High Arch Feet (Pes Cavus) is a condition where the arch of the foot is raised more than normal. The arch, or instep, runs from the toes to the heel on the bottom of the foot. It is also called pes cavus. High arch feet is the opposite of flat feet.

CAUSES, INCIDENCE, AND RISK FACTORS
High foot arches are much less common than flat feet. They are more likely to be caused by a bone (orthopedic) or nerve (neurological) condition.
Unlike flat feet, high arched feet tend to be painful because more stress is placed on the section of the foot between the ankle and toes (metatarsals). This condition can make it difficult to fit into shoes.
People who have high arches usually need foot support with custom orthotics. A high arch may cause disability.

SYMPTOMS
A "C" shaped shortened foot length which can cause difficulty in finding properly fitting shoes. Foot pain with walking, standing, and running (not everyone has this symptom).

SIGNS AND TESTS
When the person stands on the foot, the in step looks hollow and most of the weight is on the back of the heel, outside part of the foot and balls of the foot.
One may have a flexible or rigid high arched foot.
Tests that may be done include: X-ray of the feet, neurological tests, and MRIs/CTs of the feet.