NDLI: Finite Element Modeling of Knee Joint Contact Pressures and Comparison to Magnetic Resonance Imaging of the Loaded Knee

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Yao, Jiang Art, D. Salo Barbu-Mcinnis, Monica Amy, L. Lerner
Copyright Year	2003
Abstract	A finite element model of the knee joint could be helpful in providing insight on mechanisms of injury, effects of treatment, and the role of mechanical factors in degenerative conditions. However, preparation of such a model involves many geometric simplifications and input of material properties, some of which are poorly understood. Therefore, a method to compare model predictions to actual behaviors under controlled conditions could provide confidence in the model before exploration of other loading scenarios. Our laboratory has developed a method to apply axial loads to the in vivo human knee during magnetic resonance imaging, resembling weightbearing conditions. Image processing algorithms may then be used to assess the three-dimensional kinematics of the tibia and femur during loading. A three-dimensional model of the tibio-menisco-femoral contact has been generated and the image-based kinematic boundary conditions were applied to investigate the distribution of stresses and strains in the articular cartilage and menisci throughout the loading period. In this study, our goal is to investigate the contact patterns during long term loading of up to twenty minutes in the healthy knee. Specifically, we assess the use of both elastic and poroelastic material properties in the cartilage, and compare model predictions to known loading conditions and images of tissue deformations.
Sponsorship	Bioengineering Division
Starting Page	247
Ending Page	248
Page Count	2
File Format	PDF
ISBN	0791837106
DOI	10.1115/IMECE2003-43153
Volume Number	Advances in Bioengineering
Conference Proceedings	ASME 2003 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2003-11-15
Publisher Place	Washington, DC, USA
Access Restriction	Subscribed
Subject Keyword	Knee Injury mechanisms Deformation Image processing Biological tissues Three-dimensional models Modeling Stress Cartilage Finite element model Algorithms Magnetic resonance imaging Kinematics Materials properties Boundary-value problems Finite element analysis
Content Type	Text
Resource Type	Article

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