Better performance of total knee replacement requires normal kinematics and higher range of motion. A potential solution can be a surface-guided knee with asymmetric configuration including a ball-and-socket articulation in the medial compartment and guiding bearing surfaces on the lateral compartment. An innovative design concept with constant bearing spacing and variable radii for the medial and lateral aspects of the lateral condyle as the guiding features is introduced as a potential design solution. This design allows for normal articulation of the patella and preservation of one or both of the cruciates. In this study, the viability of such surface-guided TKR was tested experimentally. A prototype was built and tested on the joint simulator. The results of the preliminary tests demonstrated that the reference bearing surfaces built based on the novel design concept could successfully generate motion patterns similar to the kinematics of a normal knee joint under compressive forces. The developed concept and methodologies can serve as a basis for development of a TKR with normal kinematics.
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Design Of Medical Devices Conference Abstracts
Design Concept for a Total Knee Replacement with Condylar Guiding Features
Shahram Amiri,
Shahram Amiri
University of British Columbia
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Urs P. Wyss
Urs P. Wyss
University of Mantioba
Search for other works by this author on:
Shahram Amiri
University of British Columbia
T. Derek. V. Cooke
Queen’s University
Urs P. Wyss
University of Mantioba
J. Med. Devices. Jun 2011, 5(2): 027504 (1 pages)
Published Online: June 1, 2011
Article history
Published:
June 1, 2011
Citation
Amiri, S., Cooke, T. D. V., and Wyss, U. P. (June 1, 2011). "Design Concept for a Total Knee Replacement with Condylar Guiding Features." ASME. J. Med. Devices. June 2011; 5(2): 027504. https://doi.org/10.1115/1.3589221
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