A patch for covering an aperture associated with a skull including a plastic composite body having either a planar or arcuate shape exhibits an extending edge profile which matches a profile associated with a reconditioned edge of the skull. A fastener extends through the edge profile for securing the body to the skull. The extending edge profile further includes a first portion and a second reduced portion separated by a shoulder, the skull exhibiting a corresponding outer skull edge portion, inner stepped skull portion and intermediate shoulder being configured to mate with the configuration of the extending edge profile and in order to achieve a generally flush appearance when seating the patch over the skull aperture. One or more screws fasten the edge profile of the body to the skull. This can further include a bone screw with undercut engaging portion extending through the extending edge profile and associated skull location.