Efficacy of a continuous symmetry index in detecting the symmetry of sagittal lower limb joint angle at 3-D gait analysis of healthy youth female
XU Yi
WANG Chuhuai
HAN Xiulan
Travis Simpson
Bradford C. Bennett
Shawn D. Russell
Abstract：Objective To investigate the efficacy of a continuous symmetry index (CSI) in detecting the symmetry of sagittal lower limb joint angle at 3?demensional gait analysis of healthy youth female. Methods A total of 22 healthy female were included in the study.Gait analysis was conducted for two conditions: walk at com?fortable walking speed on barefoot (BF) and in neutral running shoe (NS). Continuous symmetry index was computed with the data of bilateral hip ,knee and ankle joint angle in the sagittal motion plane separately or holistically. Results CSIswere found increased in the sagittal plane of all lower limb joint angle both focally or holistically. There is no significant difference in CSI of hip joint angle ,knee joint angle and in the integrated CSI between the two conditions ,while CSI of ankle joint angle when walk barefoot was significantly lower than that of walk in neutral running shoe (BF:7.6±3.5 vs. NS 9.5±2.8,P=0.013). Conclusion Asymmetry lies in the sagittal motion plane of lower limb joint angles. CSI is a potent tool for the detection of gait symmetry.
Keywords：SymmetryContinuous symmetry index3-dimensional gait analysisBiomechanics
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 87-91 )