Pes planus

• absence of longitudinal arch of foot when standing
• foot pain
• heel tilts away from the midline of the body more than usual

Examination of the foot is sufficient for the health care provider to make the diagnosis of flat foot. However, the underlying cause must be determined. If an arch develops when the patient stands on their toes, then the flat foot is called flexible and no treatment or further work-up is necessary.

If there is pain associated with the foot or if the arch does not develop with toe-standing, X-rays are necessary. If a tarsal coalition is suspected, a CT scan is often ordered. If a posterior tibial tendon injury is suspected, your health care provider may recommend an MRI.

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