The Study Of Movement Function On Toe-out Gait

With the growth of age,more and more attention has been paid to the populations of toe-out gait.The toe-out gait will directly affect the pace,and when the toe out degree is serious,it will influence on normal walking and causing pain and toe deformities.The design of defects or the shoe boots which is not meet the characteristics of foot will cause foot disease and deformity.Through three aspects of study,the subjective and objective results were combined to explore the mechanics of movement function of the toe-out gait.It provides the theoretical basis for design of toe-out gait shoes.Firstly,the survey of questionnaire was conducted in the toe-out gait.Through the investigation of foot deformation,perception of wearing shoes and footwear demand,the subjective analysis on foot deformation and shoe characteristics was carried out.Secondly,the foot type of toe-out gait was implemented.The length,width,girth and height of foot were measured,so as to obtain the foot deformation of toe-out gait.Next,the study on foot biomechanics was operated on the toe-out gait.The plantar pressure of the toe-out gait was obtained using Footscan7.0 flat plantar pressure test system.The gait characteristics of the toe-out gait were obtained using Kistler three-dimensional force platform test system.The sEMG of the muscles in the lower limbs of the toe-out gait were obtained using Biovision8 wireless surface electromyography system.Finally,using the data analysis software,the data will be analyzed between experimental group of toe-out gait and control group of normal gait.Meanwhile,the integrated analysis between subjective survey and objective experiment was carried out.The foot deformation and movement characteristics in the toe-out gait will be obtained.The results showed that:(1)The toe-out gait was mainly due to acquired habits and the habit of wearing shoes caused.The contact area,the percentage of contact area,the peak pressure and force-time integral were increased in the medial foot position.The(2)percentage of contact area was greater than other partitions.Besides,the waist width of footprint and outline increase,and its indicted that toe-out gait present the phenomenon of low arch or flatfoot at arch.(3)The foot types of toe-out gait showed that the foot length,the bursting point length of first metatarsophalangeal,the length of bending point,the footprint width of fifth metatarsophalangeal,the contour width of heel heart and waist width increased.The foot morphology of left-right foot was basic symmetry on the toe-out gait.(3)The maximum force value in vertical direction and the force of walking direction in propulsion phase with toe-out gait were less than normal gait.While the maximum force in barking phase increased on the walking direction,its shown that the toe-out gait are lack of strength during the walking.(4)The peak pressure of each partition increased on the toe-out gait,and the maximum peak pressure was the third metatarsophalangeal position.The force-time pressure and contact area were enlargement in the position of metatarsophalangeal,medial foot and heel.Meanwhile,the maximum force was accretion in the walking direction.Those results showed that the foot load increased,which could cause the foot fatigue and injury.After a the long time walking,the position of foot sole and heel prone to discomfort at the foot,and the position of abrasion and deformation is mainly reflected in the heel and arch of forefoot at the shoes and boots.(5)In the same period,the electromyography data of tibialis anterior muscle,peroneal longus muscle and lateral gastrocnemius muscle were higher than normal gait in the locality muscle of toe-out gait.With the continuous growth of gait time,the calf muscle force of toe-out gait were basically showing a decreasing trend and its suggests the muscle of toe-out gait were easy to appear fatigue phenomenon.