Static load-bearing characteristics of the in vitro talocrural articulation subjected to internal-external torque

The response of the human talocrural articulation to internal and external torques was investigated in an in vitro study. Experimental and theoretical methods were used to evaluate this response in terms of (1) displacement between the tibia and the talus, (2) tension in the major ligamentous struct...

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Main Author: Fraser, Gregory A. (Gregory Allan)
Format: Others
Language:en
Published: McGill University 1982
Subjects:
Online Access:http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68689
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spelling ndltd-LACETR-oai-collectionscanada.gc.ca-QMM.686892014-02-13T03:44:16ZStatic load-bearing characteristics of the in vitro talocrural articulation subjected to internal-external torqueFraser, Gregory A. (Gregory Allan)Ankle.Human mechanics.The response of the human talocrural articulation to internal and external torques was investigated in an in vitro study. Experimental and theoretical methods were used to evaluate this response in terms of (1) displacement between the tibia and the talus, (2) tension in the major ligamentous structures of the joint, and (3) stresses in the bones of the talocrural joint mortise. The experimental investigation involved the design and fabrication of several testing and measurement instruments, including a three-dimensional joint loading apparatus, a six degrees-of-freedom displacement measuring device, and several implantable, non-destructive ligament tension transducers. The stress distribution in the talocrural mortise was estimated using a three-dimensional finite element model with simulated physiological loading conditions.The effects of the talocrural joint flexion angle, the subtalar joint angle, and the amount of weightbearing across the joint were examined. The results showed a varying joint behavior for the same torque application across the range of variables studied. Based on the experimental and theoretical findings, a mechanism for the talocrural joint response to torque was proposed. In addition, the results have been discussed in terms of their clinical significance.McGill University1982Electronic Thesis or Dissertationapplication/pdfenalephsysno: 000150976proquestno: AAINK61107Theses scanned by UMI/ProQuest.All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated.Doctor of Philosophy (Department of Mechanical Engineering) http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68689
collection NDLTD
language en
format Others
sources NDLTD
topic Ankle.
Human mechanics.
spellingShingle Ankle.
Human mechanics.
Fraser, Gregory A. (Gregory Allan)
Static load-bearing characteristics of the in vitro talocrural articulation subjected to internal-external torque
description The response of the human talocrural articulation to internal and external torques was investigated in an in vitro study. Experimental and theoretical methods were used to evaluate this response in terms of (1) displacement between the tibia and the talus, (2) tension in the major ligamentous structures of the joint, and (3) stresses in the bones of the talocrural joint mortise. The experimental investigation involved the design and fabrication of several testing and measurement instruments, including a three-dimensional joint loading apparatus, a six degrees-of-freedom displacement measuring device, and several implantable, non-destructive ligament tension transducers. The stress distribution in the talocrural mortise was estimated using a three-dimensional finite element model with simulated physiological loading conditions. === The effects of the talocrural joint flexion angle, the subtalar joint angle, and the amount of weightbearing across the joint were examined. The results showed a varying joint behavior for the same torque application across the range of variables studied. Based on the experimental and theoretical findings, a mechanism for the talocrural joint response to torque was proposed. In addition, the results have been discussed in terms of their clinical significance.
author Fraser, Gregory A. (Gregory Allan)
author_facet Fraser, Gregory A. (Gregory Allan)
author_sort Fraser, Gregory A. (Gregory Allan)
title Static load-bearing characteristics of the in vitro talocrural articulation subjected to internal-external torque
title_short Static load-bearing characteristics of the in vitro talocrural articulation subjected to internal-external torque
title_full Static load-bearing characteristics of the in vitro talocrural articulation subjected to internal-external torque
title_fullStr Static load-bearing characteristics of the in vitro talocrural articulation subjected to internal-external torque
title_full_unstemmed Static load-bearing characteristics of the in vitro talocrural articulation subjected to internal-external torque
title_sort static load-bearing characteristics of the in vitro talocrural articulation subjected to internal-external torque
publisher McGill University
publishDate 1982
url http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68689
work_keys_str_mv AT frasergregoryagregoryallan staticloadbearingcharacteristicsoftheinvitrotalocruralarticulationsubjectedtointernalexternaltorque
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