Journal : Acta of Bioengineering and Biomechanics
Article : Effects of unstable elements with different hardness on lower limb loading

Authors :
Demiral, M.
Department of Mechanical Engineering, University of Turkish Aeronautical Association, 06790 Ankara, Turkey,
Abdel-Wahab, A.
Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, LE11 3TU, UK,
Silberschmidt, V.
Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, LE11 3TU, UK,
Jaramillo, H.
Universidad del Valle, Cali-Colombia,
Gomez, L.
Universidad del Valle, Cali-Colombia,
Garcia, J. J.
Universidad del Valle, Cali-Colombia,
Mróz, A.
Metal Forming Institute, Poznań, Poland, adrian.mroz@inop.poznan.pl,
Skalski, K.
Warsaw University of Technology, Institute of Precision Mechanics, Warsaw, Poland,
Walczyk, W.
Metal Forming Institute, Poznań, Poland,
Kajzer, A.
Department of Biomaterials and Medical Devices Engineering, Faculty of Biomedical Engineering, Silesian University of Technology, Zabrze, Poland, anita.kajzer@polsl.pl,
Kajzer, W.
Department of Biomaterials and Medical Devices Engineering, Faculty of Biomedical Engineering, Silesian University of Technology, Zabrze, Poland,
Dzielicki, J.
Medical University of Silesia, School of Medicine in Katowice, Katowice, Poland,
Matejczyk, D.
Department of Biomaterials and Medical Devices Engineering, Faculty of Biomedical Engineering, Silesian University of Technology, Zabrze, Poland,
Nagerl, H.
University of Göttingen, Biomechanical Working Group in Department of Orthodontics, Germany,
Dathe, H.
University of Göttingen, Biomechanical Working Group in Department of Orthodontics, Germany,
Fiedler, Ch.
Lima Corporate; Hamburg, Germany,
Gowers, L.
University of Göttingen, Biomechanical Working Group in Department of Orthodontics, Germany,
Kirsch, S.
University of Göttingen, Biomechanical Working Group in Department of Orthodontics, Germany,
Kubein-Meesenburg, D.
University of Göttingen, Biomechanical Working Group in Department of Orthodontics, Germany,
Dumont, C.
University of Göttingen, Department of Trauma Surgery, Plastic and Reconstructive Surgery, Göttingen, Germany,
Wachowski, M. M.
University of Göttingen, Department of Trauma Surgery, Plastic and Reconstructive Surgery, Göttingen, Germany, martin.wachowski@web.de,
Kobielarz, M.
Department of Biomedical Engineering, Mechatronics and Theory of Mechanisms, Wroclaw University of Technology, Wrocław, Poland., magdalena.kobielarz@pwr.edu.pl,
Chwiłkowska, A.
Department of Medical Biochemistry, Medical University, Wrocław, Poland,
Turek, A.
School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Poland, Chair and Department of Biopharmacy, Sosnowiec, Poland,
Maksymowicz, K.
Department of Forensic Medicine, Medical Faculty, Wrocław Medical University, Wrocław, Poland,
Marciniak, M.
Department of Plastic Forming and Metrology, Wrocław University of Technology, Wrocław, Poland,
Patralski, K.
Wrocław University of Technology, krzysztof.patralski@pwr.wroc.pl,
Konderla, P.
Wrocław University of Technology,
Su, P.
School of Mechanical Engineering and Automation, BeiHang University, People’s Republic of China,
Yang, Y.
School of Mechanical Engineering and Automation, BeiHang University, People’s Republic of China, yang_mech@126.com,
Song, Y
School of Mechanical Engineering and Automation, BeiHang University, People’s Republic of China,
Li, F.
Faculty of Sports Science, Ningbo University, China,
Mei, Q.
Faculty of Sports Science, Ningbo University, China,
Gu, Y.
Faculty of Sports Science, Ningbo University, China, guyaodong@hotmail.com,
Abstract : Purpose: Osteoarthritis of the knee is one of the most common diseases. For this chronic disease, modified footwear structure can effectively prevent and relieve disease of the knee. The aim of this study was to explore the effects of shoe surface elastic modulus on external knee adduction moment and ground reaction force and foot loading characteristics. Methods: Sixteen healthy female volunteers were recruited, and each subject performed five walking trials under two shoes condition. The lower limb loading data was collected using force platform and in-sole pressure measurement system. Results: The results showed that the external knee adduction moment was decreased in all stance phase when wearing SS (unstable shoes with soft unstable elements), compared with HS (unstable shoes with hard unstable elements). The ground reaction force showed no obvious change under two shoes condition. Additionally, compared with HS, plantar pressure transferred from medial foot to lateral foot when wearing SS. Along with changes of contact areas, average pressure and impulse had also presented this tendency. Conclusions: These results can provide some scientific evidence and suggestions for footwear companies, and for the foot plantar medial injury disease has also certain applicability.

Keywords : ciśnienie podeszwowe, stopa, staw kolanowy, twardość, knee adduction moment, plantar pressure, unstable elements, hardness, foot,
Publishing house : Oficyna Wydawnicza Politechniki Wrocławskiej
Publication date : 2015
Number : Vol. 17, nr 2
Page : 85 – 92

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DOI :
Qute : Demiral, M. ,Abdel-Wahab, A. ,Silberschmidt, V. ,Jaramillo, H. ,Gomez, L. ,Garcia, J. J. ,Mróz, A. ,Skalski, K. ,Walczyk, W. ,Kajzer, A. ,Kajzer, W. ,Dzielicki, J. ,Matejczyk, D. ,Nagerl, H. ,Dathe, H. ,Fiedler, Ch. ,Gowers, L. ,Kirsch, S. ,Kubein-Meesenburg, D. ,Dumont, C. ,Wachowski, M. M. ,Kobielarz, M. ,Chwiłkowska, A. ,Turek, A. ,Maksymowicz, K. ,Marciniak, M. ,Patralski, K. ,Konderla, P. ,Su, P. ,Yang, Y. ,Song, Y ,Li, F. ,Mei, Q. ,Gu, Y. ,Gu, Y. , Effects of unstable elements with different hardness on lower limb loading. Acta of Bioengineering and Biomechanics Vol. 17, nr 2/2015
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