Hybrid fixation features for three-dimensional porous structures for bone ingrowth and methods for producing

1. An orthopaedic prosthetic component, comprising:

a base; and

a fixation peg extending away from the base to a distal tip, the fixation peg including a porous three-dimensional structure configured to permit bone in-growth, the porous three-dimensional structure having an outer surface boundary,

wherein the fixation peg includes a plurality of plates attached to the porous three-dimensional structure at the outer surface boundary, each plate including a tapered body having an outer wall that faces away from the porous three-dimensional structure and is devoid of any openings, and

wherein the tapered body of each plate extends longitudinally along the porous three-dimensional structure, the tapered body of each plate extends from a proximal end to a distal end, and the tapered body of each plate has a first width at the proximal end and a second width greater than the first width between the proximal end and the distal end.

2. The orthopaedic prosthetic component of claim 1 , wherein the outer wall of each plate includes a concave surface that defines a tapered channel.

3. The orthopaedic prosthetic component of claim 1 , wherein the plurality of plates are arranged circumferentially on the porous three-dimensional structure.

4. The orthopaedic prosthetic component of claim 3 , wherein adjacent plates of the plurality of plates are spaced apart circumferentially from each other on the porous three-dimensional structure.

5. The orthopaedic prosthetic component of claim 1 , wherein the plurality of plates are positioned between the distal tip of the fixation peg and the base.

6. The orthopaedic prosthetic component of claim 1 , wherein the base includes a tibial platform configured to receive a tibial insert.

7. The orthopaedic prosthetic component of claim 6 , further comprising an elongated stem that extends from the tibial platform to a distal tip, the elongated stem being configured to be implanted in a surgically-prepared proximal end of a patient's tibia.

8. The orthopaedic prosthetic component of claim 7 , further comprising a porous three-dimensional layer attached to a distal surface of the tibial platform,

wherein the elongated stem extends outwardly from the three-dimensional layer, and the fixation peg extends outwardly from the porous three-dimensional layer.

9. The orthopaedic prosthetic component of claim 1 , wherein:

the tapered body of each plate extends from a proximal end to a distal end, and

the tapered body of each plate has a first thickness at the distal end and a second thickness greater than the first thickness between the proximal end and the distal end.

10. The orthopaedic prosthetic component of claim 9 , wherein each plate extends circumferentially around the porous three-dimensional structure.

11. The orthopaedic prosthetic component of claim 10 , wherein adjacent plates of the plurality of plates are spaced apart from each other on the porous three-dimensional structure in a proximal-distal direction.

12. The orthopaedic prosthetic component of claim 10 , wherein the distal tip of the fixation peg includes a longitudinal slot.

13. An orthopaedic prosthetic component, comprising:

a tibial platform configured to receive a tibial insert,

a porous three-dimensional structure coupled to the tibial platform, the porous three-dimensional structure being configured to permit bone in-growth, and

an elongated stem extending away from the tibial platform to a distal tip,

wherein the porous three-dimensional structure includes a layer coupled to the tibial platform and a plurality of fixation pegs extending from the layer, each fixation peg including a portion of the porous three-dimensional structure that has an outer surface boundary,

wherein a plurality of plates are attached at the outer surface boundary of each fixation peg, each plate including a tapered body that 1) extends longitudinally along the porous three-dimensional structure, and 2) has an outer wall that includes a concave surface that defines a tapered channel, wherein the outer wall is devoid of any openings, and

wherein the tapered body of each plate extends longitudinally along the porous three-dimensional structure.

14. The orthopaedic prosthetic component of claim 13 , wherein adjacent plates of the plurality of plates are spaced apart circumferentially from each other on each peg.

15. The orthopaedic prosthetic component of claim 13 , wherein adjacent plates of the plurality of plates are spaced apart from each other on the porous three-dimensional structure in a proximal-distal direction.