From TheBestLinks.com
de:Rollstuhl
es:silla de ruedas
fr:Fauteuil roulant
ja:車椅子
sv:Rullstol
A wheelchair is a device used for mobility by people for whom walking is difficult or impossible, due to illness or disability.
It typically consists of a seat supported on two large wheels on an axle attached towards the back of the seat and two small wheels near the feet, though there are often small additional features to prevent toppling or to assist mounting curbs. The person moves by pushing with his/her hands circular bars on the outside of the large wheels with a diameter that is slightly less than that of the wheels, or by actuating motors, usually with a joystick.
Experiments have also been made with unusual variant wheels, like the omniwheel or the mecanum wheel. These allow more directional movement options. Makes include Storm, Twister, Harrier and Spectra.
Disabled athletes use streamlined sport wheelchairs for sports that require speed and agility.
Powerchairs are extremely maneuverable because they're controlled with a joystick device you can operate with as little as one finger. A powerchair is ideal for navigating tight spaces indoors and can often turn 360 degrees in the same spot. Powerchairs can be easily customized to accommodate the rider's specific situation. Powerchairs can be used as part of adapted sports such as Wheelchair Soccer.
Adapting the built environment to make it more accessible to wheelchair users is one of the key campaigns of disability rights movements. For example, the construction of ultra low floor trams and buses is being encouraged whereas the use of paternosters in public buildings without any alternative method of transportation has been criticized.
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