Staffordshire University logo
STORE - Staffordshire Online Repository

Associations between changes in loading pattern, deformity, and internal stresses at the foot with hammer toe during walking; a finite element approach

Moayedi, M., Arshi, A.R., Salehi, M., Akrami, M. and NAEMI, Roozbeh (2021) Associations between changes in loading pattern, deformity, and internal stresses at the foot with hammer toe during walking; a finite element approach. Computers in Biology and Medicine, 135. p. 104598. ISSN 0010-4825

[img] Text
Moayedi et al 2021.pdf - AUTHOR'S ACCEPTED Version (default)
Restricted to Repository staff only until 22 June 2022.
Available under License Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0).

Download (1MB) | Request a copy

Abstract or description

Over the past decade, Finite Element (FE) modelling has been used as a method to understand the internal stresses within the diabetic foot. Foot deformities such as hammer toe have been associated with increased risk of foot ulcers in diabetic patients. Hence the aim of this study is to investigate the influence of hammer toe deformity on internal stresses during walking. A 3D finite element model of the human foot was constructed based on capturing Magnetic Resonance Imaging (MRI) of a diabetic neuropathic volunteer exhibiting hammer toe. 3D gait measurements and a multi-body musculoskeletal model for the same participant were used to define muscle forces. FE simulations were run at five different instances during the stance phase of gait. Peak plantar pressure and pressure distribution results calculated from the model showed a good agreement with the experimental measurement having less than 11% errors. Maximum von Mises internal stresses in the forefoot hard tissue were observed at the 3rd and 5th metatarsals and 4th proximal phalanx. Moreover, presence of hammer toe deformity was found to shift the location of maximum internal stresses on the soft tissue to the forefoot by changing the location of centre of pressure with internal stress 1.64 times greater than plantar pressure. Hammer toe deformity also showed to reduce the involvement of the first phalanx in internal/external load-bearing during walking. The findings of this study support the association between changes in loading pattern, deformity, and internal stresses in the soft tissue that lead to foot ulceration.

Item Type: Article
Uncontrolled Keywords: Finite element analysis, Plantar soft tissue, Diabetic foot, Foot ulcer, Tissue biomechanics
Faculty: School of Life Sciences and Education > Sport and Exercise
Depositing User: Roozbeh NAEMI
Date Deposited: 03 Sep 2021 15:00
Last Modified: 03 Sep 2021 15:00
URI: http://eprints.staffs.ac.uk/id/eprint/6994

Actions (login required)

View Item View Item

DisabledGo Staffordshire University is a recognised   Investor in People. Sustain Staffs
Legal | Freedom of Information | Site Map | Job Vacancies
Staffordshire University, College Road, Stoke-on-Trent, Staffordshire ST4 2DE t: +44 (0)1782 294000