Mathematical Modeling of the Fibre Recruitment and Shape Changes of Knee Ligaments During Motion
Date Issued
2009
Date
2009
Author(s)
Yu, Po-Hsiang
Abstract
Knee joints play very important roles in human bodies. The muscles, ligaments, and joint surfaces surround knees decide the kinematics of knees. Ligaments link a femur and a tibia, limit the motion of a knee, and sustain tensile forces during the motion. nee joints sustain larger forces usually during body motions, so knees were common to be injured while people apply improper forces to them. It is reported that the injuries in ligaments have the highest percentage of the injuries in knees. 85% percent of ligament-injury happened in anterior cruciate ligament. Therefore, people tried hardly to understand how ligaments take forces during body motions.n this study, a 3-D fibre-based model of ligaments was established. Wrapping and bone-ligament interaction were considered while computing the shape of ligaments in different knee motions. As the input parameters of the model, MRI images provided data of attachment areas, and CT images provided bone model. Computer simulations of a left knee contained femur, tibia, fibula, cruciate ligaments, and collateral ligaments were performed. Shape changes of ligaments and fibre recruitment were shown via color maps, and the result were compared with literature.
Subjects
knee
fibre-based model
cruciate ligaments
simulation
Type
thesis
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