Tibial insert and method for implanting the same

• US 8,114,165 B2
• Filed: 06/22/2006
• Issued: 02/14/2012
• Est. Priority Date: 06/22/2006
• Status: Expired due to Fees

• Current Assignee: Depuy Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Products Incorporated (Johnson & Johnson)
• Inventors: Rhodes, James Matthew, Lee, Jordan Soonja
• Primary Examiner(s): Isabella, David
• Assistant Examiner(s): LEVINE, JOSHUA H
• Application Number:
  US11/425,936
• Publication Number:
  US 20070299531A1
• Time in Patent Office: 2,063 Days
• Field of Search: 623/14.12, 623/19.11, 623/19.12, 623/20.34, 623/20.35, 623/20.36, 623/21.16, 623/22.32, 623/22.35, 623/22.38
• US Class Current: 623/20.32
• CPC Class Codes: A61F 2/3094 Designing or manufacturing processes
• CPC Class Codes: A61F 2/389 Tibial components A61F2/3868 takes precedence
• CPC Class Codes: A61F 2002/3895 unicompartimental

Abstract

A tibial insert includes a platform defining an upper bearing surface and first and second keels extending downwardly from the platform. Each of the first and second keels includes an angled anterior face. A surgical method for knee arthroplasty is also disclosed.

Claims

1. A tibial insert comprising:

a platform including (i) an upper bearing surface, (ii) a lower surface opposite the upper bearing surface, (iii) a curved outboard surface extending between the upper bearing surface and the lower surface, and (iv) a generally straight inboard surface opposite the outboard surface and extending between the upper bearing surface and the lower surface,

a first keel extending downwardly from the lower surface of the platform such that a longitudinal axis of the first keel is generally parallel with the generally straight inboard surface of the platform, and

a second keel extending downwardly from the lower surface of the platform such that a longitudinal axis of the second keel is generally parallel with the longitudinal axis of the first keel.

2. The tibial insert of claim 1, wherein an anterior face of the first keel and an anterior face of the second keel are each angled.

3. The tibial insert of claim 1, wherein a posterior face of each of the first and second keels is generally vertical.

4. A tibial insert comprising:

a platform including (i) an upper bearing surface, (ii) a lower surface opposite the upper bearing surface, and (iii) a generally straight inboard surface extending between the upper bearing surface and the lower surface,

a first keel extending downwardly from the lower surface of the platform such that a longitudinal axis of the first keel is generally parallel with the generally straight inboard surface of the platform; and

including a first angled anterior face, the first angled anterior face and the lower surface of the platform defining an obtuse angle,

a second keel extending downwardly from the platform such that a longitudinal axis of the second keel is generally parallel with the longitudinal axis of the first keel and including a second angled anterior face, wherein the second angled anterior face and the lower surface of the platform define an obtuse angle, and the second angled anterior face of the second keel is positioned posteriorly from an anterior face of the first keel.

5. The tibial insert of claim 4, wherein the second keel is generally positioned within a posterior portion of the tibial insert.