<Tr> <Td_colspan="2"> A flat foot </Td> </Tr> <Tr> <Th> Specialty </Th> <Td> Orthopedics </Td> </Tr> <P> Flat feet (also called pes planus or fallen arches) is a postural deformity in which the arches of the foot collapse, with the entire sole of the foot coming into complete or near - complete contact with the ground . An estimated 20--30% of the general population have an arch that simply never develops in one or both feet . </P> <P> There is a functional relationship between the structure of the arch of the foot and the biomechanics of the lower leg . The arch provides an elastic, springy connection between the forefoot and the hind foot . This association safeguards so that a majority of the forces incurred during weight bearing of the foot can be dissipated before the force reaches the long bones of the leg and thigh . </P>

What percentage of the population have flat feet