Results 61 to 70 of about 565,037 (392)

Effects of extended stance time on a powered knee prosthesis and gait symmetry on the lateral control of balance during walking in individuals with unilateral amputation

open access: yesJournal of NeuroEngineering and Rehabilitation, 2019
Individuals with lower limb amputation commonly exhibit large gait asymmetries that are associated with secondary health issues. It has been shown that they are capable of attaining improved temporal and propulsive symmetry when walking with a powered ...
Andrea Brandt, H. Huang
semanticscholar   +1 more source

Powered knee and ankle prosthesis with indirect volitional swing control enables level-ground walking and crossing over obstacles

open access: yesScience Robotics, 2020
Control of prosthesis swing trajectory enables individuals to voluntarily change foot clearance to traverse obstacles. Powered prostheses aim to mimic the missing biological limb with controllers that are finely tuned to replicate the nominal gait ...
Joel Mendez   +3 more
semanticscholar   +1 more source

A circumferentially flanged tibial tray minimizes bone-tray shear micromotion [PDF]

open access: yes, 2005
Aseptic loosening of the tibial component is the major complication of total knee arthroplasty. There is an association between early excessive shear micromotion between the bone and the tray of the tibial component and late aseptic loosening.
Barker, D.S., Ryd, L., Tanner, K.E.
core   +1 more source

Structural Simulation of a Bone-Prosthesis System of the Knee Joint

open access: yesSensors, 2008
In surgical knee replacement, the damaged knee joint is replaced with artificial prostheses. An accurate clinical evaluation must be carried out before applying knee prostheses to ensure optimal outcome from surgical operations and to reduce the ...
Aivars Zemitis   +7 more
doaj   +1 more source

Powered Knee and Ankle Prosthesis With Adaptive Control Enables Climbing Stairs With Different Stair Heights, Cadences, and Gait Patterns

open access: yesIEEE Transactions on robotics, 2020
Powered prostheses can enable individuals with above-knee amputations to ascend stairs step-over-step. To accomplish this task, available stair ascent controllers impose a predefined joint impedance behavior or follow a preprogramed position trajectory ...
Sarah Hood, Lukas Gabert, T. Lenzi
semanticscholar   +1 more source

Total Knee Arthroplasty for Chronic Anterior Knee Dislocation

open access: yesClinical Medicine Insights: Case Reports, 2018
Background: The occurrence of chronic knee dislocation is rare. To the best of our knowledge, total knee arthroplasty for treatment of chronic anterior knee dislocation has not been reported. Method: This report describes 3 cases of chronic anterior knee
Mahmoud Jabalameli   +4 more
doaj   +1 more source

Biomechanics of the through-knee prosthesis [PDF]

open access: yesProsthetics & Orthotics International, 1983
The biomechanics of the through-knee prosthesis is considered in detail and comparisons made with the above-knee case. Socket shape and suspension are discussed and comment offered on knee function in both stance and swing phases.
openaire   +3 more sources

Bouncy Knee in a Semi-Automatic Knee Lock Prosthesis [PDF]

open access: yesProsthetics & Orthotics International, 1986
The Bouncy Knee concept has previously proved of value when fitted to stabilised knee units of active amputees. The stance phase flex-extend action afforded by a Bouncy Knee increased the symmetry of gait and also gave better tolerance to slopes and uneven ground.
L. D. Fisher, M. Lord
openaire   +3 more sources

Design and Control of a New Biomimetic Transfemoral Knee Prosthesis Using an Echo-Control Scheme

open access: yesJournal of Healthcare Engineering, 2018
Passive knee prostheses require a significant amount of additional metabolic energy to carry out a gait cycle, therefore affecting the natural human walk performance.
Mario G Bernal-Torres   +2 more
semanticscholar   +1 more source

Estimation of Loosening of Knee Joint Prosthesis [PDF]

open access: yes, 1997
Knee replacement arthroplasty is indicated for the patient with advanced knee pain, knee deformation, and knee functional disorder. The aim of this study was to estimate loosening after a knee replacement arthroplasty.
Ohshima, Masakazu, Oka, Hisao
core   +1 more source

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