Diabetic Footwear Resource Center

Flat foot, also known as pes planus, is a condition where the arch of the foot collapses, causing the entire sole of the foot to come into contact with the ground. There are several types of flat foot, each with its own characteristics:

1. Flexible Flat Foot: This is the most common type of flat foot and is usually painless. The arch of the foot appears normal when the person is sitting or standing on their toes, but collapses when they stand normally.
2. Rigid Flat Foot: Less common but more severe, this type of flat foot is characterized by a permanently flattened arch, even when the person is standing on their toes.
3. Congenital Flat Foot: This rare type of flat foot is present at birth and can be caused by abnormal bone development in the foot or a genetic predisposition.
4. Acquired Flat Foot: Develops over time, usually due to injury or illness. For example, it can occur as a result of tendon damage, arthritis, or nerve damage.
5. Posterior Tibial Tendon Dysfunction: This type of flat foot occurs when the posterior tibial tendon, which supports the arch of the foot, becomes damaged or inflamed, leading to the collapse of the arch.

It is important to note that not all cases of flat foot require treatment. However, if flat foot is causing pain or other symptoms, treatment options may include supportive shoes, orthotics, physical therapy, or in severe cases, surgery. A healthcare professional can provide a proper diagnosis and recommend the most appropriate treatment plan for each individual case.