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a condition in which one or more arches of the foot have flattened out; called also pes planus, pes valgus, platypodia, and tarsoptosis.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pes pla·'nus

a condition in which the longitudinal arch is broken down, the entire sole touching the ground.
Synonym(s): flatfoot, talipes planus
Farlex Partner Medical Dictionary © Farlex 2012


1. pl. flat·feet (-fēt′) A condition in which the arch of the foot is abnormally flattened down so that the entire sole makes contact with the ground.
2. pl. flat·foots
a. Informal A person with flat feet.
b. Slang A police officer.
intr.v. flat·footed, flat·footing, flat·foots
To walk in a flat-footed manner: "He flatfooted along, twirling his club" (James T. Farrell).
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

tal·i·pes pla·nus

(tal'i-pēz plā'nŭs)
A condition in which the longitudinal arch is broken down, the entire sole touching the ground.
Synonym(s): flatfoot, pes planus.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


Enlarge picture
Abnormal flatness of the sole and the arch of the foot. This condition may exist without causing symptoms or interfering with normal function of the foot. The inner longitudinal and anterior transverse metatarsal arches may be depressed. This condition may be acute, subacute, or chronic. Synonym: pes planus; splayfoot See: illustration

spasmodic flatfoot

Flatfoot in which the foot is held everted by spasmodic contraction of the peroneal muscle.
Medical Dictionary, © 2009 Farlex and Partners

Patient discussion about flatfoot

Q. Can flat feet be repaired by surgery? I have flat feet and I’m looking for all sorts of treatments for it- I heard there is a surgery for it- is it helpful?

A. As far as I know- they don’t treat flat feet that are asymptomatic. So first of all check if it bothers you. secondly there are 2 kinds of flat feet- rigid and flexible. There are different and treated differently. Not always a surgery (which is very painful and costly) is needed– I went to a Rolf method therapist by the advice of my orthopedic and it’s much better now. Ask an orthopedic.

Q. I think my son has flat foot, how to tell for sure? I didn't notice it before, he is 3 years old now and all shoes hurt him. Does it mean he has flat foot? what else can it be?

A. Pes planus (flat foot) is not a rare condition in toddlers, and may resolves spontaneously as the child grows. It is diagnosed clinically, i.e. by a doctor such as pediatrician or pediatric orthopedic surgeon, and radiographs are not universally indicated

More discussions about flatfoot
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References in periodicals archive ?
Deland, "Adult-acquired flatfoot deformity," The Journal of the American Academy of Orthopaedic Surgeons, vol.
With each specimen, texts conditions were conducted in six conditions: the intact foot, the created flatfoot, and sequential LCL (2, 3, 4, and 5 mm) with cuboid osteotomy.
Some authors found relationship between wearing shoes at an early age and flatfoot. Genetic factors and age determine the shape of the foot's arch (6).
Therefore Plautus makes up a play over the course of his conversations with Crassus shown in Flatfoot: whenever Crassus reappears on stage and enquires after the commissioned play, Plautus presents him with another scene, made up on the spot and enacted by him (partly with the help of his wife Cleostrata) to convince Crassus of the new play's dramatic effectiveness.
(13,15,21,22) Classification Stages Description Stage I The patient has pain and swelling along the tendon, is able to perform single heel raises, flatfoot deformity is minimal, and the subtalar joint is mobile.
The foot progressively correction of the human subject's flatfoot, by adapting his shoes with prototyped orthesis having progressive dimensions.
Unlike the pied plat of French, however, the flatfoot of American English means a police officer and refers not to stealth, but rather to the fallen arches of one who walks a beat.
The Dallas' Texas Scottish Rite Hospital Flatfoot Clinic was the site of the study.