An implantable prosthesis is provided for repairing or augmenting anatomical weaknesses or defects, and is particularly suitable for the repair of soft tissue and muscle wall openings. The prosthesis may include a layer of fabric that is constructed and arranged to allow tissue ingrowth and is susceptible to erosion into and the formation of adhesions with tissue and organs. The prosthesis is configured to inhibit edge erosion of the prosthesis into surrounding tissue and organs. The prosthesis may include an erosion resistant edge to buffer an edge of the fabric from the adjacent tissue or organs. The erosion resistant edge may be provided along an opening that is adapted to receive a tube-like structure, such as the esophagus.