US 10,376,371 B2
Stabilized knee prosthesis
Carlos E. Collazo, Old Greenwich, CT (US); and Damon J. Servidio, Towaco, NJ (US)
Assigned to Howmedica Osteonics Corp., Mahwah, NJ (US)
Filed by Howmedica Osteonics Corp., Mahwah, NJ (US)
Filed on Sep. 8, 2016, as Appl. No. 15/259,270.
Application 14/027,636 is a division of application No. 12/847,202, filed on Jul. 30, 2010, granted, now 8,545,571.
Application 15/259,270 is a continuation of application No. 14/027,636, filed on Sep. 16, 2013, granted, now 9,452,051.
Prior Publication US 2016/0374814 A1, Dec. 29, 2016
Int. Cl. A61F 2/38 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/38 (2013.01) [A61F 2/389 (2013.01); A61F 2/3836 (2013.01); A61F 2/3854 (2013.01); A61F 2/3859 (2013.01); A61F 2/3886 (2013.01); A61F 2002/30362 (2013.01); A61F 2002/30378 (2013.01); A61F 2220/0033 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of varying an angular constraint of a knee prosthesis comprising:
inserting a portion of a first stabilizing post coupled to a tibial baseplate within a housing of a femoral component, the first stabilizing post having a thickness and an outer surface with a protrusion extending outwards from the outer surface, the first stabilizing post movably interconnecting the femoral component to the tibial baseplate, the protrusion being configured to engage a wall of the housing during hyperextension of a knee, the tibial baseplate including a tibial insert having an articular surface configured to articulate with condylar surfaces of the femoral component,
wherein the first stabilizing post includes a support post at least partially positioned within the first stabilizing post;
allowing the femoral component to articulate with respect to the tibial baseplate, the femoral component having a first angular constraint relative to the tibial baseplate based on the thickness of the first stabilizing post;
exchanging the first stabilizing post for a second stabilizing post of a different thickness than the first stabilizing post without removing the tibial insert, wherein exchanging includes:
removing the first stabilizing post from the support post, and
coupling the second stabilizing post to the support post;
inserting a portion of the second stabilizing post within the housing of the femoral component; and
allowing the femoral component to articulate with respect to the tibial baseplate, the femoral component having a second angular constraint relative to the tibial baseplate based on the thickness of the second stabilizing post.