The process for the realization of a device for prostheses comprising: - at least a bone integration portion (2) having an osseointegration surface (3) and a fixing surface (4), and adapted to be implanted in a skeletal structure - at least a contact portion (6) associated with the fixing surface (4) and having a contact surface (6a) adapted to engage with a joint element for the reconstruction of the joint of a patient with the integration portion (2) that comprises anchoring means (7) adapted to retain said contact portion (6) for their irreversible fixing comprises: - a first stage of realization of a bone integration portion (2) of a device (1) for prostheses having an osseointegration surface (3) and a fixing surface (4) - a second stage of realization of a contact portion (6) of the device (1) associated with said fixing surface (4) in an integral manner where the second stage is subsequent to the first stage.
