Causes of Flatfoot

Causes of Flatfoot 

Family history - experts say fallen arches can run in families.

Weak arch - the arch of the foot may be there when no weight is placed on it, for example, when the person is sitting. But as soon as they stand up the foot flattens (falls) onto the ground.

Injury

Arthritis

Tibialis posterior (ruptured tendon)

Pregnancy

Nervous system or muscle diseases - such as cerebral palsy, muscular dystrophy, or spina bifida.

Tarsal Coalition - the bones of the foot fuse together in an unusual way, resulting in stiff and flat feet. Most commonly diagnosed during childhood.

Diabetes

Age and wear and tear - years of using your feet to walk, run, and jump eventually may take its toll. One of the eventual consequences could be fallen arches. The posterior tibial tendon may become weakened after long-term wear a tear. The posterior tibial tendon is the main support structure of the arch of our feet. The tendon can become inflamed (tendinitis) after overuse - sometimes it can even become torn. Once the tendon is damaged, the arch shape of the foot may flatten.[1]

Sources:

1. Nordqvist, Christian. "What Are Flat Feet (pes Planus, Fallen Arches)? What Causes Flat Feet?" What Are Flat Feet (pes Planus, Fallen Arches)? What Causes Flat Feet? N.p., n.d. Web. 28 Jan. 2016. <http://www.medicalnewstoday.com/articles/168608.php>.

Direct source:
http://www.medicalnewstoday.com/articles/168608.php