Feet usually have an arch on the inside portion of the foot. A flat foot is a foot that has lost or never developed this arch. It is often associated with the lower part of the legs being angled outwards

Most flat feet are flexible. This type rarely causes problems and usually do not require treatment. Rigid flat feet can cause problems and are best treated.

Normal Foot Arch
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Infants and young children naturally have flat feet. The arch should develop over time. Sometimes, the arch does not develop. It is not always clear why this happens.

Flat feet may develop because of:

  • Ruptured or damaged tendon that supports the arch
  • Medical conditions that affect muscles or nerves in the foot
  • Degenerative changes in certain foot joints
  • Ligament damage in the foot