Gait of stance control orthosis users: The Dynamic Knee Brace System

@article{Irby2005GaitOS,
  title={Gait of stance control orthosis users: The Dynamic Knee Brace System},
  author={Steven E. Irby and Kathie A. Bernhardt and Kenton R. Kaufman},
  journal={Prosthetics and Orthotics International},
  year={2005},
  volume={29},
  pages={269 - 282}
}
Individuals with weak or absent quadriceps who wish to walk independently are prescribed knee-ankle-foot orthoses (KAFOs). New stance control orthosis (SCO) designs automatically release the knee to allow swing phase flexion and extension while still locking the joint during stance. Twenty-one participants were fitted unilaterally with the Dynamic Knee Brace System (DKBS), a non-commercial SCO. Thirteen subjects were experienced KAFO users (average 28 ± 18 years of experience) while eight were… Expand
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References

SHOWING 1-10 OF 37 REFERENCES
Preliminary Evidence for Effectiveness of a Stance Control Orthosis
TLDR
The subjects used a more symmetric, more aesthetic walking pattern, maneuvered over and around obstacles more easily, and seemed to walk more efficiently when wearing the SCOKJ® than when wearing a KAFO with the knee locked in extension. Expand
Energy‐Efficient Knee‐Ankle-Foot Orthosis: A Case Study
TLDR
The results of the study show that a KAFO design that allows free-knee motion during swing is effective in lowering the energy required for walking. Expand
Performance specification for lower limb orthotic devices.
TLDR
It is possible to estimate the loads transmitted by an orthosis using established gait analysis procedures without the need for load measurement transducers and there is now a need to collect a larger representative dataset and to perform validation studies with transducers. Expand
Knee lock device for knee ankle orthoses for spinal cord injured patients: an evaluation.
TLDR
The effect of a specially designed knee lock in a knee ankle orthosis was studied in 2 able-bodied volunteers and in patients with spinal cord lesions to improve gait pattern and reduce oxygen consumption more than a standard knee lock which keeps the knee straight throughout the entire gait cycle. Expand
Knee lock device for knee ankle orthoses for spinal cord injured patients: an evaluation.
TLDR
The effect of a specially designed knee lock in a knee ankle orthosis was studied in able-bodied volunteers and in patients with spinal cord lesions to improve gait pattern and reduce oxygen consumption more than a standard knee lock which keeps the knee straight throughout the entire gait cycle. Expand
Newly designed computer controlled knee-ankle-foot orthosis (Intelligent Orthosis)
TLDR
Even in patients with muscle weakness of the quadriceps, control of the knee joint using the Intelligent Orthosis resulted in a more smooth gait with low muscle discharge. Expand
An automatic hinge system for leg orthoses
TLDR
A new automatic hinge system for leg orthoses, which provides knee stability in stance, and allows knee-flexion during swing, and proves to satisfy the patients allowing them to walk without a knee-lock system. Expand
Optimization and application of a wrap-spring clutch to a dynamic knee-ankle-foot orthosis.
A dynamic knee-brace system (DKBS) has been designed which provides stance phase stability and swing phase freedom. A wrap-spring clutch controls knee flexion. Clutch optimization was performedExpand
Repeatability of kinematic, kinetic, and electromyographic data in normal adult gait
TLDR
The results demonstrate that with the subjects walking at their natural or preferred spped, the gait variables are quite repeatable, and suggest that it may be reasonable to base significant clinical decisions on the results of a single gait evaluation. Expand
Automatic control design for a dynamic knee-brace system.
A self-contained electronically controlled dynamic knee-brace system (DKBS) has been designed and tested which allows knee flexion during swing phase, but restricts flexion during the stance phase ofExpand
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