.

Veterinarians now divide laminitis into three main categories because each develops in a different way.

Endocrinopathic Laminitis

This is now recognised as the most common form of laminitis encountered in equine practice. It occurs when persistently high insulin concentrations damage the laminae. The underlying problem is usually equine metabolic syndrome (EMS), pituitary pars intermedia dysfunction (PPID, formerly Cushing’s disease), or another form of insulin dysregulation.  

Many owners still describe this as “grass laminitis”, but the grass itself is not the disease. The grass acts as a trigger by increasing insulin concentrations in susceptible ponies.

Understanding that distinction changes how veterinarians approach both diagnosis and long-term prevention.

Sepsis-Associated Laminitis

This form develops following severe illness.

Conditions such as retained placenta after foaling, severe diarrhoea, colitis or overwhelming infection can trigger a widespread inflammatory response throughout the body, damaging the laminae.

Although less common than endocrinopathic laminitis, it remains a medical emergency.

Supporting Limb Laminitis

Supporting limb laminitis occurs when a pony is forced to bear excessive weight on one limb for a prolonged period because the opposite limb is injured.

This type is uncommon but can be devastating, particularly after fractures or severe tendon injuries.

The Biggest Change in Veterinary Thinking

For many years, obesity was considered the primary cause of laminitis.

We now know that the picture is more complex.

Obesity certainly increases risk, but high circulating insulin concentrations are now regarded as the key driver of endocrinopathic laminitis. Some overweight ponies never develop the condition, while a pony that appears only moderately overweight may be at significant risk if it has insulin dysregulation. Experimental studies have even demonstrated that prolonged hyperinsulinaemia alone can induce laminitis in otherwise healthy ponies.  

That shift in understanding has transformed how vets investigate laminitis. Modern work-ups increasingly include testing for insulin dysregulation and PPID alongside treating the painful feet themselves.  

Equine Metabolic Syndrome: The Hidden Risk for Many Connemara Ponies

For decades, owners were told that laminitis happened because a pony was overweight or had eaten too much rich grass.

Although excess weight remains an important risk factor, modern research has shown that the underlying problem is often Equine Metabolic Syndrome (EMS).

EMS is not a single disease. It is a collection of metabolic abnormalities that make some horses and ponies far more likely to develop endocrinopathic laminitis. The condition is characterised by insulin dysregulation, with or without obesity, and is recognised as the most important risk factor for this form of laminitis.

In simple terms, a pony with EMS does not regulate insulin normally after eating. Following a meal containing sugars or starch, insulin concentrations may rise to much higher levels than expected or remain elevated for longer than they should.

It is these persistently high insulin concentrations—not the sugar itself—that damage the laminae.

This distinction is one of the biggest advances in equine medicine over the past twenty years.

What Is Insulin?

Insulin is a hormone produced by the pancreas.

Its role is to help move glucose from the bloodstream into cells where it can be used or stored.

In healthy horses, insulin rises after eating and then gradually falls again.

In a pony with insulin dysregulation, that process becomes abnormal.

The body may produce far more insulin than necessary, or tissues may become less responsive to insulin, requiring even higher concentrations to achieve the same effect.

Researchers have demonstrated that prolonged high insulin levels alone can trigger laminitis, even without inflammation or infection elsewhere in the body. That discovery fundamentally changed the way veterinarians understand and manage the disease.

Why Are Native Ponies More Vulnerable?

Connemaras, like many native breeds, evolved in environments where food was often scarce.

Natural selection favoured animals that could survive on poor grazing and make efficient use of limited nutrition.

These characteristics are sometimes described as a “thrifty” metabolism.

In today’s world, those same traits can become a disadvantage.

Improved pasture, energy-dense feeds and reduced workloads mean some native ponies consume considerably more energy than their metabolism evolved to handle.

The result may be obesity, insulin dysregulation and an increased risk of laminitis.

Importantly, not every Connemara develops EMS.

Many maintain normal insulin regulation throughout life.

Others may be genetically predisposed and require careful management, particularly as they age.

