Flat feet

Also called Pes planus or Fallen arches

Flat feet means the arches on the inside of your feet are low or missing, so most of the sole touches the floor when you stand. All babies have flat feet, and arches usually develop during childhood. Some adults keep flat feet, and arches can also drop later in life.

Last updated Nov 9, 2026

What it is

Flat feet usually cause no problems and need no treatment.

If they cause pain, supportive shoes, insoles, stretching exercises and losing weight can help. Surgery is rarely needed.

Common signs

  • Little or no arch when standing
  • Pain in the feet, ankles or legs after activity
  • Shoes wearing unevenly

How it is usually diagnosed

  • Examination of the feet
  • X-rays, sometimes

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Podiatry or orthopaedic letters
  • X-ray reports
  • Insole prescriptions

Questions to ask your doctor

  • Do my flat feet need treatment?
  • Would insoles help?
  • Could they be causing my knee or back pain?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • A foot that suddenly becomes flat, swollen and painful after an injury: get it checked the same day

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

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