This cup (2) has an internal cavity (4), for an articulation member (14), and an external metal layer (10) consisting of a portion of spheroid. The external layer (10) comprises networks (20) of meshes (22) with nodes (24) and struts (25, 26). The struts (25, 26) comprise so-called tapered struts (26) which each have a tapered design. The tapered struts (26) are arranged such that the tapered shapes are positioned in a uniform manner.