A wheelchair is a chair
with fitted with wheels. The device comes in variations where it is may
be either manually propelled by the seated occupant turning the rear
wheels by hander or electrically propelled by motors. Often there are
handles behind the seat for someone else to do the pushing. Wheelchairs
are used by people for whom walking is difficult or impossible due to illness, injury, or disability. People who have difficulty sitting and walking often need to use a wheelbench.
A modern lightweight rigid-frame manual chair.