Finite Element Analysis of Donning Procedure of a Prosthetic Transfemoral Socket

Lower limb amputation is a severe psychological and physical event in a patient. A prosthetic solution can be provided but should respond to a patient-specific need to accommodate for the geometrical and biomechanical specificities. A new approach to calculate the stress–strain state at the interact...

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Published in:Annals of biomedical engineering 2011-12, Vol.39 (12), p.2972-2983
Main Authors: Lacroix, Damien, Ramírez Patiño, Juan Fernando
Format: Article
Language:English
Subjects:
Adult
Amputation Stumps - surgery
Amputees
Artificial Limbs
Biochemistry
Biological and Medical Physics
Biomechanical Phenomena
Biomedical and Life Sciences
Biomedical Engineering and Bioengineering
Biomedicine
Biophysics
Classical Mechanics
Femur - surgery
Finite Element Analysis
Humans
Male
Middle Aged
Prosthesis Design
Stress, Mechanical
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cites cdi_FETCH-LOGICAL-c468t-25ea01af21bae8d7ac44044188c60ac21e185a284de662ebf2dc54a5f4156023
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container_title Annals of biomedical engineering
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creator Lacroix, Damien
Ramírez Patiño, Juan Fernando
description Lower limb amputation is a severe psychological and physical event in a patient. A prosthetic solution can be provided but should respond to a patient-specific need to accommodate for the geometrical and biomechanical specificities. A new approach to calculate the stress–strain state at the interaction between the socket and the stump of five transfemoral amputees is presented. In this study the socket donning procedure is modeled using an explicit finite element method based on the patient-specific geometry obtained from CT and laser scan data. Over stumps the mean maximum pressure is 4 kPa (SD 1.7) and the mean maximum shear stresses are 1.4 kPa (SD 0.6) and 0.6 kPa (SD 0.3) in longitudinal and circumferential directions, respectively. Locations of the maximum values are according to pressure zones at the sockets. The stress–strain states obtained in this study can be considered more reliable than others, since there are normal and tangential stresses associated to the socket donning procedure.
doi_str_mv 10.1007/s10439-011-0389-z
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1573-9686
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subjects Adult
Amputation Stumps - surgery
Amputees
Artificial Limbs
Biochemistry
Biological and Medical Physics
Biomechanical Phenomena
Biomedical and Life Sciences
Biomedical Engineering and Bioengineering
Biomedicine
Biophysics
Classical Mechanics
Femur - surgery
Finite Element Analysis
Humans
Male
Middle Aged
Prosthesis Design
Stress, Mechanical
title Finite Element Analysis of Donning Procedure of a Prosthetic Transfemoral Socket
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