Surface textures for three-dimensional porous structures for bone ingrowth and methods for producing

An orthopaedic prosthetic component, comprising:

• a base,
• a porous three-dimensional structure attached to the base and configured to permit bone in-growth, the porous three-dimensional structure including a plurality of struts that are elongate along respective directions of elongation that are angularly offset with respect to the base and extend away from the base to respective farthest projected ends, the farthest projected ends defining an outer surface boundary of the porous three-dimensional structure, and
• a plurality of engagement studs that each extends out relative to the base along a respective central axis, each of the engagement studs extending outwardly from the outer surface boundary of the porous three-dimensional structure, and each of the engagement studs having a respective body and a respective impaction head that extends from the body, wherein the impaction head comprises a triangular prism having first and second parallel triangular faces that are spaced from each other, such that a distalmost outer impact tip, configured to engage a patient's bone, extends from an apex of the first triangular face to an apex of the second triangular face,
• wherein the plurality of engagement studs includes a first number of engagement studs, each of the first number of engagement studs being positioned at a first rotational position about its respective central axis, and a second number of engagement studs, each of the second number of engagement studs being positioned at a second rotational position about its respective central axis, wherein the second rotational position is 90 degrees offset from the first rotational position, and
• wherein a distance is defined between the outer surface boundary and the outer impact tip, the distance being in a range of 0.03 millimeters and 1 millimeter.