Biomechanics Characteristic Of The Of Gait With Genu Varus

Objectives: Genu varus is the commonest injury in the sports, but studies on gait of genu varus are relatively seldom. This study from gait kinematics and dynamics characteristics of genu varus,Basic theory and experimental basis were provided from the systemetic analysis Biomechanical gait characteristics of the genu varus,was done for injury of genu varus prevention and rehabilitation.Methods:Study of genu varus to select subject 13, according to the genu varus Group subjects ’ age, height, weight and training projects, and lower limb morphology, 13 subjects without genu varus were selected. Using Vicon-MX infrared motion-capture system, Kistler force measurement, gait analysis of Zebris treadmill FAI FDM-TDS systems ang gait analysis and balance of win-pod genu varus group and non genu varus groups for the most comfortable pace of walking test and acquisition phase, stride characteristics,step angle,joint angles, foot-ground contact forces, foot biomechanical parameters, such as pressure. Genu varus Group and the non genu varus group comparison of the ipsilateral lower extremity parameters, using independent samples t-test.Left leg and right leg comparison of lower extremity, using paired t-test.Results:①The difference in the each gait index between left leg and right leg has no statistic significance(P> 0.05); ②The differences in the each phases between genu varus group and non-group was not statistically significant(P> 0.05); ③Step angle was significantly lower than non genu varus(P<0.05),the difference in the Step width, step,strde between two groups were not statistically significant(P> 0.05);④In the support phase,the difference in the the maximum angle of knee varus between the two groups was statistically significant(P <0.05),the differences maximum varus angle corresponding ankle varus angle was statistically significant(P <0.05),the other Indicators has no statistic significance;⑤Medial plantar ratio of genu varus group were higher than the non genu varus group, and the difference between the two indicators was statistically significant(P<0.05);Lateral plantar was less than non genu varum,and the difference between the two indices was statistically significant(P<0.05);Lateral variability under the dynamic testing was higher than non genu varus(P<0.05);⑥The difference in the force of the lower limb valley force / body weight, in Y-direction between the genu varus group and the non genu varus group was statistically significant(P <0.05); the other foot contact force parameters between the two groups has no statistic significance(P> 0.05)Conclusions:①In the support phase,maximum varus angle increased significantly with step angle decreases of genu varus shows that genu varus change the normal gait;②For genu varus groups,which was plantar medial force increased, the outside force reduced,and inward force value in Y-direction significantly increased,it shows that genu varus change inward force;③When the knee varus angle reaches the maximum,ankle appeares valgus for genu varus;④In the walking,the lateral variability of gait line vary widely,it will affects the body balance.