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A Procedure For Estimating The Relevant Forces In The Human Knee Using A Four-Bar Mechanism

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Sun, 2013-03-03 11:40 — Nidal Farhat
Journal Title, Volume, Page: 
Computer Methods in Biomechanics and Biomedical Engineering Volume 13, Issue 5, 2010
Year of Publication: 
2010
Link: 
http://dx.doi.org/10.1080/10255840903352540
Authors: 
Nidal Farhat
centro de Investigación de Tecnología de Vehículos (CITV), Universidad Politécnica de Valencia, Camino de Vera S/N, 46022, Valencia, Spain
Current Affiliation: 
Department of Mechanical Engineering, Faculty of Engineering, An-Najah National University, Nablus, P.O. Box 7, Palestine
[email protected]
Vicente Mata
centro de Investigación de Tecnología de Vehículos (CITV), Universidad Politécnica de Valencia, Camino de Vera S/N, 46022, Valencia, Spain
Rosa, David
Instituto de Biomecánica de Valencia (IBV), Universidad Politécnica de Valencia, Camino de Vera S/N, 46022, Valencia, Spain
Fayos, Juan
Instituto de Biomecánica de Valencia (IBV), Universidad Politécnica de Valencia, Camino de Vera S/N, 46022, Valencia, Spain
Preferred Abstract (Original): 

Knee injuries, especially those that affect the cruciate and lateral ligaments, are one of the most serious and frequent pathologies that affect the lower human extremity. Hence, the aim of this study is to develop a dynamic model for the lower extremity capable of estimating forces, forces in the cruciate and collateral ligaments and those normal to the articular cartilage, generated in the knee. The proposed model considers a four-bar mechanism in the knee, a spherical joint in the pelvis and a revolute one in the ankle. The four-bar mechanism is obtained by a synthesis process. The dynamic model includes the inertial properties of the femur, tibia, patella and the foot, the ground reaction force and the most important muscles in the knee. Muscle forces are estimated using an optimisation technique. Results from the application of the model on a real human task are presented.