- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05209347
Custom Dynamic Orthoses to Reduce Articular Contact Stress (PRMRP FPA CT)
Study Overview
Status
Intervention / Treatment
Detailed Description
The primary purpose of this line of research is to investigate the effects of carbon fiber custom dynamic orthosis (CDO) use on forces and contact stress at the ankle, with the goal of reducing the development of post traumatic osteoarthritis (PTOA). Research suggests that PTO develops, in part, due to increased ankle contact stress following fracture. It is expected that reducing articular contact stress has the potential to delay or prevent PTOA development. CDOs have been shown to significantly improve function after extremity injury, and show promise for offloading the injured ankle joint after severe lower extremity injuries. Therefore, the proposed effort is designed to evaluate CDOs effects on forces and articular contact stress at the ankle.
Adult participants who have sustained a traumatic ankle fracture of the tibial pilon will be evaluated while wearing two CDOs, with a primary dependent measure of ankle joint contact stress. Following consent and enrollment weight bearing computerized tomography (CT) images will be collected and used to determine the geometry of the joint, and the articular contact stress using discrete element analysis.
Participants will be cast and fit for two CDOs. Participants will be blinded to the design variation of each device and will only know them as CDO-A or CDO-B. Testing will be completed under 3 conditions: No-CDO, CDO-A, CDO-B, with each bracing condition (A/B) representing a different CDO. Physical performance measures will incorporate tests of agility, speed, and lower limb power to ensure that the CDOs do not negatively affect physical function. Questionnaires will be used to evaluate participants' current and desired activity level, pain with and without using a CDO, satisfaction with the study CDOs, perception of comfort and smoothness between CDOs, and preference between CDOs. Semi-structured interviews will be completed to fully capture the participant's perspective with each study CDO. Lower limb forces and motion will be assessed using a computerized motion capture system and force plates embedded in the floor. Forces between the foot and CDO footplate will be measured using force sensing insoles, and muscle activity data will be collected using wireless surface electromyography sensors. Each CDO will be mechanically tested, and participant demographic and anthropometric data will be recorded.
Study Type
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Jason M Wilken, PT, PhD
- Phone Number: 3193356857
- Email: jason-wilken@uiowa.edu
Study Contact Backup
- Name: Kirsten M Anderson, BSE
- Phone Number: 3193530431
- Email: kirsten-m-anderson@uiowa.edu
Study Locations
-
-
Iowa
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Iowa City, Iowa, United States, 52241
- University of Iowa
-
Contact:
- Jason M Wilken, PT, PhD
- Phone Number: 3193356857
- Email: jason-wilken@uiowa.edu
-
Contact:
- Kirsten M Anderson, BSE
- Phone Number: 3193530431
- Email: kirsten-m-anderson@uiowa.edu
-
Sub-Investigator:
- Molly Pacha, MS, ATC, LAT
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Sub-Investigator:
- Michael C Willey, MD
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Sub-Investigator:
- Jeff Palmer, CPO, LPO
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Sub-Investigator:
- Donald D Anderson, PhD
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Principal Investigator:
- Jason M Wilken, PT, PhD
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Sub-Investigator:
- Cesar De Cesar Netto, MD
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Sub-Investigator:
- Matthew Karam, MD
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Sub-Investigator:
- J Lawrence Marsh, MD
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Between the ages of 18 and 65
- Sustained unilateral fracture of the tibial pilon
- The fracture has completely healed
- Ability to walk 50 feet without use of an assistive device (cane, crutch, etc.)
- Ability to walk at a slow to moderate pace
- Shoe size between women's 8 and 13.5 or men's 6.5 and 12
- Ability to read and write in English and provide written informed consent
- Individuals with elevated contact stress according to model generated using standing CT images (will be answered after completing visit one)
Exclusion Criteria:
- Pain > 6/10 while walking
- Increase in pain during testing of 3/10 or greater
- Neurologic, musculoskeletal (including bilateral fractures) or other condition limiting function of the contralateral extremity
- Medical or psychological condition that would preclude functional testing (ex. moderate or severe brain injury, stroke, heart disease)
- Wounds to the calf that would prevent CDO fitting
- Fractures secondary to neuropathy or severe osteopenia
- Classification as non-ambulatory
- Previous fractures near the tibial pilon on the involved limb
- Surgery on involved limb anticipated in the next 6 months
- Requirement of a knee stabilizing device (i.e. KAFO, KO…) to perform daily activities
- Visual or hearing impairments that limit walking ability or limit the ability to comply with instructions given during testing
- BMI greater than 40
- Pregnancy- Per participant self-report. Due to the expected small number of pregnant individuals and resulting inability to account for its effect on resulting outcomes, participants will be withdrawn from the study.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
No Intervention: NoCDO
Participants will be evaluated without a CDO
|
|
Experimental: CDO-A
The first study CDO will be designated CDO-A
|
The carbon fiber custom dynamic orthosis will consist of a semi-rigid foot plate, a posterior carbon fiber strut, and a proximal cuff below the knee.
