Flat Feet

Flat feet are a foot shape in which the inner arch is low or not visible. When a person stands, the arch may flatten so more of the sole touches the ground. Flat feet can be present in children whose arches are still developing or in adults whose arches have always been low or have changed over time. Many people have no symptoms, but some develop pain or difficulty with walking and other activities.

Some people are born with a low arch, or the arch may never fully develop during childhood. In adults, the arch can flatten with age as tendons and other supporting tissues stretch or weaken. Injuries, arthritis, nerve or muscle conditions, and extra load on the feet can also contribute to a flat foot.

Flexible and rigid flat feet

With flexible flat feet, an arch appears when the foot is lifted or when the person is not standing, but it flattens under body weight. With rigid flat feet, the arch remains absent even when the foot is lifted, and the foot may feel stiff or painful. A new or one-sided change in the arch should be assessed by a healthcare professional because it may reflect a tendon problem, injury, arthritis, or another condition.

Having one or more risk factors does not mean a person will develop painful flat feet. A podiatry assessment can help identify whether symptoms are related to the foot structure or another problem.

Diagnosis usually begins with a medical history and an examination of the feet while sitting, standing, and walking. A clinician may check the arch, foot alignment, range of motion, flexibility, tenderness, muscle strength, and the way the feet move during walking. These steps can help show whether the flat foot is flexible or rigid and whether it is linked to pain or a change in function.

When imaging or specialist assessment may help

X-rays or other imaging may be recommended when there is significant pain, stiffness, an injury, arthritis, a rigid foot, or a newly developed flat foot. A primary care clinician may refer you to podiatry or orthopedics for a detailed assessment, particularly when symptoms are persistent or affect walking. If you are wondering how to tell if you have flat feet, an examination is more reliable than judging the arch from appearance alone.

Flat feet treatment depends on symptoms, foot flexibility, the cause, age, activity needs, and whether conservative care has helped. Many people improve with supportive measures, while selected persistent or structurally progressive cases may need specialist treatment or surgery.

Supportive treatment

Supportive care may include reducing activities that trigger pain, wearing comfortable supportive footwear, using arch supports or orthotics, and performing stretching or strengthening exercises. Pain relief may be appropriate for some people, and physical therapy can help improve strength, flexibility, balance, and walking mechanics. These measures can reduce symptoms and improve function, but arch supports do not permanently rebuild the arch; exercises should be tailored when pain or an underlying condition is present.

Flat foot surgery

Flat foot surgery is a specialist option for selected people with severe, persistent, rigid, or structurally progressive problems that have not improved with nonsurgical care. Procedures may repair or transfer tendons, realign bones, or stiffen selected joints, depending on the cause and foot structure. Recovery can involve immobilization, limited weight-bearing, rehabilitation, and months of healing, so an orthopedic or foot-and-ankle specialist should discuss the likely benefits, risks, and recovery plan.

Painless flat feet often remain harmless, and many children develop a more defined arch as they grow. Many adults also live normally with a flat foot, especially when it is flexible and does not cause symptoms. Adult-onset or painful flat feet may need monitoring and treatment to protect comfort, walking ability, and activity levels.