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Evaluation of different Jaipur foot-ankle assemblies using infrared thermography
Natali Olaya Mira1,2, Carolina Viloria Barragán1, Jesus Alberto Plata3,4
1Grupo de Investigación e Innovación Biomédica, Facultad de Ciencias Exactas y Aplicadas, Instituto Tecnológico Metropolitano, Medellín, Colombia.
Background:
Mechanical behavior is difficult to monitor in experimental environments, usually because of geometric or technology implementation limitations. Nevertheless, thermography has been shown to overcome these issues.
Objectives:
The aim of this study was to evaluate four types of assemblies between a Jaipur foot and a polyethylene tube using infrared thermography in order to find the best mechanical configuration in terms of thermal behavior.
Study Design:
Mechanical testing.
Technique:
An infrared camera captured short videos every 5 min over 10 h in six different positions (three in the back and three in front of the Jaipur foot) around a prosthesis subjected to repetitive stresses (axial force 980 N) simulating kinematic variables like joint angles. We established a region of interest around the foot-ankle assemblies and calculated maximum temperatures and thermographic indices.
Results:
In this study, the best foot-ankle assembly used epoxy adhesive because it presented the lowest temperature in the six positions and the lowest thermal index.
Conclusions:
Thermographic techniques can be used to study mechanical behaviors in complex experimental situations.
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