Can a Slim Connemara Get Laminitis?

Yes.

This surprises many owners.

While obesity increases the likelihood of insulin dysregulation, not every pony with EMS is visibly overweight.

Similarly, not every overweight pony has abnormal insulin regulation.

Body condition alone cannot determine risk.

Some ponies maintain what appears to be a reasonable weight but still have significantly elevated insulin concentrations after eating.

For this reason, veterinarians increasingly recommend laboratory testing for insulin in ponies that have experienced laminitis or are considered at increased risk.

Is a Cresty Neck a Warning Sign?

A thickened, firm crest along the top of the neck is one of the most recognisable signs associated with insulin dysregulation.

This fatty deposit is known as a cresty neck and is commonly seen in ponies with EMS.

However, a cresty neck should never be viewed in isolation.

Some stallions naturally have heavier necks, while some overweight ponies store fat in other areas of the body.

Veterinarians assess overall body condition as well as regional fat deposits.

Areas that deserve particular attention include:

• Along the crest of the neck.
• Behind the shoulders.
• Around the tail head.
• Above the eyes.
• Around the sheath in geldings.
• Around the udder in mares.

These localised fat deposits may indicate metabolic dysfunction even before obvious obesity develops.

Recognising the Early Warning Signs

Laminitis rarely appears without warning.

In many cases, subtle changes are present for hours or even days before severe lameness develops.

Learning to recognise these early signs can significantly improve the chances of a full recovery.

Early signs may include:

• A shorter, stiffer stride.
• Reluctance to turn tightly.
• Frequent shifting of weight between the front feet.
• Standing with the front feet stretched forwards in an attempt to reduce pressure on the toes.
• Increased time spent lying down.
• A reluctance to walk across hard or stony ground.
• A stronger-than-normal digital pulse.
• Increased warmth in the hoof wall or coronary band.
• Becoming unusually quiet or reluctant to move.

Some ponies show only one or two of these signs initially.

Owners who know their pony well often notice that “something just isn’t right” before obvious lameness develops.

That instinct should never be ignored.

When Is It an Emergency?

Always.

If you suspect laminitis, contact your veterinary surgeon immediately.

Do not wait to see whether the pony improves by the following day.

Early veterinary treatment reduces pain and offers the best opportunity to prevent permanent structural damage within the hoof.

Until your vet arrives, the priority is to minimise further injury.

Your vet will advise the most appropriate management for your individual pony, but in general this involves restricting unnecessary movement and providing deep, supportive bedding so the feet are well cushioned.

Does Grass Cause Laminitis?

Ask ten pony owners what causes laminitis and most will give the same answer:

“Rich grass.”

It’s understandable why this belief persists. Many cases occur during spring, when pasture is growing rapidly, or during periods of lush autumn grazing.

However, the grass itself is not the disease.

For most Connemaras that develop endocrinopathic laminitis, the real problem is the pony’s metabolic response to the sugars contained within the grass. Those sugars stimulate insulin release, and in ponies with insulin dysregulation, insulin concentrations can rise high enough to damage the laminae.

This explains why two ponies can graze the same field every day, yet only one develops laminitis.

The difference lies in the pony, not simply the pasture.

Why Grass Changes Throughout the Day

Grass is constantly changing.

During daylight, plants produce sugars through photosynthesis. These sugars are used for growth and stored within the plant.

The amount of sugar present at any one time depends on several factors, including:

• sunlight
• temperature
• rainfall
• growth rate
• soil conditions
• grazing pressure

There is no single “safe” time to graze because sugar concentrations can vary enormously from one field to another and from one day to the next.

This is why blanket statements about turnout are often misleading.

The Truth About Frosty Mornings

One of the most common pieces of advice is:

“Never turn your pony out on a frosty morning.”

There is some truth behind this, but the explanation is often oversimplified.

When grass experiences bright sunlight but temperatures remain very low, growth slows dramatically while photosynthesis may continue. The plant continues producing sugars but cannot use them efficiently for growth, allowing sugar concentrations to rise.

