Patent ID: 8690951

Claim:
An artificial joint assembly comprising: an artificial joint component having a non-circular tapered protrusion extending therefrom, the non-circular tapered protrusion defining a protrusion axis and having, tapering along a total length of the non-circular tapered protrusion, one single continuous taper, the joint component comprising one of: i) a shell component adapted for an anatomical configuration of the joint assembly, and ii) a ball component adapted for an inverse configuration of the joint assembly; and a base platform having a hollow pin projecting from a convex side of the base platform including an internal wall defining a tapered internal cavity, the tapered internal cavity sized to receive the protrusion of the artificial joint component, wherein the base platform includes at least one screw mount, the at least one screw mount defining a passage extending from a concave side of the base platform to the convex side of the base platform, the at least one screw mount having an anchoring collar that projects from the convex side of the base platform, wherein a central axis of the anchoring collar coincides with a central axis of the at least one screw mount, the base platform adapted to be anchored to a bone by said hollow pin and the anchoring collar, the tapered protrusion of the artificial joint component cooperating with the tapered internal cavity of the hollow pin to axially fix the artificial joint component to the base platform with respect to the protrusion axis by taper locking, and at least a portion of the internal wall defining the cavity of the hollow pin having a non-circular inner cross-section, so that the internal wall defining the cavity of the hollow pin cooperates with the non-circular tapered protrusion of the artificial joint component to rotatably fix said artificial joint component to the base platform when the non-circular tapered protrusion is received in the internal cavity of the hollow pin, wherein the anchoring collar is positioned along a long axis of the cavity of the hollow pin, the long axis disposed along a common plane of the base platform.