- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05831696
Metabolic Cost of Walking With Passive vs. Powered Prosthetic Knees Among Persons With Limb Loss
April 3, 2024 updated by: Loma Linda University
The purpose of this industry-initiated research study is to test that a powered microprocessor controlled knee improves metabolic function during walking in level and sloped conditions as compared to the subject's physician prescribed prosthesis.
Study Overview
Status
Recruiting
Conditions
Intervention / Treatment
Detailed Description
The Procedures include:
Initial Visit:
- Informed consent
- HIPAA authorization
- Determine/verify ambulation potential
- Take and record body measurements (height, weight, circumferences)
- Activities-Specific Balance Confidence (ABC) scale
- L.A.S.A.R. Posture alignment assessment with RxPx
Second Visit
- Fit with heartrate monitor and metabolic analyzer mask
- Treadmill Test (level-ground) with RxPx
- Rest
- Treadmill Test (incline) with RxPx
- Fit subject with PMPK
- L.A.S.A.R. Posture alignment assessment with PMPK
- Subject uses PMPK for one week as their primary prosthesis
Third Visit (1 week later)
- Fit with heartrate monitor and metabolic analyzer mask
- Treadmill Test (level-ground) with PMPK
- Rest
- Treadmill Test (incline) with PMPK
- Activities-Specific Balance Confidence (ABC) scale
- Return PMPK and refit of RxPx
- Verify alignment with L.A.S.A.R. Posture alignment
- Check that all fasteners are secure
Study Type
Interventional
Enrollment (Estimated)
12
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Michael Davidson, Ph.D.
- Phone Number: 9095586516
- Email: mdavidson@llu.edu
Study Locations
-
-
California
-
Loma Linda, California, United States, 92354
- Recruiting
- Loma Linda University
-
Contact:
- Michael Davidson, Ph.D.
- Phone Number: 909-558-6516
- Email: mdavidson@llu.edu
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
- Adult
- Older Adult
Accepts Healthy Volunteers
No
Description
Inclusion Criteria:
- Males and Females with unilateral knee disarticulation or transfemoral (KD/TF) amputation.
- a body mass greater than 49Kg and less than 117Kg
- 18-75 years of age
- Have an ambulation potential of K3 or K4
- Use a prosthesis daily for walking or sports activities
- No less than six months of experience with a prosthesis
- No socket issues or changes in the last six weeks
- No residual limb pain affecting functional ability.
Exclusion Criteria:
- Cannot walk at different speeds (MCFL K0-K2)
- Limb-loss below the knee or through the hip
- More than one amputation.
- Uses an assistive device for walking
- Uncontrolled edema in leg compartments
- Compromised skin of the residual limb or contralateral foot
- Are 180 days or less post-amputation
- Pregnant (self-reported)
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Powered Microprocessor-controlled Knee (PMPK)
the "Power Knee" is a commercially available PMPK.
|
A microprocessor-controlled Knee with standardized commercial prosthetic foot
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
VO2 uptake - level ground
Time Frame: Change between Baseline Visit (study enrollment) and Visit 2 (3 weeks post-study enrollment)
|
VO2 uptake during ambulation on a treadmill - level ground
|
Change between Baseline Visit (study enrollment) and Visit 2 (3 weeks post-study enrollment)
|
VO2 uptake - incline
Time Frame: Visit 2 (3 weeks post-study enrollment)
|
VO2 uptake during ambulation on a treadmill - 5 degree incline
|
Visit 2 (3 weeks post-study enrollment)
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Balance confidence
Time Frame: At Baseline Visit (study enrollment)
|
Activities based balance confidence survey (0-100%) higher score means more balance confidence
|
At Baseline Visit (study enrollment)
|
Exertion
Time Frame: Change between Visit 2 (3 weeks post-study enrollment) and Visit 3 (4 weeks post-study enrollment)
|
Borg Exertion Scale (0-10) with 10 being maximum exertion
|
Change between Visit 2 (3 weeks post-study enrollment) and Visit 3 (4 weeks post-study enrollment)
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Investigators
- Principal Investigator: Michael Davidson, Ph.D., Loma Linda University Health
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
February 27, 2023
Primary Completion (Estimated)
February 1, 2025
Study Completion (Estimated)
February 1, 2025
Study Registration Dates
First Submitted
February 27, 2023
First Submitted That Met QC Criteria
April 14, 2023
First Posted (Actual)
April 26, 2023
Study Record Updates
Last Update Posted (Actual)
April 5, 2024
Last Update Submitted That Met QC Criteria
April 3, 2024
Last Verified
April 1, 2024
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- 5220320
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
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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