However, the presence of frost itself is not the issue.

What matters is whether the grass has resumed active growth.

A hard frost followed by prolonged cold may leave sugar concentrations elevated.

A frosty morning followed by warmer temperatures that allow active growth may produce a different situation altogether.

Rather than focusing on frost alone, it is more accurate to think about the conditions affecting plant growth.

Is Spring the Most Dangerous Time?

Spring is certainly a high-risk period for many ponies, but it is not the only time laminitis occurs.

Rapid grass growth during spring provides abundant nutrition, and many ponies begin spending longer periods at pasture after winter.

This combination can increase insulin responses in susceptible animals.

Autumn also deserves attention.

Following summer rain, grass often begins growing vigorously again while many owners assume the danger has passed.

Some of the most severe cases of laminitis occur during mild autumn weather.

Is Short Grass Safer?

Not necessarily.

This is another widespread misconception.

Very short, heavily grazed pasture can still contain high concentrations of water-soluble carbohydrates.

In addition, ponies grazing sparse pasture often consume grass very rapidly because they spend more time searching for every available blade.

Simply looking at grass height does not reliably indicate how much sugar a pony is consuming.

Should Connemaras Be Kept Off Grass Completely?

In most cases, no.

Grass provides natural forage, encourages movement and supports normal digestive health.

For many Connemaras, careful grazing management is perfectly compatible with long-term health.

The aim is not to eliminate pasture altogether but to match grazing to the individual pony’s level of risk.

A healthy young Connemara with no history of laminitis and normal insulin regulation may require very little restriction.

A pony with Equine Metabolic Syndrome and previous episodes of laminitis will usually need much more careful management.

Management should always be based on the individual pony rather than the breed alone.

Do Grazing Muzzles Work?

When fitted correctly, grazing muzzles are one of the most effective tools available for reducing pasture intake while allowing ponies to remain turned out with companions.

Research has shown that well-fitted grazing muzzles can substantially reduce grass intake, although the exact reduction varies between individuals and grazing conditions.

For many owners, they offer an effective compromise between complete stabling and unrestricted grazing.

However, grazing muzzles are not suitable for every pony.

They should:

• fit comfortably
• be checked daily
• allow unrestricted breathing
• allow access to water
• be removed regularly to inspect the skin for rubbing

A poorly fitting muzzle can cause painful sores and may discourage normal eating or drinking.

Is Strip Grazing Always the Best Option?

Strip grazing is widely used to limit grass intake, but it has limitations.

Some ponies adapt by eating the restricted grass much more quickly, reducing the benefit.

Others become frustrated and spend long periods standing at the fence rather than moving around.

For some animals, a well-designed track system encourages greater movement while naturally limiting grass intake.

No single grazing system is ideal for every pony.

The most effective management depends on:

• body condition
• insulin status
• pasture quality
• exercise levels
• previous history of laminitis
• individual behaviour

What About Hay?

For ponies requiring restricted grazing, hay often becomes an important source of forage.

The goal is to provide sufficient fibre while limiting excess sugars.

For some ponies at high risk of laminitis, veterinary surgeons or equine nutritionists may recommend soaking hay before feeding. Soaking can reduce water-soluble carbohydrate content, although the amount removed varies considerably depending on the type of hay, the duration of soaking and other factors.

Because soaking also removes some minerals, long-term feeding plans should be balanced appropriately rather than relying on soaked hay alone.

Haylage is more variable than hay and should not automatically be assumed to be suitable for ponies at risk of laminitis. Its nutritional composition can vary widely between products, making it important to understand exactly what is being fed.

Weight Management: Prevention Begins Long Before Laminitis

One of the greatest advantages Connemara owners have is the opportunity to prevent laminitis before it occurs.

Regularly assessing body condition is one of the simplest and most valuable health checks you can perform.

Rather than relying solely on a weigh tape, owners should become familiar with body condition scoring and learn where native ponies commonly store excess fat.

Small changes noticed early are far easier to correct than severe obesity that has developed over several seasons.

