An implant to repair a hole in a muscle wall includes a flat mesh with a central resilient core which deforms to place the core in a hole in a muscle wall and then resiliently expands when released to urge against the perimeter of the hole, dynamically “riding” in the hole as the hole perimeter expands and contracts. Straps on the mesh are tunneled through tissue in the muscle wall containing the hole to hold the mesh with core in place.
