10.1186/1757-1146-6-39Journal of Foot and Ankle Research61

A Mündermann

AJ Baliunas

AJ Sutton

B Vanwanseele

C Cooper

CM Michaud

D Zhao

DC Kerrigan

DE Hurwitz

DJ Hart

DT Felson

E Bagge

EC Lau

EL Radin

EM Russell

H Lindberg

H Sandmark

HM Frost

JA Buckwalter

JA White

Jaeyoung Park

JC Erhart

JC Erhart-Hledik

Jee Chin Teoh

Jin Huat Low

JL Astephen

K Michaëlsson

K Tetsworth

KA Boyer

KB Shelburne

KK Hovis

KL Bennell

L Sharma

L Weidenhielm

LA Setton

MT Hannan

N Arden

N Yoshimura

NE Lane

OD Schipplein

P Levinger

P Manninen

RC Lawrence

RL Imeokparia

RS Hinman

RS Panush

S Amin

S Drawer

S Sarna

S Shimada

Sang Jun Park

Seung-Bum Park

SJ Crenshaw

T Bhatnagar

T Miyazaki

Taeyong Lee

TB Birmingham

TE McAlindon

TR Jenkyn

UM Kujala

Victor Phyau-Wui Shim

W-M Chen

WM Chen

Y Cheng

Ying Bena Lim

Journal of Foot and Ankle Research

PubMed

Springer - Publisher Connector

Investigation of the biomechanical effect of variable stiffness shoe on external knee adduction moment in various dynamic exercises

Abstract
          
            Background
            The growing ageing population and high prevalence of knee osteoarthritis (OA) in athletes across nations have created a strong demand for improved non-invasive therapeutic alternatives for knee OA. The aim of this study is to investigate the effect of the variable stiffness shoe (VSS), a new non-invasive therapeutic approach, on external knee adduction moment (EKAM) in various dynamic exercises. EKAM is believed to have positive correlation with the progression and development of knee OA.
          
          
            Methods
            Thirty young participants (16 male and 14 female; age 22.6 ± 1.9 years) from National University of Singapore were enrolled in this study. The tested activities were walking, running, drop-landing, and lateral hopping. All the dynamic exercises were recorded simultaneously by the 8-camera VICON Motion Systems (Oxford Metric, UK) with a sampling rate of 100 Hz.
          
          
            Results
            The results showed that the EKAM was reduced in all the dynamic exercises with the use of VSS. The VSS produced significant reductions in the peak EKAM during walking (4.97%, p = 0.039), running (11.15%, p = 0.011), drop-landing (11.18%, p = 0.038) and lateral hopping (17.34%, p = 0.023) as compared to the control shoe.
          
          
            Conclusions
            The reduction of EKAM with the use of VSS in various dynamic exercises demonstrates its potential in delaying the onset and the progression of knee OA in early stage of knee OA patients.
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Investigation of the biomechanical effect of variable stiffness shoe on external knee adduction moment in various dynamic exercises

Abstract

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