STRESS-STRAIN DISTRIBUTION IN THE MODEL OF RETROCALCANEAL BURSITIS BY USING HEEL-ELEVATION INSOLES
The aim of this study is the analysis of the equivalent stress on the rear foot structures in retrocalcaneal bursitis, when using heel-elevation insoles of different heights (10 mm and 20 mm). Methods – mathematical calculations of the Achilles force required in the heel-off of the gait stance ph...
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doaj-11d7144b6aaa434f81cef80660079fa62020-12-01T10:52:57ZengScientific Route OÜEUREKA: Health Sciences2504-56602504-56792020-10-016313910.21303/2504-5679.2020.0014441444STRESS-STRAIN DISTRIBUTION IN THE MODEL OF RETROCALCANEAL BURSITIS BY USING HEEL-ELEVATION INSOLESBohdan Gerasimyuk0Igor Lazarev1Oleksandr Movchan2Maksym Skyban3Shupyk National Medical Academy of Postgraduate EducationInstitute of Traumatology and Orthopedics of the National Academy of Medical Sciences of UkraineShupyk National Medical Academy of Postgraduate Education Institute of Traumatology and Orthopedics of the National Academy of Medical Sciences of UkraineThe aim of this study is the analysis of the equivalent stress on the rear foot structures in retrocalcaneal bursitis, when using heel-elevation insoles of different heights (10 mm and 20 mm). Methods – mathematical calculations of the Achilles force required in the heel-off of the gait stance phase in the conditions of lifting the heel by 10 mm and 20 mm. A 3D-simulation foot model with an enlarged retrocalcaneal bursa was created. The analysis was carried out by the finite element method to calculate and study the stress and strain in the rear foot structures. Results. When using a 10.0 mm height heel-elevation insole, the calf muscle strength, which must be applied to the heel-off of the gait stance phase, was 19.0 % less than without support and 26.8 % less in 20.0 mm insole. Accordingly, analyzing the simulation results in terms of von-Mises stress, the maximum stress observed on the Achilles tendon decreases by 20.0 % and by 30.0 %. The total deformations maximum in the model when using heel-elevation insoles decreased up to 18.1 % and they were localized not in the tendon, but in the bone structures of subtalar joint. The maximum values of the total deformation of the model in the case of 10.0 mm and 20.0 mm heel-elevation insoles were 91.67 mm (–20.2 %) and 80.04 mm (–30.3 %), respectively, compared 114.92 mm in the absence of insoles. When using insole with a height of 10.0 mm, the stress in the retrocalcaneal bursa decreased by 20.0 % and was equal to 14.92 MPa compared to 18.66 MPa, and when using a 20.0 mm insoles - by 30.0 %. Conclusions. It was found that when using 10.0–20.0 mm heel-elevation insoles, the stress distribution in the rear foot structures was significantly reduced by an average of 20.0-30.0 % and correlated with the height of the insoles.http://journal.eu-jr.eu/health/article/view/1444achilles tendon; retrocalcaneal bursitis; tendinopathy; heel elevation insoles |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Bohdan Gerasimyuk Igor Lazarev Oleksandr Movchan Maksym Skyban |
spellingShingle |
Bohdan Gerasimyuk Igor Lazarev Oleksandr Movchan Maksym Skyban STRESS-STRAIN DISTRIBUTION IN THE MODEL OF RETROCALCANEAL BURSITIS BY USING HEEL-ELEVATION INSOLES EUREKA: Health Sciences achilles tendon; retrocalcaneal bursitis; tendinopathy; heel elevation insoles |
author_facet |
Bohdan Gerasimyuk Igor Lazarev Oleksandr Movchan Maksym Skyban |
author_sort |
Bohdan Gerasimyuk |
title |
STRESS-STRAIN DISTRIBUTION IN THE MODEL OF RETROCALCANEAL BURSITIS BY USING HEEL-ELEVATION INSOLES |
title_short |
STRESS-STRAIN DISTRIBUTION IN THE MODEL OF RETROCALCANEAL BURSITIS BY USING HEEL-ELEVATION INSOLES |
title_full |
STRESS-STRAIN DISTRIBUTION IN THE MODEL OF RETROCALCANEAL BURSITIS BY USING HEEL-ELEVATION INSOLES |
title_fullStr |
STRESS-STRAIN DISTRIBUTION IN THE MODEL OF RETROCALCANEAL BURSITIS BY USING HEEL-ELEVATION INSOLES |
title_full_unstemmed |
STRESS-STRAIN DISTRIBUTION IN THE MODEL OF RETROCALCANEAL BURSITIS BY USING HEEL-ELEVATION INSOLES |
title_sort |
stress-strain distribution in the model of retrocalcaneal bursitis by using heel-elevation insoles |
publisher |
Scientific Route OÜ |
series |
EUREKA: Health Sciences |
issn |
2504-5660 2504-5679 |
publishDate |
2020-10-01 |
description |
The aim of this study is the analysis of the equivalent stress on the rear foot structures in retrocalcaneal bursitis, when using heel-elevation insoles of different heights (10 mm and 20 mm).
Methods – mathematical calculations of the Achilles force required in the heel-off of the gait stance phase in the conditions of lifting the heel by 10 mm and 20 mm. A 3D-simulation foot model with an enlarged retrocalcaneal bursa was created. The analysis was carried out by the finite element method to calculate and study the stress and strain in the rear foot structures.
Results. When using a 10.0 mm height heel-elevation insole, the calf muscle strength, which must be applied to the heel-off of the gait stance phase, was 19.0 % less than without support and 26.8 % less in 20.0 mm insole. Accordingly, analyzing the simulation results in terms of von-Mises stress, the maximum stress observed on the Achilles tendon decreases by 20.0 % and by 30.0 %. The total deformations maximum in the model when using heel-elevation insoles decreased up to 18.1 % and they were localized not in the tendon, but in the bone structures of subtalar joint.
The maximum values of the total deformation of the model in the case of 10.0 mm and 20.0 mm heel-elevation insoles were 91.67 mm (–20.2 %) and 80.04 mm (–30.3 %), respectively, compared 114.92 mm in the absence of insoles. When using insole with a height of 10.0 mm, the stress in the retrocalcaneal bursa decreased by 20.0 % and was equal to 14.92 MPa compared to 18.66 MPa, and when using a 20.0 mm insoles - by 30.0 %.
Conclusions. It was found that when using 10.0–20.0 mm heel-elevation insoles, the stress distribution in the rear foot structures was significantly reduced by an average of 20.0-30.0 % and correlated with the height of the insoles. |
topic |
achilles tendon; retrocalcaneal bursitis; tendinopathy; heel elevation insoles |
url |
http://journal.eu-jr.eu/health/article/view/1444 |
work_keys_str_mv |
AT bohdangerasimyuk stressstraindistributioninthemodelofretrocalcanealbursitisbyusingheelelevationinsoles AT igorlazarev stressstraindistributioninthemodelofretrocalcanealbursitisbyusingheelelevationinsoles AT oleksandrmovchan stressstraindistributioninthemodelofretrocalcanealbursitisbyusingheelelevationinsoles AT maksymskyban stressstraindistributioninthemodelofretrocalcanealbursitisbyusingheelelevationinsoles |
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