FIG. 1 is a top, front, right perspective view of a facet fusion wedge showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a bottom, front, right perspective view thereof.

The ornamental design for a surgical implant used to fuse a facet joint.