Design of an adjustable stance-control knee-ankle-foot orthosis for pediatric population

2019 ◽  
Vol 12 (3) ◽  
pp. 305-312
Author(s):  
Lucas F. Gerez ◽  
André F.C. Vieira
Keyword(s):  
Pediatric Population ◽  
Ankle Foot Orthosis ◽  
Stance Control ◽  
Control Knee ◽  
Foot Orthosis

The effect of a knee ankle foot orthosis incorporating an active knee mechanism on gait of a person with poliomyelitis

2013 ◽  
Vol 37 (5) ◽  
pp. 411-414 ◽  
Author(s):  
Mokhtar Arazpour ◽  
Ahmad Chitsazan ◽  
Monireh Ahmadi Bani ◽  
Gholamreza Rouhi ◽  
Farhad Tabatabai Ghomshe ◽  
...  
Keyword(s):  
Knee Flexion ◽  
Walking Speed ◽  
Horizontal Displacement ◽  
Step Length ◽  
Knee Extension ◽  
Knee Joints ◽  
Ankle Foot Orthosis ◽  
Stance Control ◽  
Control Knee ◽  
Foot Orthosis

Background: The aim of this case study was to identify the effect of a powered stance control knee ankle foot orthosis on the kinematics and temporospatial parameters of walking by a person with poliomyelitis when compared to a knee ankle foot orthosis. Case description and methods: A knee ankle foot orthosis was initially manufactured by incorporating drop lock knee joints and custom molded ankle foot orthoses and fitted to a person with poliomyelitis. The orthosis was then adapted by adding electrically activated powered knee joints to provide knee extension torque during stance and also flexion torque in swing phase. Lower limb kinematic and kinetic data plus data for temporospatial parameters were acquired from three test walks using each orthosis. Findings and outcomes: Walking speed, step length, and vertical and horizontal displacement of the pelvis decreased when walking with the powered stance control knee ankle foot orthosis compared to the knee ankle foot orthosis. When using the powered stance control knee ankle foot orthosis, the knee flexion achieved during swing and also the overall pattern of walking more closely matched that of normal human walking. The reduced walking speed may have caused the smaller compensatory motions detected when the powered stance control knee ankle foot orthosis was used. Conclusion: The new powered SCKAFO facilitated controlled knee flexion and extension during ambulation for a volunteer poliomyelitis person. Clinical relevance The powered stance control knee ankle foot orthosis has the potential to improve knee joint kinematics in persons with poliomyelitis when ambulating.

Design and Evaluation of a Stance-Control Knee-Ankle-Foot Orthosis Knee Joint

2006 ◽  
Vol 14 (3) ◽  
pp. 361-369 ◽  
Author(s):  
T. Yakimovich ◽  
J. Kofman ◽  
E.D. Lemaire
Keyword(s):  
Knee Joint ◽  
Ankle Foot Orthosis ◽  
Stance Control ◽  
Control Knee ◽  
Foot Orthosis

Design and Implementation of a Novel Semi-Active Hybrid Unilateral Stance Control Knee Ankle Foot Orthosis

2018 ◽  
Author(s):  
J. Gil ◽  
M.C. Sanchez-Villamanan ◽  
J. Gomez ◽  
A. Ortiz ◽  
J.L. Pons ◽  
...  
Keyword(s):  
Ankle Foot Orthosis ◽  
Design And Implementation ◽  
Stance Control ◽  
Control Knee ◽  
Foot Orthosis

Design of a New Knee Orthosis Locking System

2013 ◽  
Author(s):  
Pedro Moreira ◽  
Pedro Ramôa ◽  
Paulo Flores
Keyword(s):  
Human Gait ◽  
Ankle Foot Orthosis ◽  
Actuation System ◽  
Locking Mechanism ◽  
Stance Control ◽  
Physical Prototype ◽  
Control Knee ◽  
Knee Orthosis ◽  
Foot Orthosis ◽  
Femoris Muscle

The main goal of this work is to present the design of a new locking system for a Stance Control Knee Ankle Foot Orthosis (SCKAFO). The purpose of this solution is to support patients with gait disorders, namely patients with muscular weakness and dystrophy in quadriceps femoris muscle group. The proposed system is able to perform two distinct functions. The first one deals with the locking situation of the orthosis during the stance phase of human gait, in which contact between the foot and the ground occurs. The second function is associated with unlocking situation of the orthosis during the swing phase, in order to allow for the flexion motion of the knee. Thus, in the context of the present work sensors, are used to detect the key phases that characterize the human gait, allowing for the correct system performance. These sensors are placed into anatomical relevant locations and allow the evaluation of the joint angles and accelerations during human gait. Subsequently, the information collected by these sensors is interpreted by a microcontroller that controls the actuation system in order to lock or unlock the knee orthosis locking mechanism. Finally, a physical prototype was built and tested in a traditional knee orthosis, which will allow for its validation. From the preliminary results, it can be stated that the model proposed here differs from the available commercial solutions in the measure that it is dynamic and does not require foot sensors to determine the human gait phases to define the lock/unlock.

scholarly journals The effect of 'Sensor Lock', a knee–ankle–foot orthosis with an electromechanical stance control knee joint, on walking parameters and gait symmetry of subjects with quadriceps weakness: a pilot study

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Farnoosh Asadi ◽  
Mokhtar Arazpour ◽  
Monireh Ahmadi Bani ◽  
Gholamreza Aminian ◽  
Reza Vahab Kashani
Keyword(s):  
Pilot Study ◽  
Knee Joint ◽  
Gait Symmetry ◽  
Quadriceps Weakness ◽  
Ankle Foot Orthosis ◽  
Stance Control ◽  
Control Knee ◽  
Foot Orthosis

Preliminary kinematic evaluation of a new stance-control knee–ankle–foot orthosis

2006 ◽  
Vol 21 (10) ◽  
pp. 1081-1089 ◽  
Author(s):  
Terris Yakimovich ◽  
Edward D. Lemaire ◽  
Jonathan Kofman
Keyword(s):  
Ankle Foot Orthosis ◽  
Stance Control ◽  
Control Knee ◽  
Kinematic Evaluation ◽  
Foot Orthosis
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