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Pied plat

The flat foot, sometimes also called valgus foot or foot in excessive pronation, is a common condition characterized by a sag at the arch of the foot. The arch is crushed to the ground and in some cases the arch of the foot is in full contact with the ground when the person is standing. The correct alignment of the foot joints is no longer assured, thus causing the imbalance of the rest of the body posture. The ankles, knees, hips and lower back can be affected by flat feet that can cause pain in other places than the feet. However, it is common for the flat foot to cause no pain or discomfort.

The podiatrist is able to do a complete biomechanical examination to assess the extent and risks associated with your flat foot so you only have to prescribe the appropriate treatment to help you or refer you to the professional of choice If your pain is not associated with your flat feet.


The appearance of a flat foot in a child is normal, since up to the age of 3, children present a lot of baby's fat at the arch of the plantar, hiding the development of the arch and can be confused with a real flat foot. The procedure of a child with flat feet may be abnormal and the longer the child walks the more the problem becomes pronounced and the easier it is for the parent to notice. In some cases, children with flat feet will fatigue more quickly in the legs and feet during walking or during an activity that requires more movement. Painful fatigue in the muscles of the foot and leg is created because they do not work effectively.

The child may also suffer from pain in the feet, ankles, heels, knees, or even in the lower back.

It is therefore recommended to have the child evaluated by a podiatrist at an early age in order to ensure optimal development and growth in order to prevent complications that may occur in adulthood. Indeed, the majority of changes to the feet during growth through different treatments will be permanent.

Pied plat chez l'enfant
Pied plat


When the foot is fully developed, it is virtually impossible to correct its shape / alignment. The maintenance and prevention of certain pathologies associated with the flat foot can then be done by wearing a plantar orthosis on a daily basis. Active people are more at risk of developing pain due to flat feet since their feet are much more stressed than in a rather sedentary person. Many flat feet can be pain free and do not affect the quality of life.

Here are some problems that can be associated with a flat foot:

  • Hallux valgus (bunion)
  • Hammer toes
  • Plantar Fasciitis
  • Achilles Tendonitis / Posterior Tibial
  • Periostitis
  • Osteoarthritis due to misalignment of the joints of the foot
  • Foot pain, ankle, knee, lower back
Clinique Podiatrique Kirkland