A shoulder prosthesis system, comprising: A superior-inferior component, wherein the superior-inferior component comprises a body comprising a first bore, wherein the first bore extends at least partially through the body, wherein the superior-inferior component comprises a first and second superior-inferior component arms (106, 108), an anterior-posterior component, wherein the anterior-posterior component comprises a wall defining an aperture, a protruded portion extending distally from the wall, wherein the aperture comprises a central axis and at least partially extends into the protruded portion, wherein the superior-inferior component engages the anterior-posterior component, wherein the first bore of the superior-inferior component is shaped to receive a portion of the protruded portion of the anterior-posterior component; at least one anchor; and an articulating component, wherein the articulating component comprises an articulating surface, a second surface opposite the articulating surface, and a post, wherein the post extends from the second surface; wherein the articulating component engages the anterior-posterior component, wherein when the articulating component engages the anterior-posterior component, at least a portion of the post is contained within the aperture;; wherein the first and second superior-inferior component arms (106, 108) are integral to the body and extend from the body and wherein the superior-inferior and anterior-posterior components (100, 200) form a bone-engaging cruciate structure when they are engaged; characterized in that portions of the arms (106, 108) extend proximally from the body giving the superior-inferior component a V or U-shaped configuration, and the extension of the arms (106, 108) proximally is collinear, substantially parallel and substantially the same length. A superior-inferior component, wherein the superior-inferior component comprises a body comprising a first bore, wherein the first bore extends at least partially through the body, wherein the superior-inferior component comprises a first and second superior-inferior component arms (106, 108), an anterior-posterior component, wherein the anterior-posterior component comprises a wall defining an aperture, a protruded portion extending distally from the wall, wherein the aperture comprises a central axis and at least partially extends into the protruded portion, wherein the superior-inferior component engages the anterior-posterior component, wherein the first bore of the superior-inferior component is shaped to receive a portion of the protruded portion of the anterior-posterior component; at least one anchor; and an articulating component, wherein the articulating component comprises an articulating surface, a second surface opposite the articulating surface, and a post, wherein the post extends from the second surface; wherein the articulating component engages the anterior-posterior component, wherein when the articulating component engages the anterior-posterior component, at least a portion of the post is contained within the aperture;; wherein the first and second superior-inferior component arms (106, 108) are integral to the body and extend from the body and wherein the superior-inferior and anterior-posterior components (100, 200) form a bone-engaging cruciate structure when they are engaged; characterized in that portions of the arms (106, 108) extend proximally from the body giving the superior-inferior component a V or U-shaped configuration, and the extension of the arms (106, 108) proximally is collinear, substantially parallel and substantially the same length.