A surgical stapling apparatus (10) includes a housing (20), an end effector (100), fasteners, and one or more surgical buttresses (130). The end effector is secured to the housing and has first and second jaw assemblies. The first jaw assembly (110) defines slots and the second jaw assembly (120) defines pockets. One or both of the first and second jaw assemblies define recesses (115). The fasteners are disposed in the slots of the first jaw assembly and are formed by the pockets of the second jaw assembly. The one or more surgical buttresses have a body (132) that includes plugs (134) that are integrally formed with the body for insertion into the recesses to secure the surgical buttress(es) to one or both of the first and second jaw assemblies. The body substantially overlies at least some of the slots of the first jaw assembly and/or at least some of the pockets of the second jaw assembly.
