US 12,226,317 B2
Metal-backed tibial component of an orthopaedic knee prosthesis and associated method of making the same
Anthony J. Webb, Fort Wayne, IN (US); Nicholas A. Miltner, Fort Wayne, IN (US); Evan P. O'Mahony, Cork (IE); Fionnan A. Mcnamara, Rathvilly (IE); Edward P. Kavanagh, Mallow (IE); and Dustin N. Albert, Warsaw, IN (US)
Assigned to DEPUY IRELAND UNLIMITED COMPANY, Ringaskiddy (IE)
Filed by DEPUY IRELAND UNLIMITED COMPANY, Ringaskiddy (IE)
Filed on Apr. 26, 2021, as Appl. No. 17/240,185.
Application 17/240,185 is a continuation in part of application No. 16/717,077, filed on Dec. 17, 2019, granted, now 11,357,635.
Prior Publication US 2021/0244545 A1, Aug. 12, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/38 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/389 (2013.01) [A61F 2002/30011 (2013.01); A61F 2002/3006 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An orthopaedic implant, comprising:
a tibial component configured to be implanted on a surgically-prepared proximal end of a patient's tibia, the tibial component comprising:
a solid-metal base comprising (i) a superior base surface having a number of pockets formed therein with each of the pockets having an undercut formed therein, and (ii) an inferior base surface having a number of pegs extending outwardly therefrom,
a porous-metal coating disposed on the inferior base surface and the pegs, and
a polymer bearing molded to the superior base surface of the solid-metal base, the polymer bearing having a tibial bearing surface configured to articulate with a pair of femoral condyles of a femoral component,
wherein (i) the solid-metal base further comprises a perimeter sidewall extending between the superior base surface and the inferior base surface, (ii) the perimeter sidewall has a number of pockets formed therein, and (iii) each of the pockets formed in the perimeter sidewall has the porous-metal coating disposed therein.