Invention Grant
- Patent Title: Natural alignment knee instruments
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Application No.: US14747411Application Date: 2015-06-23
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Publication No.: US09855057B2Publication Date: 2018-01-02
- Inventor: Stuart L. Axelson, Jr. , Mohamed Soliman , Michael C. Ferko , Robert Frederick Simes, Jr. , James H. Howell
- Applicant: Howmedica Osteonics Corp.
- Applicant Address: US NJ Mahwah
- Assignee: Howmedica Osteonics Corp.
- Current Assignee: Howmedica Osteonics Corp.
- Current Assignee Address: US NJ Mahwah
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Main IPC: A61B17/15
- IPC: A61B17/15 ; A61F2/46 ; A61B17/56 ; A61B17/02

Abstract:
A method for aligning an orthopedic implant in a joint replacement includes determining the bone and cartilage deficiency from an undegenerated state caused by wear of a joint. Then a resection of a bone in the joint is made based on the deficiency of bone and cartilage from the undegenerated state and the size of a joint implant so as to locate the joint surface of the implant in the undegenerated cartilage location. The condylar wear from the undegenerated states may be assessed at a distal and posterior location on each of a medial and a lateral femoral condyle. A distal cut is made on the femur at a location adjusting for the condylar wear from the undegenerated state. The distal cut varus-valgus angle is oriented parallel to a plane across the distal femur after adjusting for wear in the distal location on the medial and lateral condyle.
Public/Granted literature
- US20150289883A1 NATURAL ALIGNMENT KNEE INSTRUMENTS Public/Granted day:2015-10-15
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