A heel is the projection at the back of a shoe which rests below the heel bone. The shoe heel is used to improve the balance of the shoe or for decorative purposes and that . Sometimes raised, the high heel is common to a form of shoe often worn by women, but sometimes by men too. See also stiletto heel.
High heels are not a modern invention. Rather, they enjoy a rich and varied history, for both men as well as women. Controversy exists over when high heels were first invented, but the consensus is that heels were worn by both men and women throughout the world for many centuries and for a variety of reasons.
Although high heeled shoes are depicted in ancient Egyptian murals on tombs and temples, the earliest recorded instance of men or women wearing an elevated shoe comes from Hellenic times. It is suspected that the wear of an elevated sole, or heel, occurred centuries before, but there is little direct evidence to support this, although there is indeed much indirect evidence that lends credence to the use of high heels by both men and women for many reasons.
In human anatomy, the heel is the prominence at the posterior end of the foot. It is based on the projection of one bone, the calcaneus or heel bone, behind the articulation of the bones of the lower leg.
The compressive forces applied to the foot are distributed along five rays, three medial (side of big toe) and two lateral (side of little toe). The lateral rays stretch over the cuboid bone to the heel bone and the medial rays over the three cuneiform bones and the navicular bone to the ankle bone. Because the ankle bone is placed over the heel bone, these rays are adjacent near the toes but overriding near the heel, and together they form the arches of the foot that are optimized to distributed compressive forces across an uneven terrain. In this context the heel thus forms the posterior point of support that together with the balls of the large and little toes bear the brunt of the loads.
To distribute the compressive forces exerted on the heel during gait, and especially the stance phase when the heel contacts the ground, the sole of the foot is covered by a layer of subcutaneous connective tissue up to 2 cm thick (under the heel). This tissue has a system of pressure chambers that both acts as a shock absorber and stabilises the sole. Each of these chambers contains fibrofatty tissue covered by a layer of tough connective tissue made of collagen fibers. These septa ("walls") are firmly attached both to the plantar aponeurosis above and the sole's skin below. The sole of the foot is one of the most highly vascularized regions of the body surface, and the dense system of blood vessels further stabilize the septa.
A shoe is an item of footwear intended to protect and comfort the human foot while doing various activities. Shoes are also used as an item of decoration. The design of shoes has varied enormously through time and from culture to culture, with appearance originally being tied to function. Additionally fashion has often dictated many design elements, such as whether shoes have very high heels or flat ones. Contemporary footwear varies widely in style, complexity and cost. Basic sandals may consist of only a thin sole and simple strap. High fashion shoes may be made of very expensive materials in complex construction and sell for thousands of dollars a pair. Other shoes are for very specific purposes, such as boots specially designed for mountaineering or skiing.
Shoes have traditionally been made from leather, wood or canvas, but are increasingly made from rubber, plastics, and other petrochemical-derived materials.
Until recent years,[when?] shoes were not worn by most of the world's population — largely because they could not afford them. Only with the advent of mass production, making shoes available very cheaply, has shoe-wearing become predominant.