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http://dx.doi.org/10.5143/JESK.2007.26.1.019

The Influence of Wedged Insoles on Lower Extremity Joints during Gait  

Kwon, Min-Jeong (Design Group3, Mobile Communication Division, Telecommunication Network Business, Samsung Electronics)
Choi, Hwa-Soon (Department of Industrial and Management Engineering, POSTECH)
Chung, Min-K. (Department of Industrial and Management Engineering, POSTECH)
Na, Seok-Hee (Department of Industrial and Management Engineering, POSTECH)
Publication Information
Journal of the Ergonomics Society of Korea / v.26, no.1, 2007 , pp. 19-27 More about this Journal
Abstract
Despite the widespread use of laterally wedged insoles for patients with knee osteoarthritis and medially wedged insoles for controlling rearfoot pronation, an understanding of the effects of wedged insoles was limited and sometimes controversial. The objective of this study was to evaluate the effect of wedged insoles on the kinematics and kinetics of normal gait. Ten male subjects without history of lower limb disorders were recruited. Each subject performed four gait cycles under each of seven conditions; shod with 5$^{\circ}$, 8$^{\circ}$ and 15$^{\circ}$, 8$^{\circ}$ and 15$^{\circ}$ laterally wedged insoles. In order to determine statistical differences among seven conditions, the measured temporal spatial variables, angular displacements, joint moments, and ground reaction forces were compared with a one-way analysis of variance. Some significant changes induced by wedged insoles were apparent in joint moments and ground reaction forces. The medially wedged insole increased the laterally directed ground reaction force and varus moments at the ankle force and varus moments at the ankle and the knee.
Keywords
Medially wedged insole; Laterally wedged insole; Gait analysis;
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