Effects of Suspension System on Lower Limb Biomechanics During Squatting in Transtibial Prosthetic Users; Case series
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Issued Date
2025-01-01
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Scopus ID
2-s2.0-105015526452
Journal Title
Bmeicon 2025 17th Biomedical Engineering International Conference
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SCOPUS
Bibliographic Citation
Bmeicon 2025 17th Biomedical Engineering International Conference (2025)
Suggested Citation
Phetkhuea S., Samala M., Manupibul U. Effects of Suspension System on Lower Limb Biomechanics During Squatting in Transtibial Prosthetic Users; Case series. Bmeicon 2025 17th Biomedical Engineering International Conference (2025). doi:10.1109/BMEICON66226.2025.11113755 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/112079
Title
Effects of Suspension System on Lower Limb Biomechanics During Squatting in Transtibial Prosthetic Users; Case series
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Abstract
Squatting is one of the movements in activities of daily living (ADLs). It requires a combination of hip, knee, and ankle movement to perform. There are challenges for transtibial prosthetic users to squat. It often results in asymmetrical movement and increases weight on the intact limb. These complications may lead to secondary health problems such as knee osteoarthritis and low back pain. The suspension system is part of the components that function to connect the residual limb and prosthetic leg close to the knee joint, but it can restrict the movement of the knee joint. This study aims to determine how suspension systems influence the movement and load of lower limbs in different types of suspension. This also explores the role of heel lifts in compensating for ankle stiffness and enhancing squatting performance. Two unilateral transtibial prosthetic users are recruited. Custom design of prostheses is prepared with three suspension systems: cuff strap, pin/lock, and suction systems. Participants wear each intervention and perform maximum bodyweight squats with and without heel lifts, using a three-dimensional motion capture system for data collection. Parameters analysis included range of motion, joint moments in the sagittal and frontal planes, vertical ground reaction forces (GRFs). The results are expected to reveal which suspension type can minimize asymmetrical movement and improve load on both sides of the leg. Ultimately, the results of this research can be applied to improving the design of a prosthesis for optimal function and safety during squats in daily activities.