Results 31 to 40 of about 531,488 (321)

Online Reinforcement Learning Control for the Personalization of a Robotic Knee Prosthesis

open access: yesIEEE Transactions on Cybernetics, 2020
Robotic prostheses deliver greater function than passive prostheses, but we face the challenge of tuning a large number of control parameters in order to personalize the device for individual amputee users.
Yue Wen   +4 more
semanticscholar   +1 more source

Formation of buckling resistance in a transfemoral prosthesis

open access: yesВестник медицинского института «Реавиз»: Реабилитация, врач и здоровье, 2022
Introduction. The principles of construction of the knee joint in the transfemoral prosthesis are considered. The design of the knee joint in the transfemoral prosthesis with an original mechanism for ensuring buckling resistance in the prosthesis is ...
G. N. Burov   +4 more
doaj   +1 more source

The use of the constrained prosthesis in the difficult primary knee arthroplasty [PDF]

open access: yesThe Moldovan Medical Journal, 2021
Background: The constrained knee prosthesis has the basic indication in revision arthroplasty, but the latest literature reveals that it takes place also in primary total knee arthroplasty in cases of knee osteoarthritis associated with major ...
Vitalie Iacubitchii   +2 more
doaj   +1 more source

Morphology characters of resected femoral and tibial surface in chinese population: intraoperative anthropometric study in patients at a tertiary hospital

open access: yesBMC Surgery, 2022
Backgrounds Mismatch between knee surface and prosthesis components is related to postoperative complications. Morphological differences between ethnicity and gender may affect prosthesis coverage.
Yiming Xu   +5 more
doaj   +1 more source

Effect of Increasing Assistance From a Powered Prosthesis on Weight-Bearing Symmetry, Effort, and Speed During Stand-Up in Individuals With Above-Knee Amputation

open access: yesIEEE Transactions on Neural Systems and Rehabilitation Engineering, 2023
After above-knee amputation, the missing biological knee and ankle are commonly replaced with a passive prosthesis, which cannot provide net-positive energy to assist the user.
Grace R. Hunt   +3 more
doaj   +1 more source

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

Robotic Knee Tracking Control to Mimic the Intact Human Knee Profile Based on Actor-critic Reinforcement Learning [PDF]

open access: yes, 2021
We address a state-of-the-art reinforcement learning (RL) control approach to automatically configure robotic prosthesis impedance parameters to enable end-to-end, continuous locomotion intended for transfemoral amputee subjects. Specifically, our actor-critic based RL provides tracking control of a robotic knee prosthesis to mimic the intact knee ...
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

Evaluation of the application value of a three-dimensional digital model of the knee in clinical practice

open access: yesJournal of International Medical Research, 2020
Objective To compare the knee shape and bone parameters between knee prosthesis products from overseas companies and a Chinese patient’s knee, and to apply the anatomical basis for Chinese knee prosthesis design.
Ajimu Keremu   +4 more
doaj   +1 more source

Modeling and Control of Knee-Ankle-Toe Active Transfemoral Prosthesis

open access: yesIEEE Access, 2020
The main joints of lower limb are hip, knee, ankle, and toe. Because of accidents or diseases, some people have to amputate. Wearing prosthesis can help them return to normal life.
Yawei Chen   +4 more
doaj   +1 more source

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