| 摘要 |
The invention provides a forearm type of crutch comprising an operatively upright staff having a ground engaging foot at one end and a transverse handle and forearm support assembly at the operatively upper end, and wherein the angle of inclination of the forearm support assembly to the staff is adjustable, wherein the angle of inclination of the forearm support assembly relative to the staff is adjustable by means of a pair of co-operating positioning portions, one being stationary relative to the staff and the other being stationary relative to the forearm support assembly and wherein the positioning portions have complementarily co-operating zones that are engagable in different angular positions of the forearm support assembly and staff to provide a desired angle of inclination of the forearm support assembly relative to the staff and wherein releasable clamping means operatively hold the positioning portions in a selected engaged position for use.
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