The ornamental design for a castshoe for a walking heel, as shown and described.
FIG. 1 is a front perspective view of the cast shoe for a walking heel of the invention in the closed position;
FIG. 2 is a front elevational view of the cast shoe for a walking heel of FIG. 1;
FIG. 3 is a rear elevational view of the cast shoe for a walking heel of FIG. 1;
FIG. 4 is a right side view of the cast shoe for a walking heel of FIG. 1;
FIG. 5 is a left side view of the cast shoe for a walking heel of FIG. 1;
FIG. 6 is a top view of the cast shoe for a walking heel of FIG. 1;
FIG. 7 is a bottom view of the cast shoe for a walking heel of FIG. 1; and,
FIG. 8 is another perspective view of the cast shoe for a walking heel of the invention, but showing the general environment of the invention with a patient's lower leg and cast about to be received in the shoe.
The broken lines in the drawings depict portions of the design and environmental features that form no part of the claimed design.