For many ponies, gradual weight loss achieved through controlled nutrition and appropriate exercise offers the greatest reduction in long-term laminitis risk.

Diagnosing Laminitis

Laminitis is often suspected from a pony’s history and clinical signs, but confirming the diagnosis and assessing its severity usually requires a combination of clinical examination and diagnostic tests.

Your veterinary surgeon will typically assess:

• The pony’s stance and gait.
• Digital pulses in each foot.
• Hoof temperature.
• Areas of pain using hoof testers.
• Body condition score.
• Fat distribution, particularly along the crest of the neck.

In many cases, blood tests will also be recommended to investigate the underlying cause rather than simply treating the painful feet.

These may include tests for:

• Insulin dysregulation, which is central to Equine Metabolic Syndrome (EMS).
• Pituitary Pars Intermedia Dysfunction (PPID), previously known as Cushing’s disease, particularly in older horses and ponies.

Identifying the underlying cause is essential because successful long-term management depends on treating the metabolic disorder as well as the feet.

Why X-rays Matter

One of the biggest advances in laminitis management has been the increased use of radiography.

Many owners worry that X-rays are only necessary if the pony is severely lame.

In reality, radiographs provide valuable information even in relatively mild cases.

They allow your vet and farrier to assess:

• Whether the pedal bone has rotated.
• Whether the pedal bone has sunk within the hoof capsule.
• Sole depth.
• Hoof balance.
• Progress during recovery.

Modern farriery increasingly relies on radiographs to guide trimming and shoeing decisions rather than estimating bone position from the outside of the hoof.

Treating Laminitis

Every case is different, but successful treatment usually has four main aims:

1. Relieve pain.
2. Prevent further damage to the laminae.
3. Treat the underlying cause.
4. Support healing of the hoof.

The sooner treatment begins, the better the long-term outlook.

Pain Relief

Laminitis is an intensely painful condition.

Veterinary pain relief is one of the first priorities.

Non-steroidal anti-inflammatory drugs (NSAIDs), such as phenylbutazone, are commonly used to reduce pain and improve comfort.

Additional medications may be recommended depending on the individual case.

Pain relief should never be delayed while waiting to see whether the pony improves.

Cryotherapy: Cooling the Feet

One of the most important developments in recent years has been the growing evidence supporting continuous cryotherapy during the early stages of laminitis.

Cryotherapy involves cooling the lower limbs, usually by immersing the feet and lower legs in ice water.

Research has shown that early, continuous cooling can reduce inflammation and help limit damage to the laminae in certain forms of laminitis, particularly when started before extensive injury has occurred.

It is not always practical in every situation, but referral hospitals now commonly use cryotherapy as part of intensive treatment for high-risk cases.

This is an area where veterinary advice has evolved considerably over the last decade.

Supporting the Feet

Reducing stress on the damaged laminae is another key part of treatment.

Deep bedding allows the pony to distribute weight more comfortably.

Various forms of frog and sole support may also be used to improve comfort and reduce mechanical strain.

Exactly which support is most appropriate depends on the individual pony and should be guided by your vet and farrier.

The Importance of the Farrier

Successful recovery depends on teamwork.

Veterinarian and farrier should work closely together throughout treatment.

As the hoof grows, careful trimming—and, in some cases, therapeutic shoeing—helps restore normal hoof balance while reducing stress on the damaged laminae.

There is no single shoe that is right for every pony.

The best approach depends on radiographic findings, the stage of the disease and the pony’s comfort.

Recovery

Recovery from laminitis varies enormously.

Some ponies recover within weeks.

Others require many months of careful management.

New hoof wall grows slowly, and it may take nine to twelve months—or longer—for a complete new hoof capsule to grow.

Even after apparent recovery, the underlying metabolic problem often remains.

This is why ongoing management is so important.

Can Laminitis Be Prevented?

Many cases can.

The most effective prevention strategies include:

• Maintaining a healthy body condition.
• Testing ponies suspected of having EMS or PPID.
• Managing grazing carefully.
• Providing regular exercise where appropriate.
• Monitoring weight throughout the year rather than only in spring.
• Seeking veterinary advice after any previous episode of laminitis.

