A knee scooter or knee walker is a two, three or four-wheeled alternative to crutches or a traditional walker as an ambulation aid. It is known by many other names, such as knee coaster, knee cruiser, knee caddy, orthopaedic scooter, or leg walker.
Over the years it has taken on many forms, from small-wheeled devices suitable for indoor use to larger sturdier units capable of use outside on grass or paved surfaces. Today’s version is usually a lightweight, foldable design that, with the knee flexed, supports the shin of the unusable limb. The opposite foot makes contact with the floor or ground, providing propulsion.
