FIG. 1 is a front perspective view of a tibial prosthesis showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevation thereof;

FIG. 4 is a side elevation as seen from the side opposite FIG. 3;

FIG. 5 is a front elevation thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a bottom plan view of a second modified embodiment of the tibial prosthesis illustrated in FIGS. 1 and 6;

FIG. 8 is a front perspective view of a third modified embodiment of the tibial prosthesis illustrated in FIG. 1;

FIG. 9 is a front perspective of a fourth modified embodiment of the tibial prosthesis illustrated in FIG. 1; and

FIG. 10 is a front perspective view of a fifth modified embodiment of the tibial prosthesis illustrated in FIG. 1.