Results 31 to 40 of about 2,023,994 (396)

An investigation into a locking mechanism designed for a gear-based knee joint prosthesis

open access: yesCogent Engineering, 2020
Background: The knee-locking mechanism in an above-knee prosthesis is crucially important to protect the prosthesis user from sudden falling down due to unexpected disturbance while standing upright.
C. X. Tong, M. S. H. Bhuiyan
doaj   +1 more source

Biomechanical Impacts of Toe Joint With Transfemoral Amputee Using a Powered Knee-Ankle Prosthesis

open access: yesFrontiers in Neurorobotics, 2022
Transfemoral amputees are currently forced to utilize energetically passive prostheses that provide little to no propulsive work. Among the several joints and muscles required for healthy walking, the ones most vital for push-off assistance include the ...
Shawanee' Patrick   +3 more
doaj   +1 more source

Effects of prosthetic design parameters on running performance of a unilateral transfemoral amputee

open access: yesJournal of Biomechanical Science and Engineering, 2021
Carbon fiber running-specific prostheses (RSPs) are widely used among lower-limb amputee runners. However, which prosthesis provides the best performance for runners remains unknown.
Cem GUZELBULUT   +3 more
doaj   +1 more source

A Piecewise Monotonic Gait Phase Estimation Model for Controlling a Powered Transfemoral Prosthesis in Various Locomotion Modes [PDF]

open access: yesin IEEE Robotics and Automation Letters, vol. 7, no. 4, pp. 9549-9556, Oct. 2022, 2022
Gait phase-based control is a trending research topic for walking-aid robots, especially robotic lower-limb prostheses. Gait phase estimation is a challenge for gait phase-based control. Previous researches used the integration or the differential of the human's thigh angle to estimate the gait phase, but accumulative measurement errors and noises can ...
arxiv   +1 more source

Virtual Testing Method of Human Knee Prosthesis

open access: yesInternational Journal of Engineering and Management Sciences, 2019
In the human knee joint, a degenerative wear of the joint can be formed, the common treatment of this disease is the total knee prosthesis geometry replacement and prosthesis implanting, the aim of our research is the study of the human knee joint with ...
Zehouani Kheireddine, István Oldal
doaj   +1 more source

Effects of Synovial Fluid Constituents on Friction between UHMWPE and CoCrMo

open access: yesTribology Online, 2020
In this study, the reciprocating pin-on-plate sliding test was conducted between ultra-high molecular weight polyethylene (UHMWPE) and CoCrMo alloy with test lubricants containing representative synovial fluid constituents, such as proteins, hyaluronic ...
Hironori Shinmori   +4 more
doaj   +1 more source

Mycobacterium tuberculosis prosthesis joint infection [PDF]

open access: yesPediatrics International, 2020
info:eu-repo/semantics ...
Andreia Fiúza Ribeiro   +5 more
openaire   +3 more sources

Calculation of wear (f.i. wear modulus) in the plastic cup of a hip joint prosthesis [PDF]

open access: yes, 1975
The wear equation is applied to the wear process in a hip joint prosthesis and a wear modulus is defined. The sliding distance, wear modulus, wear volume, wear area, contact angle and the maximum normal stress were calculated and the theoretical ...
Ligterink, D.J.
core   +3 more sources

A lightweight robotic leg prosthesis replicating the biomechanics of the knee, ankle, and toe joint

open access: yesScience Robotics, 2022
Robotic leg prostheses promise to improve the mobility and quality of life of millions of individuals with lower-limb amputations by imitating the biomechanics of the missing biological leg. Unfortunately, existing powered prostheses are much heavier and
M. Tran   +3 more
semanticscholar   +1 more source

Intraoperative sensor technology quantifies inter-prosthesis pressure for predicting lower limb alignment after Oxford unicompartmental knee arthroplasty

open access: yesFrontiers in Bioengineering and Biotechnology, 2023
Purpose: The aim of this study is to quantify inter-prosthetic pressures at different knee angles in Oxford unicompartmental knee arthroplasty (OUKA) and its correlation with postoperative lower limb alignment.Methods: This study included 101 patients ...
Juncheng Ge   +9 more
doaj   +1 more source

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