Investigating Auto Adjusting Dynamic AFO

NCT ID: NCT04623853

Last Updated: 2023-04-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

22 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-11-30

Study Completion Date

2024-12-31

Brief Summary

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Offloading Ankle Foot Orthoses (AFOs) are devices designed for people following lower-limb reconstruction to restore mobility by reducing mechanical loading through the injury site and redistributing it proximally. While they perform well for some users, their current form limits full functional potential and may put joints proximal to the injury at risk of long-term damage. This study is directed toward designing and testing a lightweight, variable stiffness, dynamic brace that can adjust in response to user activity.

Detailed Description

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Conditions

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Lower Limb; Fusion, Congenital Lower Limb Fracture Ankle Foot Injury

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

NONE

Study Groups

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Aim 2

Participants will carry out a protocol comprised of treadmill walking in a laboratory setting while wearing the Dynamic AFO device.

Group Type EXPERIMENTAL

Variable Stiffness AFO

Intervention Type DEVICE

The Dynamic AFO is able to adjust in stiffness depending on activity.

Aim 3

Participants will be asked to take the Dynamic AFO home and wear the device for up to 4 weeks. The device will be set in either an adjustment-capable mode, or a "locked" mode that functions similar to their own orthotic--the order in which they are tested will be randomized.

Group Type EXPERIMENTAL

Variable Stiffness AFO

Intervention Type DEVICE

The Dynamic AFO is able to adjust in stiffness depending on activity.

Interventions

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Variable Stiffness AFO

The Dynamic AFO is able to adjust in stiffness depending on activity.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

-able to run continuously for 1 minute


* prescribed an offloading Ankle-Foot Orthosis (AFO) for walking/running
* Use prescribed offloading AFO at least 20 hours per week
* Prescribed AFO strut length of at least 200 mm
* Able to run continuously for 1 minute

Exclusion Criteria

* limited sensation in the lower limbs
* use an assistive device


* Unable to ambulate (walk/run) continuously with AFO for at least 1 minute
* Unable to sit, stand, or negotiate a step onto lab treadmill
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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United States Department of Defense

FED

Sponsor Role collaborator

University of Washington

OTHER

Sponsor Role lead

Responsible Party

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Joan Sanders

Professor: Engineering

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Joan E Sanders, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Washington

Locations

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University of Washington, Dept. of Bioengineering

Seattle, Washington, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Daniel Ballesteros, BS

Role: CONTACT

206-221-5873

Katheryn Allyn, CPO, LPO

Role: CONTACT

206-390-0228

Facility Contacts

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Daniel Ballesteros

Role: primary

206-221-5873

Other Identifiers

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STUDY00009120

Identifier Type: -

Identifier Source: org_study_id

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