(57) This invention relates to elbow crutches and provides a crutch to enable a patient
with leg disability to raise himself from a sitting position to a standing position.
Basically the invention consists in an elbow crutch, the length of which is adjustable
under the control of a manually operable lever. In particular, the crutch comprises
two telescopically arranged tubular members and a spring urging one tubular member
outwardly with respect to the other. A rock and pawl are provided to prevent relative
movement between the two members, and the pawl is controlled by the manually operable
lever. Normally a patient will use a pair of crutches in accordance with the invention,
and will initially operate the lever of each crutch to reduce the length of the crutch
to the minimum by pressing the crutch on the floor. He can then raise himself by supporting
his weight on the two crutches alternately and operating the control lever of the
crutch which is not supporting his weight to allow that crutch to extend.
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