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(also talipes planus, platypodia), a deformity of the foot characterized by the flattening of the longitudinal arch or, more rarely, the transversal arch as a result of weakness in the ligament-muscle apparatus. Flatfoot is either longitudinal or transversal, depending on the arch affected. A combination of these types is possible and can be further complicated by the presence of other foot deformities. With flatfoot, the entire sole of the foot touches the floor.

While congenital flatfoot is rare, there are several types of acquired flatfoot classified according to the cause. These are static, traumatic, and paralytic. Paralytic flatfoot, which occurs with poliomyelitis, is rare. Observed more frequently is traumatic flatfoot, which develops after a fracture of the ankle or the bones of the foot. Static flatfoot is the most common form and is caused by various strains on the feet, especially during the growth period. In adults, flatfoot often develops after the prolonged carrying of heavy objects, after continuous standing, as for example in surgeons and barbers, or after considerable weight gain. When there are bone fractures of a lower extremity, flatfoot often develops on the side opposite the fracture. In a number of cases, flatfoot is asymptomatic. In other cases, the legs tire when walking, and there are pains in the tibia muscles. Preventive measures include exercise and proper selection of footwear. Treatment consists in a set of special exercises for the muscles of the feet and tibia, massage, and inclusion of therapeutic insoles in footwear.


Fridland, M. O. Ortopediia, 5th ed. Moscow, 1954.
Kuslik, M. I. “Ploskostopie.” In Mnogotomnoe rukovodstvo po khirurgii, vol. 12. Moscow, 1960.
Volkov, M. V., and V. D. Dedova. Detskaia ortopediia. Moscow, 1972.
References in periodicals archive ?
A modified subtalararthroereisis implant for the correction of flexible flatfoot in children.
Correlation of Harris mats, physical exam, pictures, and radiographic measurements in adult flatfoot deformity.
The clinical diagnosis of flatfoot is based on the valgus position of the heel and the non-formation of a medial arch (1).
His Flatfoot virtually tells a fictitious story behind the finished play as we have it, since the character Plautus is continually shown to be thinking very hard and very fast to accommodate Crassus, and the result arrived at, allegedly by improvisation, spontaneous ideas, and reactions to Crassus's objections, is the equivalent of the Miles gloriosus by the historical playwright.
The foot progressively correction of the human subject's flatfoot, by adapting his shoes with prototyped orthesis having progressive dimensions.
The free admission evening of American and English folk and old-time songs and flatfoot dancing kicks off at the Somerville Arms, Leamington at 8.
The line-up of Keith Eardley, Bob Powell and Ian and Sue Hartland play guitar, mandolin, banjo, fiddle, dobro, harmonica, ukulele, concertina, washboard and spoons and even thrown in some impressive displays of traditional flatfoot dancing.
The Musicfest starts at 2pm in Newbold Comyn Park and includes performances by 18 local artists such as Leamington singer Anatasha, Warwickshire duo Branwen, Coventry singer-songwriter Malc Evans, accordion wizard Frank Court, singer and guitarist Karen Killeen and the multi-instrumental and flatfoot dance skills of Harbury duo The Harvesters.
BANJO hoedowns, gospel harmonies, classic coun-and a bit of flatfoot dancing thrown in - that's the heady mix in store when the Dustbowl String Band step on stage.