| 主权项 |
1. An orthopaedic prosthesis comprising:
a first component comprising a solid metal portion and a porous metal portion, the solid metal portion including a first solid metal surface and a second solid metal surface spaced from the first solid metal surface, the solid metal portion having an internal wall extending from the second solid metal surface toward the first solid metal, the internal wall being tapered to have a minimum internal diameter furthest from the first solid metal surface and to define an internal chamfered chamber, the second solid metal surface having an opening at the junction of the internal wall and the second solid metal surface; the porous metal portion including a peg having a porous metal head and a porous metal shaft, the head of the peg having a first free end and a tapered wall extending from the junction of the head and the shaft toward the first free end, the peg having a maximum outer diameter at the first free end and a smaller outer diameter at the junction of the head and the shaft, at least a substantial part of the head of the peg being received within the chamfered chamber in the solid metal portion between the first solid metal surface and the second solid metal surface, a portion of the peg extending outward through the opening in the second solid metal surface; wherein the solid metal portion includes a plug that extends from the first solid metal surface to the head of the peg and covers the head of the peg; wherein a weld connects the plug to another part of the solid metal portion so that the first solid metal surface, weld and plug define a continuous solid metal surface; and wherein there is no metallurgical bonding between the peg and the second solid metal surface of the solid metal portion. |