Other Names:
|
Experimental: CDO-B
The second study CDO will be designated CDO-B
|
The carbon fiber custom dynamic orthosis will consist of a semi-rigid foot plate, a posterior carbon fiber strut, and a proximal cuff below the knee.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Numerical Pain Rating Scale
Time Frame: Baseline
|
Pain will be assessed using a standard 11-point numerical pain rating scale, in which 0 = no pain and 10 = worst pain imaginable.
|
Baseline
|
Joint Contact Stress Exposure (Model estimated)
Time Frame: Baseline
|
Joint contact stress exposure (MPA-s/gait cycle) will be estimated using a participant specific musculoskeletal model.
|
Baseline
|
Participant Device Preference
Time Frame: Baseline
|
The participant will rank order their preference for their standard of care device (if applicable), NoCDO, CDO-A, CDO-B on a questionnaire.
|
Baseline
|
Peak Plantar Force (total foot)
Time Frame: Baseline
|
Plantar forces (N) will be measured across the forefoot (100% of sensor) as participants walk without a CDO and with each CDO.
|
Baseline
|
Plantar Force Impulse (total foot)
Time Frame: Baseline
|
Plantar force impulse (Ns) across the forefoot (100% of sensor) will be calculated using the integral of the force over the stance phase as participants walk without a CDO and with each CDO.
|
Baseline
|
Peak Plantar Force (forefoot)
Time Frame: Baseline
|
Plantar forces (N) will be measured across the forefoot (distal 40% of sensor) as participants walk without a CDO and with each CDO.
|
Baseline
|
Plantar Force Impulse (forefoot)
Time Frame: Baseline
|
Plantar force impulse (Ns) across the forefoot (distal 40% of sensor) will be calculated using the integral of the force over the stance phase as participants walk without a CDO and with each CDO.
|
Baseline
|
Peak Plantar Force (midfoot)
Time Frame: Baseline
|
Plantar forces (N) will be measured across the forefoot (middle 30% of sensor) as participants walk without a CDO and with each CDO.
|
Baseline
|
Plantar Force Impulse (midfoot)
Time Frame: Baseline
|
Plantar force impulse (Ns) across the forefoot (middle 30% of sensor) will be calculated using the integral of the force over the stance phase as participants walk without a CDO and with each CDO.
|
Baseline
|
Peak Plantar Force (hindfoot)
Time Frame: Baseline
|
Plantar forces (N) will be measured across the forefoot (proximal 30% of sensor) as participants walk without a CDO and with each CDO.
|
Baseline
|
Plantar Force Impulse (hindfoot)
Time Frame: Baseline
|
Plantar force impulse (Ns) across the forefoot (proximal 30% of sensor) will be calculated using the integral of the force over the stance phase as participants walk without a CDO and with each CDO.
|
Baseline
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Four Square Step Test (4SST)
Time Frame: Baseline
|
The 4SST (s) is a standardized timed test of balance and agility.
|
Baseline
|
Sit to Stand 5 Times (STS5)
Time Frame: Baseline
|
STS5 (s) is a well-established timed measure of lower limb muscle strength and power.
Participants are instructed to stand up and sit down 5 times as fast as possible.
|
Baseline
|
Ankle Range of Motion
Time Frame: Baseline
|
Ankle range of motion (degrees) during gait.
|
Baseline
|
Peak Ankle Moment
Time Frame: Baseline
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Peak ankle moment (Nm/kg) during gait.
|
Baseline
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Peak Ankle Power
Time Frame: Baseline
|
Peak ankle power (W/kg) during gait.
|
Baseline
|
The Orthotics Prosthetics Users' Survey (OPUS)
Time Frame: Baseline
|
Satisfaction with device will be assessed using the Orthotics Prosthetics Users' Survey Satisfaction With Device Score (11-55).
Lower scores indicate a better outcome.
|
Baseline
|
Modified Socket Comfort Score (Comfort)
Time Frame: Baseline
|
Comfort scores range from 0 = most uncomfortable to 10 = most comfortable.
|
Baseline
|
Modified Socket Comfort Score (Smoothness)
Time Frame: Baseline
|
Smoothness scores range from 0 = least smooth to 10 = most smooth.
|
Baseline
|
Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Center of pressure velocity timing
Time Frame: Baseline
|
Timing of peak center of pressure velocity (percent stance) during gait.
|
Baseline
|
Center of pressure velocity magnitude
Time Frame: Baseline
|
Magnitude of peak center of pressure velocity (m/s) during gait.
|
Baseline
|
Soleus Muscle Activity (Electromyography)
Time Frame: Baseline
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Electromyography (EMG, % Maximum) of the soleus during gait.
|
Baseline
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Tibialis Anterior Muscle Activity (Electromyography)
Time Frame: Baseline
|
Electromyography (EMG, % Maximum) of theTibialis Anterior during gait.
|
Baseline
|
Medial Gastrocnemius Muscle Activity (Electromyography)
Time Frame: Baseline
|
Electromyography (EMG, % Maximum) of the Medial Gastrocnemius during gait.
|
Baseline
|
Rectus Femoris Muscle Activity (Electromyography)
Time Frame: Baseline
|
Electromyography (EMG, % Maximum) of the Rectus Femoris during gait.
|
Baseline
|
Vastus Medialis Muscle Activity (Electromyography)
Time Frame: Baseline
|
Electromyography (EMG, % Maximum) of the Vastus Medialis during gait.
|
Baseline
|
Semi-Structured Interview
Time Frame: Baseline
|
Semi-structured interviews will also be used to fully capture the patients' perspectives, experience, and opinions associated with the device options they experienced as part of the study.
|
Baseline
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Jason M Wilken, PT, PhD, University of Iowa
Study record dates
Study Major Dates
Study Start (Estimated)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimated)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 202112331
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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