Abstract: A crutch provides ease of adjustment, transport and storage. In a described embodiment, the crutch includes two length adjustment mechanisms. Each of the mechanisms includes an inner tube slidingly received within an outer tube, and a spring-biased protrusion carried on the inner tube and inserted into one of a series of holes formed through the outer tube, thereby securing the inner tube relative to the outer tube. An armpit support is attached to one of the inner tubes, a foot is attached to the other inner tube, and a handle is attached to one of the outer tubes.