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Foot
A human foot - Enlarge to view legend
Latin pes
Artery dorsalis pedis, medial plantar, lateral plantar
Nerve medial plantar, lateral plantar, deep fibular, superficial fibular
MeSH Foot

The foot is a biological structure found in many animals that is used for locomotion. In many animals with feet, the foot is a separate organ at the terminal part of the leg made up of one or more segments or bones, generally including claws or nails.

General forms of the footEdit

File:HoofRearHooves.jpg

In land animals, insects and vertebrates have complex foot organs. The insect foot is known as a tarsus, and is distal to the tibia. In primitive insects, the tarsus was a single segment, but in more highly evolved insects the tarsus is composed of up to five segments, generally bearing claws as well.

The feet of land vertebrates are characterized as either plantigrade, digitigrade, or unguligrade. In plantigrade animals, such as frogs or bears, the bottom of the entire foot supports the weight of the animal. In digitigrade animals, such as wolves or birds, the toes bear the animal's weight, while the upper regions of the foot, the ankle and wrist, remain elevated. Finally, in unguligrade animals, such as cows or horses, even the toes are elevated, the animal standing only atop its nails, which have evolved to bear weight and are called hooves.

The human footEdit

AnatomyEdit

The human foot is of the plantigrade form. The major bones in the human foot are:

  • Phalanges: The bones in the toes are called phalanges.
  • Metatarsals: The bones in the middle of the foot are called metatarsal bones.
  • Cuneiforms: There are three bones in the middle of the foot, towards the centre of the body called cuneiforms.
  • Cuboid: The bone sitting adjacent to the cuneiforms on the outside of the foot is called the cuboid.
  • Navicular: This bone sits behind the cuneiforms.
  • Talus: Also called the ankle bone, the talus sits directly behind the navicular.
  • Calcaneus: Also called the heel bone, the calcaneus sits under the talus and behind the cuboid.

The foot also contains sesamoid bones in distal portion of the first metatarsal bone.

See also: Arches of the foot

In cultureEdit

In different cultures across the world, feet are perceived and treated differently.

  • In China, between the periods of the 10th and 20th century the practice of female foot binding was used to stop the growth of feet, resulting in an aesthetically preferred though deformed foot.
  • Within several Christian denominations, foot washing is a religious ritual possibly originating in the hospitality customs of the Levant.
  • Foot fetishism is a sexual interest and preoccupation with feet and hosiery. Playing footsie is also a term dealing with rubbing each other's feet, and can have sexual connotations, while a foot job is a sex act involving the feet.

Footwear customsEdit

File:Soles2.jpg

Customs about footwear while indoors vary significantly from place to place and usually depend on climate, weather, and other factors:

  • It is customary to remove one's footwear when entering a home:
  • In some cultures, bare feet may be considered unsightly or offensive. In Arab countries and in Thailand, it is considered extremely offensive to show someone the sole of your foot, although the practice of going barefoot is common, due to various reasons including hot climate and tradition.
  • In many religious subgroups of Uzbekistan, touching another's foot is a sign of affection. However, more conservative families consider this to be an act of promiscuity.
  • Regardless of covering, according to Thai normshttp://startingstrengthmirror.wikia.com/wiki/Culture_of_Thailand#Customs feet are the least respected parts of the body; they should not be in a higher position than someone's head and should not face someone or an image of Buddha.
  • The feet are one of the most common places to be tickled on the human body. The soles generally tend to be sensitive to tickling.

Customary measurementEdit

One way to measure short distances on the ground is by placing one foot directly in front of the other; this led to the adoption of the foot as a unit of length, even though not all human feet correspond to this measure.

MythsEdit

It is a myth that the Imperial "foot" (304.8 mm) is about the length of the average European male foot. The average today is less than 270 mm and 90% of the population is within 20 mm of that. Very few men today have feet that are a "foot" long: most are more than 35 mm shorter. In the past, the average length would have been less. Even the overall length of most shoes remains well short of one "foot". Tradition has it that the Imperial foot was based upon the size of Hercules' foot.

Medical aspectsEdit

Due to their position and function, feet are exposed to a variety of potential infections and injuries, including athlete's foot, bunions, ingrown toenails, Morton's neuroma, plantar fasciitis, plantar warts and stress fractures. In addition, there are several genetic conditions that can affect the shape and function of the feet, including a club foot or flat feet.

On the evolutionary ladder, humans are the first mammals to walk completely upright. Thus the entire weight of the body is distributed over two feet, instead of four. This leaves humans more vulnerable to medical problems that are caused by poor leg and foot alignments. Also, the wearing of shoes, sneakers and boots can impede proper alignment and movement within the ankle and foot. For example, high heels are known to throw off the natural weight balance (this can also affect the lower back).

A doctor who specializes in the treatment of the feet practices podiatry and is called a podiatrist. A pedorthist specializes in the use and modification of footwear to treat problems related to the lower limbs.

External linksEdit

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af:Voet

an:Piet ast:Pie (anatomía) ca:Peu cy:Troed de:Fuß es:Pie (anatomía) eo:Piedo fr:Pied (anatomie) ko:발 it:Piede (anatomia) he:כף רגל la:Pes lt:Pėda ml:പാദം ms:Kaki nl:Voet (anatomie) ja:足 no:Fot (kroppsdel) nn:Fot oc:Pè nds:Foot pl:Stopa (anatomia) pt:Pé qu:Chaki ru:Стопа (анатомия) simple:Foot fi:Jalkaterä sv:Fot tr:Ayak (organ) uk:Стопа (анатомія) ur:فٹ yi:פוס zh:脚

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