US 9,788,846 B2Granted

Unicompartmental customized arthroplasty cutting jigs

AssigneeHowmedica Osteonics Corp.

InventorsIlwhan Park, Michael Koehle, Lorenzo R. Deveza

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Abstract

Disclosed herein are unicompartmental femoral and tibial arthroplasty jigs for respectively assisting in the performance of unicompartmental femoral and tibial arthroplasty procedures on femoral and tibial arthroplasty target regions. The jigs each include a mating surface. The mating surface of the femoral jig is configured to matingly receive and contact a generally planar area of an anterior side of a femoral shaft generally proximal of the patellar facet border and generally distal an articularis genu. The mating surface of the tibial jig is configured to matingly receive and contact a generally planar area of an anterior side of a tibial shaft distal of the tibial plateau edge and generally proximal of the tibial tuberosity.

Claims18

Dependent claims

A tibial arthroplasty jig for assisting in the performance of a tibial arthroplasty procedure on an arthroplasty target region of a tibia of a patient's knee joint, the tibia including a medial articular plateau surface, an intercondyloid eminence surface having a medial upslope, a generally planar area of an anterior side of a tibial shaft, a tibial plateau edge, a tibial tuberosity, and a region extending from anterior the intercondyloid eminence to towards the tuberosity over an edge transition from a tibial plateau region, the tibial arthroplasty procedure being associated with an implantation of a prosthetic tibial implant, the jig comprising:

a mating surface including a customized surface contour that is generally a negative of the medial articular plateau surface, the intercondyloid eminence surface, and the generally planar area of the anterior side of the tibial shaft,
wherein the mating surface is configured to make contact with the tibia that includes, and is limited to, contact with the medial articular plateau surface, the intercondyloid eminence surface, and the generally planar area of the anterior side of the tibial shaft when the jig is applied to the tibia to perform the tibial arthroplasty procedure on the arthroplasty target region.

Dependencies are inferred from the claim text.

Facts

Application: 14/086,878Filed 21 Nov 2013 · division
Priority: 16 Dec 2008
Published: US 2014/0128875 A18 May 2014
Granted: 17 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

A61B 17/1764
Specially adapted for particular parts of the body: for the knee
A61B 17/155
For preparing bone for knee prosthesis: cutting femur
A61B 17/157
For preparing bone for knee prosthesis: cutting tibia
A61B 2034/105
Computer-aided simulation of surgical operations: modelling of the patient, e.g. for ligaments or bones

Family

Application61/122,842Us provisional application · filed 16 Dec 2008
Application12/636,939Parent of this division · filed 14 Dec 2009
US 2014/0128875 A1Pre-grant publication · published 8 May 2014
US 8,617,175 B2Parent of this division
US 2010/0152741 A1Published application
US 9,788,846 B2This patent

From the US filing history. Foreign family members aren’t listed.