US 12,109,119 B2
Orthopaedic femoral component having controlled condylar curvature
John L. Williams, Fort Wayne, IN (US); Said T. Gomaa, Fort Wayne, IN (US); and John M. Armacost, Warsaw, IN (US)
Assigned to DePuy Ireland Unlimited Company, Ringaskiddy (IE)
Filed by DePuy Ireland Unlimited Company, Ringaskiddy (IE)
Filed on May 24, 2022, as Appl. No. 17/752,352.
Application 17/752,352 is a continuation of application No. 16/774,399, filed on Jan. 28, 2020, granted, now 11,337,823, issued on May 24, 2022.
Application 16/774,399 is a continuation of application No. 15/943,798, filed on Apr. 3, 2018, granted, now 10,543,098, issued on Jan. 28, 2020.
Application 15/943,798 is a continuation of application No. 14/983,079, filed on Dec. 29, 2015, granted, now 9,931,216, issued on Apr. 3, 2018.
Application 14/983,079 is a continuation of application No. 14/453,371, filed on Aug. 6, 2014, granted, now 9,220,601, issued on Dec. 29, 2015.
Application 14/453,371 is a continuation of application No. 12/165,579, filed on Jun. 30, 2008, granted, now 8,828,086, issued on Sep. 9, 2014.
Prior Publication US 2022/0280305 A1, Sep. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/38 (2006.01)
CPC A61F 2/3859 (2013.01) [A61F 2/38 (2013.01); A61F 2/3868 (2013.01); A61F 2/3886 (2013.01); A61F 2/389 (2013.01); A61F 2002/3863 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An orthopaedic knee prosthesis comprising:
a femoral component having a single condyle having a condyle surface curved in the sagittal plane; and
a tibial bearing having an upper surface having a single bearing surface configured to articulate with the condyle surface of the single condyle of the femoral component,
wherein the condyle surface (i) contacts the single bearing surface at a first contact point on the condyle surface at a first degree of flexion degrees, (ii) contacts the single bearing surface at a second contact point on the condyle surface at a second degree of flexion greater than the first degree of flexion and less than about 30 degrees, and (iii) contacts the single bearing surface at a third contact point on the condyle surface greater than the second degree of flexion and less than about 75 degrees of flexion,
wherein (i) the condyle surface in the sagittal plane has a first radius of curvature at the first contact point, a second radius of curvature at the second contact point, and a third radius of curvature at the third contact point and (ii) a curved surface section defined between the second contact point and the third contact point that is defined by a plurality of radii having different lengths such that the curved surface section has a non-constant radius of curvature.