Patellar component failure accounts for the majority of complications with total knee arthroplasty procedures [1]. Current patellar component tests involve loads that do not categorize failures as seen in clinical data. The aim of this project is to define the forces that lead to failure and design a test that can predict these failures. Clinical data reveals that the primary mode of failure of patellar components involves polyethylene wear most prominent at the lateral aspect of the component in various types of patella designs. Research on normal knee anatomy, kinematics and forces indicates that quadriceps tension results in a net lateral force exerted on the patella. This force, combined with the lateral to medial motion of the patella and its contact with the femoral condyles during 60° to 140° flexion, is theorized to be the contributing factor that leads to the observed clinical failure.
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ASME 2004 International Mechanical Engineering Congress and Exposition
November 13–19, 2004
Anaheim, California, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
0-7918-4703-9
PROCEEDINGS PAPER
Development of a Pre-Clinical Patellar Component Test for Total Knee Arthroplasty
Mariana E. Kersh,
Mariana E. Kersh
University of Wisconsin at Madison
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Heidi-Lynn Ploeg
Heidi-Lynn Ploeg
University of Wisconsin at Madison
Search for other works by this author on:
Mariana E. Kersh
University of Wisconsin at Madison
Heidi-Lynn Ploeg
University of Wisconsin at Madison
Paper No:
IMECE2004-61226, pp. 307-308; 2 pages
Published Online:
March 24, 2008
Citation
Kersh, ME, & Ploeg, H. "Development of a Pre-Clinical Patellar Component Test for Total Knee Arthroplasty." Proceedings of the ASME 2004 International Mechanical Engineering Congress and Exposition. Advances in Bioengineering. Anaheim, California, USA. November 13–19, 2004. pp. 307-308. ASME. https://doi.org/10.1115/IMECE2004-61226
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