The present invention relates to a prosthesis (200) comprising: -at least one flexible mesh (1) delimited by a peripheral exterior edge (1a), -at least two tongues (5) extending from one face of the mesh, and -at least one member for reinforcing said mesh, characterized in that said reinforcing member takes the form of a frame (2) fastened to said mesh and substantially adopting the shape of said peripheral exterior edge of the mesh, said frame being set back from said peripheral exterior edge and being provided with two hinge points (3a, 3b), the line passing through said two hinge points also passing through the centre (1b) of the mesh and thus forming a line M for folding the mesh in two.
