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Mechanisms and component design of prosthetic knees : a review from a biomechanical function perspective

Liang, W; Qian, Z; Chen, W; Song, H; Cao, Y; Wei, G; Ren, L; Wang, K; Ren, L

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Authors

W Liang

Z Qian

W Chen

H Song

Y Cao

L Ren

K Wang

L Ren



Abstract

Prosthetic knees are state-of-the-art medical devices that use mechanical mechanisms and components to simulate the normal biological knee function for individuals with transfemoral amputation. A large variety of complicated mechanical mechanisms and components have been employed; however, they lack clear relevance to the walking biomechanics of users in the design process. This article aims to bridge this knowledge gap by providing a review of prosthetic knees from a biomechanical perspective and includes stance stability, early-stance flexion and swing resistance, which directly relate the mechanical mechanisms to the perceived walking performance, i.e., fall avoidance, shock absorption, and gait symmetry. The prescription criteria and selection of prosthetic knees depend on the interaction between the user and prosthesis, which includes five functional levels from K0 to K4. Misunderstood functions and the improper adjustment of knee prostheses may lead to reduced stability, restricted stance flexion, and unnatural gait for users. Our review identifies current commercial and recent studied prosthetic knees to provide a new paradigm for prosthetic knee analysis and facilitates the standardization and optimization of prosthetic knee design. This may also enable the design of functional mechanisms and components tailored to regaining lost functions of a specific person, hence providing individualized product design.

Citation

Liang, W., Qian, Z., Chen, W., Song, H., Cao, Y., Wei, G., …Ren, L. (2022). Mechanisms and component design of prosthetic knees : a review from a biomechanical function perspective. Frontiers in Bioengineering and Biotechnology, 10, https://doi.org/10.3389/fbioe.2022.950110

Journal Article Type Article
Acceptance Date Aug 17, 2022
Online Publication Date Sep 15, 2022
Publication Date Sep 15, 2022
Deposit Date Oct 10, 2022
Publicly Available Date Oct 10, 2022
Journal Frontiers in Bioengineering and Biotechnology
Publisher Frontiers Media
Volume 10
DOI https://doi.org/10.3389/fbioe.2022.950110
Publisher URL https://doi.org/10.3389/fbioe.2022.950110

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