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Motion facilitating tibial components for a knee prosthesis

  • US 10,413,415 B2
  • Filed: 09/13/2017
  • Issued: 09/17/2019
  • Est. Priority Date: 09/10/2010
  • Status: Active Grant
First Claim
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1. A tibial prosthesis comprising:

  • a beating component comprising;

    a bearing distal surface;

    an opposing bearing proximal surface defining a lateral articular surface and a medial articular surface; and

    a bearing peripheral wall disposed between the bearing distal and proximal surfaces; and

    a baseplate configured to couple to the bearing component, the baseplate comprising;

    a baseplate distal surface configured for contacting a bone surface;

    an opposing baseplate proximal surface having a medial compartment and a lateral compartment, the bearing component mountable to the tibial baseplate; and

    a baseplate peripheral wall disposed between the baseplate proximal and distal surfaces, the baseplate peripheral wall including a baseplate medial-posterior wall extending distally and posteriorly toward the baseplate distal surface;

    wherein the baseplate medial-posterior wall extends in a posterior direction beyond a posterior medial edge of the bearing component such that a posterior most portion of the baseplate medial-posterior wall does not interface with the beating component and is exposed when the baseplate is coupled to the bearing component, wherein the bearing peripheral wall includes a bearing medial-posterior chamfer extending distally and posteriorly from the medial articular surface toward the bearing distal surface.

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