The standard walker does not have wheels and is designed mostly for stability in patients that need to bear a substantial amount of weight on the walker. These walkers fold easily for more convenient storage and transport. The design of the standard walker requires that it be lifted and moved forward with each step and therefore requires a bit more energy to operate.
The two-wheeled walker has two front wheels and two back sliders. These too are used by patients with gait instability, but who do not need as much weight bearing assistance as the standard walker. These ambulation devices allow for a more normal walking pattern. The walker does not need to be lifted during walking and the two front wheels provide for a more enhanced mobility, especially on changing terrain and surfaces. These walkers also fold easily for convenient storage and transport.
The knee walker is a mobility device used as an alternative to crutches and is considered to be safer, more comfortable, less energy requiring, and more maneuverable for those recovering from foot or lower leg injury or surgery.
As with any gait assist device, there tends to be an inverse relationship between stability and mobility. The greater the mobility the less the stability, and the greater the stability the less the mobility.
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