Document Type

Patent

Patent Number

US Patent 7,625,409

Patent agency

United States Patent and Trademark Office

Publication Date

12-1-2009

Assignee

University of Iowa Research Foundation (Iowa City, IA, US) ; Deland, Jonathan T. (New York, NY, US) ; Burstein, Albert H. (Sarasota, FL, US)

Application Number

10/965,070

Date Filed

2004-10-14

Total Pages

25 pages

Abstract

A fixed-bearing ankle prosthesis may include tibial and talar components whose articulating surfaces directly contact one another. The tibial component defines medial and lateral concave condylar facets separated by a convex central portion. The talar component includes medial and lateral convex condyles separated by a concave central portion. The condyles each have a single radius of curvature in a medial-lateral plane such that each condyle has a circular-arc cross-section continuously extending from the respective medial or lateral edge of the talar component to the concave central portion. The medial-lateral radii of the condyles are smaller than corresponding radii of the condylar facets.

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URL

https://ir.uiowa.edu/patents/493