Single tube crutch

FIG. 1 is a first perspective view of a single tube crutch in a packaged configuration showing our new design;

FIG. 2 is a second perspective view of the packaged configuration;

FIG. 3 is a first perspective view of the single tube crutch;

FIG. 4 is a second perspective view thereof;

FIG. 5 is a right elevation view thereof;

FIG. 6 is a left elevation view thereof;

FIG. 7 is a rear elevation view thereof;

FIG. 8 is a front elevation view thereof;

FIG. 9 is a top plan view thereof; and,

FIG. 10 is a bottom plan view thereof.

The broken lines represent environment that forms no part of the claimed design.