Navicular Syndrome Explained
Navicular syndrome is chronic heel pain in the back of the front feet. Learn the signs, the role of hoof balance, and how it is diagnosed and managed in horses.
Quick definition: Navicular syndrome is chronic pain and degeneration of the navicular bone and the soft tissues around it, deep in the heel of the front feet. It is a leading cause of front-end lameness and heel pain, often producing a toe-first landing and a short, choppy stride. It cannot be cured, but corrective farriery and veterinary care keep many horses comfortable for years.
Navicular syndrome is one of the more confusing diagnoses an owner can hear, partly because the name points to a single small bone while the real problem usually involves several structures. The navicular bone is a small, boat-shaped bone tucked behind the coffin joint in each front foot, and around it sit a fluid-filled bursa, the deep digital flexor tendon, and supporting ligaments. When this whole region becomes painful and degenerative, the result is navicular syndrome.
Because so many tissues can be involved, many veterinarians now prefer the broader terms caudal heel pain or palmar foot pain. Whatever the label, the practical reality for the owner is a horse with recurring or progressive front-leg lameness that traces back to the heels.
Recognizing the Signs
- Bilateral front-leg lameness, often worse on hard ground or when circling.
- A toe-first landing as the horse tries to spare its painful heels.
- A short, choppy, stilted stride that can look like general stiffness.
- Stumbling, pointing one front foot at rest, or reluctance to go downhill.
- Lameness that shifts between the front feet and may come and go early on.
Why Hoof Balance Matters
Conformation and trimming are central to navicular syndrome. Long toes and low, underrun heels increase the strain on the navicular region with every stride, while a well-balanced foot reduces it. This is why farriery is the foundation of management. Restoring proper hoof balance, easing breakover, and supporting the heels can dramatically change a horse\'s comfort.
How It Is Diagnosed
A veterinary lameness exam comes first, using hoof testers and flexion tests, often with diagnostic nerve blocks to confirm the pain is in the heel. Radiographs reveal changes to the navicular bone itself, while MRI is the gold standard for seeing the deep digital flexor tendon, bursa, and ligaments. A careful workup is important because heel pain has several possible causes.
Management for Senior Horses
There is no cure, but many horses stay usable for years. Corrective shoeing or trimming to balance the foot and support the heels is the cornerstone, sometimes with wedge pads or special shoes. Veterinarians add anti-inflammatory medication, coffin joint or navicular bursa injections, bisphosphonate drugs in suitable cases, and a sensible exercise plan on good footing. A coordinated farrier and veterinary team gives the best results.
For hands-on detail, see navicular in senior horses and the comparison of navicular versus arthritis. Related reading includes arthritis in senior horses, ringbone, and the farrier schedule for senior horses.
This page is educational and does not replace your veterinarian or farrier. Persistent or recurring lameness needs a professional lameness exam.
Senior Horse Care Planner
Track your senior horse's vital signs, feed and body condition, farrier and dental schedule, medications, and quality of life, all in one printable planner.
Frequently Asked Questions
What is navicular syndrome in horses?
Navicular syndrome is chronic pain and degeneration involving the navicular bone and the structures around it, deep within the back of the front feet. It includes the navicular bone, its bursa, the deep digital flexor tendon, and supporting ligaments. The condition causes recurring or progressive front-end lameness and is a common cause of heel pain in horses. Modern veterinarians often call it caudal heel pain or navicular disease to reflect how many tissues can be involved.
What are the signs of navicular syndrome?
The classic sign is bilateral front-leg lameness that is often worse on hard ground or on a circle, with the horse landing toe-first to spare the painful heels. Horses may have a short, choppy stride, stumble, point one foot at rest, or seem reluctant to go downhill. The lameness can shift between front feet and may come and go early on. Because both front feet are usually affected, the gait can look stiff rather than obviously lame.
What causes navicular syndrome?
It is multifactorial. Repeated concussion and stress on the navicular region, poor hoof conformation such as long toes and low or underrun heels, imbalanced trimming, and genetics all contribute. Bigger horses on small feet and those in concussive work are at higher risk. Over time the navicular bone, its bursa, and the deep digital flexor tendon degenerate. It is more about chronic wear and biomechanics than a single injury.
How is navicular syndrome diagnosed?
Diagnosis starts with a lameness exam, including hoof testers and flexion tests, often followed by diagnostic nerve blocks to localize the pain to the heel region. Imaging then defines the problem: radiographs show changes to the navicular bone, while MRI is the gold standard for seeing the soft tissues like the deep digital flexor tendon and the bursa. A thorough workup matters because heel pain has several possible sources.
Can navicular syndrome be treated?
It cannot be cured, but many horses are kept comfortable for years. The cornerstone is corrective farriery to restore hoof balance, shorten long toes, and support the heels, sometimes with special shoes or wedge pads. Veterinarians add anti-inflammatory medication, joint and bursa injections, bisphosphonate drugs, and a managed exercise plan. Outcomes vary, but a coordinated farrier and veterinary approach often allows continued soundness.
How does navicular differ from arthritis in senior horses?
Both cause lameness, but they affect different structures. Navicular syndrome centers on the navicular region deep in the heel of the front feet, producing toe-first landing and heel pain. Arthritis is inflammation and degeneration of a joint and can occur anywhere, commonly hocks, knees, fetlocks, or coffin joints. A senior horse can have both at once, which is why a veterinary lameness exam with imaging is needed to tell them apart.
Need more help with your senior horse?
Browse our guides by topic to find practical solutions.
Wellness Planner: $39