For Connemaras, prevention is often much easier than treatment.

Buying a Connemara Pony

If you are buying a Connemara, particularly one that is overweight or has a prominent cresty neck, it is sensible to ask direct questions.

These might include:

• Has the pony ever had laminitis?
• Has it been tested for EMS?
• Has it been tested for PPID if older?
• Does it require restricted grazing?
• Does it wear a grazing muzzle?
• Has it had foot radiographs?
• Is it currently receiving medication?

A previous episode of laminitis does not necessarily mean a pony cannot enjoy a useful life.

Many return to successful ridden careers.

The important point is understanding exactly what management is required.

Breeding Considerations

Laminitis itself is not inherited in the way that coat colour or certain single-gene diseases are.

However, some of the metabolic characteristics that increase the risk of endocrinopathic laminitis, particularly insulin dysregulation, have a heritable component.

This raises important questions for breeders.

While breeding decisions should never be based on one characteristic alone, repeatedly breeding from ponies with significant metabolic disease deserves careful consideration.

Maintaining genetic diversity remains important, but so too does selecting breeding stock with good long-term health and soundness.

As our understanding of equine genetics improves, these decisions are likely to become better informed.

Common Myths About Laminitis

“Only overweight ponies get laminitis.”

False.

Obesity increases risk, but laminitis can occur in ponies that appear to be an appropriate weight if they have insulin dysregulation or another underlying condition.

“Laminitis only happens in spring.”

False.

Spring is a high-risk period, but cases occur throughout the year, including autumn and even winter.

“Grass is always dangerous.”

Not true.

Most healthy horses and ponies graze successfully throughout their lives.

The problem usually arises when a metabolically susceptible pony is exposed to conditions that trigger excessive insulin responses.

“Once recovered, the pony is cured.”

Unfortunately not.

A pony that has suffered endocrinopathic laminitis remains at increased risk unless the underlying metabolic disorder is managed.

Frequently Asked Questions

Can a Connemara recover completely from laminitis?

Many do.

The outlook depends on how quickly treatment begins, whether permanent damage has occurred and how successfully the underlying cause is managed.

Can young Connemaras get laminitis?

Yes.

Although PPID usually affects older horses, Equine Metabolic Syndrome can occur in much younger ponies.

Is exercise safe?

During an acute laminitis episode, exercise is not appropriate.

Once your veterinary surgeon confirms the laminae are stable and pain is controlled, carefully managed exercise often becomes an important part of long-term treatment for ponies with EMS.

The timing should always be guided by your vet.

Should I soak hay?

For ponies requiring strict dietary control, soaking hay may reduce water-soluble carbohydrates.

Whether it is appropriate depends on the individual pony and the hay being fed, so discuss this with your vet or an equine nutritionist.

Key Points

• Laminitis is a veterinary emergency.
• Most modern cases in native ponies are associated with insulin dysregulation.
• Connemaras are not destined to develop laminitis, but their efficient metabolism means some individuals require careful management.
• Early recognition dramatically improves the chances of recovery.
• Modern treatment focuses on pain relief, supporting the feet, identifying the underlying cause and long-term metabolic control.
• Prevention through weight management, appropriate grazing and early veterinary intervention remains the most effective strategy.

Conclusion

Laminitis has long been one of the most feared conditions affecting horses and ponies, but our understanding of the disease has changed profoundly. Today, it is clear that the greatest threat to many native ponies is not simply rich pasture but the interaction between grazing, insulin regulation and an individual’s metabolism.

For Connemara owners, that knowledge is empowering. Careful weight management, thoughtful grazing strategies and prompt veterinary attention can prevent many cases and greatly improve outcomes when laminitis does occur.

A healthy Connemara should be admired for its hardiness and ability to thrive. Those same qualities simply require owners to manage modern diets and grazing with the breed’s unique characteristics in mind. Understanding that balance is one of the most effective ways to keep these remarkable ponies healthy, comfortable and active for years to come.

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