Papers by Andreas Marios Tsainis
Studying the Intact, ACL-Deficient and Reconstructed Human Knee Joint Using a Finite Element Model
Volume 3A: Biomedical and Biotechnology Engineering, 2013
ABSTRACT The human knee joint has a three dimensional geometry with multiple body articulations t... more ABSTRACT The human knee joint has a three dimensional geometry with multiple body articulations that produce complex mechanical responses under loads that occur in everyday life and sports activities. Knowledge of the complex mechanical interactions of these load bearing structures is of help when the treatment of relevant diseases is evaluated and assisting devices are designed.The anterior cruciate ligament in the knee connects the femur to the tibia and is often torn during a sudden twisting motion, resulting in knee instability. The objective of this work is to study the mechanical behavior of the human knee joint in typical everyday activities and evaluate the differences in its response for three different states, intact, injured and reconstructed knee. Three equivalent finite element models were developed. For the reconstructed model a novel repair device developed and patented by the authors was employed.For the verification of the developed models, static load cases presented in a previous modeling work were used. Mechanical stresses calculated for the load cases studied, were very close to results presented in previous experimentally verified work, in both load distribution and maximum calculated load values.
Evaluation of a posterior cruciate ligament deficient human knee joint finite element model
QScience Connect, 2014
Evaluation of an intact, an ACL-deficient, and a reconstructed human knee joint finite element model
Computer methods in biomechanics and biomedical engineering, Jan 2, 2015
The human knee joint has a three-dimensional geometry with multiple body articulations that produ... more The human knee joint has a three-dimensional geometry with multiple body articulations that produce complex mechanical responses under loads that occur in everyday life and sports activities. Understanding the complex mechanical interactions of these load-bearing structures is of use when the treatment of relevant diseases is evaluated and assisting devices are designed. The anterior cruciate ligament (ACL) in the knee is one of four main ligaments that connects the femur to the tibia and is often torn during sudden twisting motions, resulting in knee instability. The objective of this work is to study the mechanical behavior of the human knee joint and evaluate the differences in its response for three different states, i.e., intact, ACL-deficient, and surgically treated (reconstructed) knee. The finite element models corresponding to these states were developed. For the reconstructed model, a novel repair device was developed and patented by the author in previous work. Static loa...
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Papers by Andreas Marios Tsainis