The ornamental design for a foot and anklestretcher, as shown and described.
FIG. 1 is a front perspective view of a foot and ankle stretcher showing my new design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a right side elevation view thereof, the left side view being a mirror image of the right side view;
FIG. 4 is a right side elevation view thereof shown in an alternate and second setting position, the left side view being a mirror image of the right side view;
FIG. 5 is a right side elevation view thereof shown in an alternate and third setting position, the left side view being a mirror image of the right side view; and,
FIG. 6 is a front elevation view thereof shown in an alternate and folded position.