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Related Concept Videos

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The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...
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The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
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Shoe-Type Walking Assist Device with Controllable Subtalar Joint Alignment at Heel Contact.

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    This study introduces a novel shoe-assisted walking device that controls subtalar joint motion during heel strike. The device aims to improve walking stability and quality of life for diverse age groups.

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    Area of Science:

    • Biomechanics
    • Robotics
    • Gerontology

    Background:

    • Subtalar joint instability can affect gait and quality of life in elderly and young individuals.
    • Current assistive devices often lack dynamic control over frontal plane joint motion during the gait cycle.

    Purpose of the Study:

    • To propose and evaluate a shoe-type walking assist device designed to control the subtalar joint's inversion/eversion angle during heel contact.
    • To improve long-term quality of life by promoting neutral subtalar joint alignment during gait.

    Main Methods:

    • Development of a novel shoe-type walking assist device with a dynamic heel mechanism.
    • Experimental comparison of lateral sway during stepping with and without the device in 5 healthy male subjects.
    • Focus on controlling the frontal plane rotation of the heel to influence subtalar joint alignment.

    Main Results:

    • The proposed mechanism dynamically rotates the heel in the frontal plane upon ground contact.
    • Demonstrated reduction in lateral sway during stepping movements when using the assistive device.
    • Effectiveness validated through comparative analysis of gait parameters in human subjects.

    Conclusions:

    • The shoe-type walking assist device shows potential for improving gait stability by controlling subtalar joint alignment.
    • This technology could enhance the quality of life for both elderly individuals and young healthy people by mitigating instability.
    • Further research is warranted to explore long-term benefits and applications across different populations.