A multi-layered prosthetic element comprises a central body (1; 1′) of a substantially truncated conical shape and having a through axial cavity (2; 2′) open at both ends which gives the central body (1; 1′) a ring-shaped cross-section. The central body (1, 1′) comprises an outer portion (110; 110′), made of trabecular metal material, an inner portion (130; 130′), made of trabecular metal material, and an intermediate portion (120; 120′) made of metal material without significant porosity. The outer portion (110; 110′) and the inner portion (130; 130′) are integrally connected to the intermediate portion (120; 120′). The intermediate portion (120; 120′) is configured to mechanically resist to stresses transmitted to the inner portion (130; 130′) on one side and to the outer portion (110; 110′) on the other side.