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Numerical investigation of the optimum cushioning properties of insole materials: the effect of subject-specific geometry and loading

Chatzistergos, Panagiotis, Naemi, Roozbeh and Chockalingam, Nachiappan (2015) Numerical investigation of the optimum cushioning properties of insole materials: the effect of subject-specific geometry and loading. Footwear Science, 7 (sup1). S136-S137. ISSN 1942-4280

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Abstract or description

This study aims to develop a numerical method that can be used to investigate the cushioning properties of different insole materials on a subject-specific basis. Diabetic footwear and orthotic insoles play an important role for the reduction of plantar pressure in people with diabetes (type-2). Despite that, little information exists about their optimum cushioning properties. A new in-vivo measurement based computational procedure was developed which entails the generation of 2D subject-specific finite element models of the heel pad based on ultrasound indentation. These models are used to inverse engineer the material properties of the heel pad and simulate the contact between plantar soft tissue and a flat insole. After its validation this modelling procedure was utilised to investigate the importance of plantar soft tissue stiffness, thickness and loading for the correct selection of insole material. The results indicated that heel pad stiffness and thickness influence plantar pressure but not the optimum insole properties. On the other hand loading appears to significantly influence the optimum insole material properties. These results indicate that parameters that affect the loading of the plantar soft tissues such as body mass or a person's level of physical activity should be carefully considered during insole material selection.

Item Type: Article
Faculty: School of Life Sciences and Education > Sport and Exercise
Depositing User: Roozbeh NAEMI
Date Deposited: 02 Jun 2017 10:24
Last Modified: 16 Mar 2018 14:43
URI: http://eprints.staffs.ac.uk/id/eprint/3160

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