Abstract

The study selects 50 senior people at the age of more than 60 and 30 young people at the age of 18-26 as test group and control group respectively, including people with mild foot disease, such as flat feet, pes cavus and hallux valgus. Questionnaire survey of effective data volume and observation are used to understand common problems of the foot in the elderly, collect shape photos of the foot in senior people, and subjectively analyze their foot shape and gait characteristics. Footscan plate plantar pressure test system and Kistler 3D force platform are used to objectively analyze plantar pressure distribution and gait characteristics of subjects. According to study results: Toe-out gait causes the plantar pressure to move to the forefoot, therefore, the forefoot is the part with the highest risk of injury of foot in toe-out gait, especially the first toe, causing hallux valgus and various foot problems. The toe-out gait causes increase of gait cycle, slow walking speed, poor buffer effect, and may bring pain in feet and lower extremities, thus affecting the dynamic characteristics of the entire lower limb.

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