Abstract: The invention concerns an implant comprising: a planar part made of biocompatible material, knitted with monofilament or multifilament yarns with an armour providing it with run-resistant and macroporous properties; and a hollow protrusion made of biocompatible material, projecting from a surface of said planar part, said protrusion having a longitudinal axis perpendicular to the plane of the planar part, an orifice located in said plan and a flat base parallel to the planar part. The invention is characterized in that the protrusion is shaped like a cylindrical cup, and the base of said protrusion is spaced apart from said opening by a distance whereof the value is not more than the value of the diameter of the protrusion.