The Influence Of Wedged Planes And Insoles On The Biomechanics Of Lower Extremities In Standing And Gait

Purpose:The biomechanics of lower extremity was tested with wedged plane and insoles, to discuss if there is a link between the multiple segments of human body. The changes in static and gait were discussed to see if there was any risk factors for low extremity injury. Basic information and data can be supplied by this research.Methods:Group 1,20 healthy males were tested with the 3D track system. Standing on different wedges was captured to show if there is a relationship between body regions. Group 2,15 healthy males were tested with the 3D track system, force plate and EMG. Inversion, eversion and normal insoles were used in the gait analysis. The data was processed with Qualisys, Matlab and Visual 3D. Statistical analysis were prepared using SPSS. Significance of the change was performed using the repeated measured. The level of significance was set at p<0.05.Results:Wedged plane changed the kinematic chain of human lower extremities on eversion 10 degree and inversion 10 degree. The peak of the adduction moment of the ankle was increased by the eversion wedged insoles by 31.6%, while the second peak of the KAM was decreased by 12.8%. The peak of the adduction moment of the ankle was decreased by the inversion wedged insoles by 11.1%, while the second peak of the KAM was increased by 8.7%. In running, the peak of ankle adduction moment was increased by 14% by everted insoles, while the peak of KAM was decreased by 17%; the peak of ankle adduction moment was decreased by 5% by inverted insoles, while the peak of KAM was increased by 9%.Conclusions:10 degree wedged plane can change the kinematics of the lower extremity chain. The kinematics of ankle, kinetics of the ankle and knee was influenced by the wedged insoles. These changes influenced by wedged planes and insoles could be some risk factors of lower extremity injury.