Sponsor
Pes planus or a Flatfoot is characterised by a flattened arch with the foot pointed more outwards and or pronated. Children gradually develop the arch of their feet as they grow older. A proportion of the normal adult population can continue to have flatfeet due to their genetic predisposition or a tarsal coalition (an abnormal persistent connection between bones in the foot), or be associated with an accessory navicular (an extra bone on the inner side of the foot near their arch) which are often asymptomatic. This is in contrast to an adult acquired flatfoot which can occur as a result of tibialis posterior tendon dysfunction, arthritis, injury to the Lisfranc joint or Charcot arthropathy. A flatfoot deformity can progress over time and predispose to early hind-midfoot joint degeneration.