A process for coupling a polymer component to a metal component forming part of a biomedical joint prosthesis includes the steps of providing the polymer component, providing the metal component having a surface with the same geometry/curvature of the surface of the polymer component to be coated, putting in contact the polymer component with the metal component, and heating only the metal component to a process temperature equal to or higher than the melting temperature of the polymer component to achieve a local softening or melting of the polymer component at the contact surface between the two components.
