The Gait Analysis Of Asymptomatic Knee Varus People

Object: To perform gait analysis on asymptomatic knee varus people regarding daily activities.Methods: Gait analysis was performed on 10 asymptomatic genu varus subjects and 10 normal knee joint subjects.Using the standard lower limb model in gait analysis,the subjects were asked to perform normal walking and walking with different stride.The immediate Marker point signal was collected,and the Vicon-MX software was used to reconstruct the gait model and calculate the original data.The C3 d data were then imported into the VISUAL 3D software for further processing,and final parameters regarding kinetics and kinematics were distributed into Origin software for comparison.Results: 1.Subjects with asymptomatic varus showed slightly adduction in standing phase,while the amplitude of abduction was decreased in swaying phase.The coronal plane revealed no apparent instability.2.There was no obvious shortening of the standing phase in subjects with asymptomatic genu varus,accounting for 60% of the gait cycle.3.The change of the stride mainly caused the change of the flexion angle.Long stride waling could increase the flexion of the standing phase while reduce the stride could reduce flexion in both swing phase and standing phase.There was no obvious change in coronal plane.4.By increasing stride length,moments on sagittal plane could be significantly increased while it was slightly increased on coronal plane.The amplitude of moment increase on coronal plane was more obvious in the varus group.By reducing the stride,the sagittal moment was reduced.The second peak on coronal plane was obviously reduced and the moment pattern was changed into a flat curve.The change of the stride did not cause the standing phase change.5.The biggest moment of different stride walking was generated in the anterior-posterior direction.Conclusion: 1.Gait analysis is a credible and feasible method for mechanical study regarding different cohorts and activities.2.Asymptomatic varus subjects have unique gait patterns compared with the normal people.3.Long stride walking is not conducive to patients with knee varus.Proper shortening of stride length helps reduce knee joint moment.