High severity

Navicular Syndrome

Navicular syndrome is chronic lameness from degeneration of the navicular bone, surrounding ligaments, and the deep digital flexor tendon. It typically affects both front feet and is most common in Quarter Horses, Thoroughbreds, and Warmbloods.

Symptoms to watch for

Bilateral front-leg lameness, often shifting from one foot to the other

Short, choppy stride that worsens on hard ground

Pointing one front foot forward at rest

Stumbling, especially turning in tight circles

Heel pain on hoof tester examination

Worse on the inside leg of a circle

Symptoms develop gradually over months

Common causes

Genetic conformation (small feet, long pasterns, low heels)
Repetitive concussion from work on hard surfaces
Poor or infrequent farriery causing imbalance
Excessive weight
Tight or contracted heels

Prevention

Maintain regular 5–6 week farrier visits with a farrier experienced in caudal foot support
Keep heels healthy with appropriate shoeing or barefoot trimming
Avoid sustained work on hard or uneven surfaces
Manage body weight to reduce loading
Conformation-aware breeding selection

What to do

1
Confirm diagnosis with vet — nerve blocks and radiographs are standard.
2
Implement therapeutic shoeing: rolled toe, raised heels, or wedge pads as directed.
3
Discuss medication: NSAIDs, isoxsuprine, or bisphosphonates with your vet.
4
Modify exercise — keep horse moving on soft footing, avoid concussion.
5
Maintain a 4-week farrier cycle.
6
Re-radiograph annually to monitor progression.

When to call the vet

Pick up the phone if…

Schedule a vet visit if your horse develops gradual front-end lameness, especially if both legs are affected. Early diagnosis enables conservative management to keep the horse comfortable for years.