Orthopedic implant with angled pegs
First Claim
Patent Images
1. A tibial implant comprising:
- a plate having a generally planar bone contacting surface bisected by an anterior-posterior plane generally parallel to a sagittal plane of the body and four pegs extending outwardly from said bone contacting surface, each of said pegs having a longitudinal axis angled between 30 and 45°
with respect to said planar bone contacting surface when measured in first, second, third and fourth planes perpendicular to the plane of the bone contacting surface, each plane containing a respective single peg longitudinal axis and the first, second, third and fourth planes of each peg angled at an angle of 5°
to 90°
with respect to said anterior-posterior plane with 90°
being perpendicular to the anterior-posterior plane wherein the peg longitudinal axis of each peg extend in parallel.
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Abstract
An orthopedic implant, such as a tibial tray, includes a body having a bone contacting surface with at least one and preferably two pegs extending from the bone contacting surface. Each of the pegs has a longitudinal axis angled with respect to the bone contacting surface and also angled in at least one direction consisting of a medial-lateral direction, an anterior-posterior direction and an inferior-superior direction. In the case of the tibial tray, the pegs form a non-perpendicular angle with the bone contacting surface of the baseplate and are angled in both a posterior direction and a medial or lateral direction.
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Citations
10 Claims
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1. A tibial implant comprising:
a plate having a generally planar bone contacting surface bisected by an anterior-posterior plane generally parallel to a sagittal plane of the body and four pegs extending outwardly from said bone contacting surface, each of said pegs having a longitudinal axis angled between 30 and 45°
with respect to said planar bone contacting surface when measured in first, second, third and fourth planes perpendicular to the plane of the bone contacting surface, each plane containing a respective single peg longitudinal axis and the first, second, third and fourth planes of each peg angled at an angle of 5°
to 90°
with respect to said anterior-posterior plane with 90°
being perpendicular to the anterior-posterior plane wherein the peg longitudinal axis of each peg extend in parallel.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A kit for a prosthetic knee implant comprising:
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a plurality of different size tibial baseplates having planar bone contacting surfaces having tapered bores therein; and a plurality of pegs having angled and tapered end portions for coupling to said bores in the planar baseplate surface and opposite end portions for engaging a prepared tibia. - View Dependent Claims (10)
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Specification