Prevalence of flatfoot and anthropometric comparison between flat and normal feet in the Hausa ethnic group of Nigeria.

Background: Flat arches in children usually become proper arches and high arches as the child progresses through adolescence and into adulthood. Only if the deformity persists or presents in adolescence or adulthood is it considered abnormal. We sought to determine the incidence of flatfoot in schoolchildren and to make an anthropometric comparison between flat and normal feet with respect to age and sex in the Hausa ethnic group of Nigeria.