The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 03, 2013
Filed:
Jun. 30, 2007
Roger Ryan Dees, Senatobia, MS (US);
Paul Charles Crabtree, Jr., Hesbit, MS (US);
Jonathan Kirk Nielsen, San Clemente, CA (US);
Roger Ryan Dees, Senatobia, MS (US);
Paul Charles Crabtree, Jr., Hesbit, MS (US);
Jonathan Kirk Nielsen, San Clemente, CA (US);
Smith & Nephew, Inc., Memphis, TN (US);
Abstract
A hinged knee prosthesis () comprises a tibial component () and a femoral component (). The tibial component () is configured to attach to a tibia. The tibial component has a bearing surface (). The femoral component () is configured to hingedly attach to the tibial component () and rotate relative to the tibial component (). The femoral component () comprises a medial condyle () and a lateral condyle (). The medial and lateral condyles (and) have an eccentric sagittal curvature surface () configured to rotate and translate on the bearing surface () of the tibial component (). A method of rotating a hinged knee () through a range of flexion is provided. The method fixedly attaches a femoral component () to a tibial component (). Axial rotation of the femoral component () is induced relative to the tibial component () when the hinged knee () is flexed.