Children's Hospital Colorado

Flatfoot in Children

Kids aren’t just mini adults. In fact, they’re incredibly different. That’s why they need incredibly different care.

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What is flatfoot?

Most babies are born with almost no arch in their feet. Within 2 to 3 years of age, after toddlers have been walking for a while, the arch develops. If the arch does not form fully or it goes away when standing or bearing weight, this is known as "flatfoot."

Flatfoot is a condition that occurs when the arch seems to shrink or disappear, making the foot look flat. There are two types of flat footedness, known as flexible flatfoot and rigid flatfoot.

What is flexible flatfoot?

Flexible flatfoot is a normal variant and usually does not require treatment, nor does it cause pain, disability or other symptoms. Most children eventually outgrow flexible flatfoot without any problems.

What is rigid flatfoot?

Rigid flatfoot is much less common and usually causes other symptoms like pain and disability. Rigid flatfoot often occurs in kids with problems with the bones in their feet.

What causes flat footedness?

A foot's arch is dependent on three things: The anatomy of the bones, the muscles and tendons of the foot and the ligaments. Young children's ligaments are generally loose (known as "ligamentous laxity") and therefore when they stand, the ligaments cannot support the arch. As children age, however, the ligaments tighten up. By about age 5, most kids with flatfeet will develop a normal arch.

Some children continue to have flat feet throughout life, which is not a cause for concern as long as they are not in pain.

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Get to know our pediatric experts.

Alison Colbert, PhD

Alison Colbert, PhD


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Robert Hamblin, PA-C

Robert Hamblin, PA-C

Physician Assistant

Sarah Tlustos-Carter, PhD

Sarah Tlustos-Carter, PhD

Neuropsychology, Neuropsychology - Pediatric

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Kim Sawyer, CPNP-PC

Kim Sawyer, CPNP-PC

Certified Pediatric Nurse Practitioner