This study investigates the design requirements for guiding features that can be incorporated into the shapes of the femoral condyles and the tibial component geometry of a knee replacement system without occupying the intercondylar space of the joint so that the cruciates can be spared and still produce more physiological motions. A conceptual design for a surface-guided knee is introduced to induce effective guiding both in flexion and extension by novel features incorporated in the shape of the lateral condyle. This design can accommodate preservation of either of the cruciates while deficiencies in the functions of the other are compensated by contributions of the articular geometry in guiding the motion and stabilizing the joint. The preliminary kinematic tests on a prototype demonstrated viability of the features in guiding motion under compression.
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e-mail: shahramiri@gmail.com
e-mail: derek@cookes.com
e-mail: wyss@cc.umanitoba.ca
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June 2011
Design Innovations
Conceptual Design for Condylar Guiding Features of a Total Knee Replacement
Shahram Amiri,
Shahram Amiri
Department of Orthopaedic Surgery,
e-mail: shahramiri@gmail.com
University of British Columbia
, Vancouver, BC, V6T 1Z4, Canada
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T. Derek V. Cooke,
T. Derek V. Cooke
School of Rehabilitation Therapy,
e-mail: derek@cookes.com
Queen’s University
, Kingston, ON, K7L 3N6, Canada
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Urs P. Wyss
Urs P. Wyss
Department of Mechanical and Manufacturing Engineering,
e-mail: wyss@cc.umanitoba.ca
University of Manitoba
, Winnipeg, MB, R3T 2N2, Canada
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Shahram Amiri
Department of Orthopaedic Surgery,
University of British Columbia
, Vancouver, BC, V6T 1Z4, Canadae-mail: shahramiri@gmail.com
T. Derek V. Cooke
School of Rehabilitation Therapy,
Queen’s University
, Kingston, ON, K7L 3N6, Canadae-mail: derek@cookes.com
Urs P. Wyss
Department of Mechanical and Manufacturing Engineering,
University of Manitoba
, Winnipeg, MB, R3T 2N2, Canadae-mail: wyss@cc.umanitoba.ca
J. Med. Devices. Jun 2011, 5(2): 025001 (9 pages)
Published Online: May 2, 2011
Article history
Received:
August 4, 2010
Revised:
February 10, 2011
Online:
May 2, 2011
Published:
May 2, 2011
Citation
Amiri, S., Cooke, T. D. V., and Wyss, U. P. (May 2, 2011). "Conceptual Design for Condylar Guiding Features of a Total Knee Replacement." ASME. J. Med. Devices. June 2011; 5(2): 025001. https://doi.org/10.1115/1.4003675
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