Signs
Heel pain is very common in horses with Navicular Syndrome. Lameness may begin as mild and intermittent, and progress to severe lameness. This may be due to strain and inflammation of the ligaments supporting the navicular bone, reduced blood flow and increased pressure within the hoof, damage to the navicular bursa or DDF tendon, or from cartilage erosion.
Affected horses display a "tiptoe" gait - trying to walk on the toes due to heel pain. They may stumble frequently. The lameness may switch from one leg to another, and may not be consistent. Lameness usually occurs in both front feet, although one foot may be more sore than the other.
Lameness is usually mild (1-2 on a scale of 5). It can be made worse when the horse is worked on a hard surface or on a circle.
After several months of pain, the feet may begin to change shape, especially the foot that has been experiencing the most pain, which tends to become more upright and narrow.
Read more about this topic: Navicular Disease
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