Femoral augments for use with knee joint prosthesis

US7892288B2 · kind B2 · utility

Assignee

• Zimmer Technology, Inc. · US

Inventors

• Jeff Blaylock · Fort Wayne, US
• Michael Cook · Claypool, US
• Ron Donkers · Warsaw, US
• Scott Dykema · Warsaw, US
• Maleata Hall · Oceanside, US
• John E. Meyers · Columbia City, US
• Arlen D. Hanssen · Rochester, US
• David Lewallen · Rochester, US

Key dates

• Filing date: Mar 5, 2004
• Grant date: Feb 22, 2011
• Expiry date: Sep 19, 2025

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2310/00544
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A femoral augment, or set of augments, for use with a knee joint prosthesis, where the femoral augment includes a main body portion, an aperture formed within the main body portion and extending in a generally distal/proximal direction, and a pair of legs extending outwardly from said main body portion in a generally posterior direction. In the preferred embodiment, the aperture is configured to receive a stem extension implant, and to allow it to pass through. Additionally, the legs of the femoral augment are preferably configured to be seated proximal of a proximal side of a pair of condylar portions of a femoral component of a knee joint prosthesis. The present invention is intended for situations in which the distal portion of the femur is defective, and it provides a method and devices that allow for preservation of healthy peripheral bone, while still providing the necessary augmentation to the distal portion of the femur.