The prevalence of flat feet has been investigated by many researchers in different parts of the world. The true prevalence of flat foot is uncertain due to lack of exact clinical or radiographic criteria for defining flat foot. Rigid flat foot is often symptomatic and associated with tarsal coalitions and reduced range of motion at subtalar joint. FFF is generally asymptomatic while FFF-STA gives rise to pain and functional disability. rigid flat foot, Flexible Flat Foot (FFF) and Flexible Flat Foot With Short Tendo-Achilles (FFF-STA). įlat foot deformity was classified into three subtypes by Harris RT and Beath T, viz. Early shoe wearing in children impairs the development of longitudinal arches. Prevalence of flat feet is higher in children due to ligament laxity and declines with age. The arches of foot rapidly develop between two to six years and become structurally mature around 12-13 years. The arches become prominent when the child starts walking and the foot starts bearing the weight. The feet appear to be flat in infants due to presence of fat. The height of MLA is most important measurement in determining the degree of pes planus. Pes planus is a medical condition where the curvature of MLA is more flat than normal and entire sole of the foot comes into near complete or complete contact with the ground. Medial Longitudinal Arch (MLA) of foot is higher than the Lateral longitudinal arch and its curvature flattens to variable degree during weight bearing. The structure and dynamicity of foot arches are essential for functions of foot like shock absorption, body weight transmission and to act as a lever for propelling the body forward during locomotion.
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