Finite element analysis of the human ACL subjected to passive anterior tibial loads
Finite element analysis of the human ACL subjected to passive anterior tibial loads
In this study, a constitutive law based on a nearly incompressible transversely isotropic hyperelastic potential is proposed to describe the mechanical behaviour of the anterior cruciate ligament (ACL). The constitutive formulation is valid for arbitrary kinematics (finite elasticity) and is thermodynamically admissible. Based on anatomic measurements performed on a human cadaveric knee specimen, a three-dimensional continuum finite element model of the ACL was developed. The numerical model was used to simulate clinical procedures such as the Lachman and drawer tests, which are performed to assess the existence and severity of an ACL injury. Finite element analyses showed that the two procedures have distinct effects on the behaviour of the ACL and provided new insights into the stress distributions. Moreover, good qualitative and quantitative agreement was found between the present study and results obtained experimentally in comparable conditions.
acl, constitutive law, finite element, drawer test, lachman test
1-8
Limbert, Georges
a1b88cb4-c5d9-4c6e-b6c9-7f4c4aa1c2ec
Middleton, John
f17a8eb5-cc2e-42a4-9654-ae6376629cab
Taylor, Mark
e368bda3-6ca5-4178-80e9-41a689badeeb
2004
Limbert, Georges
a1b88cb4-c5d9-4c6e-b6c9-7f4c4aa1c2ec
Middleton, John
f17a8eb5-cc2e-42a4-9654-ae6376629cab
Taylor, Mark
e368bda3-6ca5-4178-80e9-41a689badeeb
Limbert, Georges, Middleton, John and Taylor, Mark
(2004)
Finite element analysis of the human ACL subjected to passive anterior tibial loads.
Computer Methods in Biomechanics and Biomedical Engineering, 7 (1), .
(doi:10.1080/10255840410001658839).
Abstract
In this study, a constitutive law based on a nearly incompressible transversely isotropic hyperelastic potential is proposed to describe the mechanical behaviour of the anterior cruciate ligament (ACL). The constitutive formulation is valid for arbitrary kinematics (finite elasticity) and is thermodynamically admissible. Based on anatomic measurements performed on a human cadaveric knee specimen, a three-dimensional continuum finite element model of the ACL was developed. The numerical model was used to simulate clinical procedures such as the Lachman and drawer tests, which are performed to assess the existence and severity of an ACL injury. Finite element analyses showed that the two procedures have distinct effects on the behaviour of the ACL and provided new insights into the stress distributions. Moreover, good qualitative and quantitative agreement was found between the present study and results obtained experimentally in comparable conditions.
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Published date: 2004
Keywords:
acl, constitutive law, finite element, drawer test, lachman test
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Local EPrints ID: 22846
URI: http://eprints.soton.ac.uk/id/eprint/22846
ISSN: 1025-5842
PURE UUID: a11a0ca8-63ae-46ca-b22e-0f15731d238f
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Date deposited: 22 Mar 2006
Last modified: 15 Mar 2024 06:41
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Author:
John Middleton
Author:
Mark Taylor
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