- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00888199
Clinical Trial of Tensegrity Prosthetics K3 Promoter Foot Prosthesis
April 24, 2009 updated by: Tensegrity Prosthetics
The purpose of this clinical trial is to determine if the experimental Tensegrity prosthetic foot offers a reduction of the amount of oxygen used while walking, if stability is improved over current prosthetic feet, and whether the experimental device actually increases activity in amputees.
Study Overview
Status
Unknown
Conditions
Intervention / Treatment
Detailed Description
Tensegrity Prosthetics' objectives are to test whether the K3 Promoter prosthetic foot affects walking efficiency or stability in trans-tibial unilateral amputees when compared to their current prostheses.
The primary objectives are to determine if the experimental foot changes Cost of Transport (ml O2/kg/meter) or Stride Time Variability compared to an amputee's current prosthesis.
Cost of Transport is an indicator of metabolic efficiency and Stride Time Variability indicates how likely a person is to fall.
Oxygen consumption and stride time will be collected on a treadmill at the Gait and Motion Lab at the University of Colorado in Boulder.
Study Type
Interventional
Enrollment (Anticipated)
80
Phase
- Phase 2
- Phase 3
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: Jerome Rifkin, MS ME
- Phone Number: 303-666-7722
- Email: jrifkin@tenspro.com
Study Locations
-
-
Colorado
-
Boulder, Colorado, United States, 80310
- University of Colorado Gait Lab
-
Contact:
- Rodger Kram, Ph.D.
- Phone Number: 303-492-7984
- Email: Rodger.Kram@colorado.edu
-
Principal Investigator:
- Jerome Rifkin, MS
-
-
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
18 years to 90 years (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- K2 or K3 classification based on current prosthetic device.
- Males and females ≥ 18 years of age
- Willing and able to sign informed consent
- Able to read, write, and speak English
- Documented to have a unilateral trans-tibial amputation
- Actively utilizing a definitive prosthesis for at least 12 months
- Utilizing current prosthetic foot for at least 3 months
- Cognitively functional, in the opinion of the prosthetists'
- Able to maintain a good gait on their existing limb for approximately 45 minutes
- have a healthy residual limb in good condition
- have a socket with a good, trouble-free fit on their residual limb
Exclusion Criteria:
- Significant ulcers or infections associated with a compromised circulation of the other lower limb
- Intermittent Claudication or Critical Leg Ischemia in the non-amputated leg
- K0, K1or K4 Classification
- Irreducible, pronounced knee or hip flexion contractures
- Bilateral amputations
- Use of a walker for ambulation
- Severe arthritis that would limit the ability to stand without pain or discomfort or the subject's ability to ambulate is limited by symptoms other than the prothesis (e.g., shortness of breath, fatigue, angina, arthritis, etc.). If, in the opinion of the investigator, the subject were to improve their ability to ambulate from the K3 Promoter to the extent that his or her walking would then be limited by a symptom other than the prothesis, the subject should not be enrolled
- Any other clinically significant medical or psychiatric condition that in the opinion of the Investigator could impact the subject's ability to successfully complete this trial
- Advanced neurologic disorder
- Severe congestive heart failure, angina pectoris, or obstructive pulmonary disease
- Use of medication that causes impaired balance or judgment
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: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Congenital/Traumatic
Individuals who were born with a limb deficiency or who have had a traumatic amputation.
|
Experimental prosthetic foot
|
Experimental: Dysvascular/Diabetic
Individuals who have had an amputation as a result of vascular disease.
|
Experimental prosthetic foot
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Change in metabolic cost of transport
Time Frame: 30 and 60 days after the beginning of the protocol
|
30 and 60 days after the beginning of the protocol
|
Stride time variability
Time Frame: 30 and 60 days after beginning of protocol
|
30 and 60 days after beginning of protocol
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Amputee Mobility Predictor Questionnaire
Time Frame: Beginning and end of protocol
|
Beginning and end of protocol
|
Actual change in activity as measured by a step counter
Time Frame: throughout protocol (60 days)
|
throughout protocol (60 days)
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Investigators
- Principal Investigator: Jerome Rifkin, MS ME, Tensegrity Prosthetics
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
January 1, 2010
Primary Completion (Anticipated)
June 1, 2010
Study Completion (Anticipated)
June 1, 2010
Study Registration Dates
First Submitted
April 23, 2009
First Submitted That Met QC Criteria
April 24, 2009
First Posted (Estimate)
April 27, 2009
Study Record Updates
Last Update Posted (Estimate)
April 27, 2009
Last Update Submitted That Met QC Criteria
April 24, 2009
Last Verified
April 1, 2009
More Information
Terms related to this study
Other Study ID Numbers
- 1-Rifkin
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.
Clinical Trials on Amputation
-
Liberating Technologies, Inc.Eunice Kennedy Shriver National Institute of Child Health and Human Development... and other collaboratorsCompletedAmputation | Prosthesis User | Amputation; Traumatic, Hand | Amputation, CongenitalUnited States
-
Boninger, Michael, MDNational Institute of Neurological Disorders and Stroke (NINDS); Ripple Therapeutics...RecruitingAmputation | Amputation; Traumatic, HandUnited States
-
Shirley Ryan AbilityLabEunice Kennedy Shriver National Institute of Child Health and Human Development...Active, not recruitingAmputation | Amputation; Traumatic, Limb | Upper Limb Amputation at the Hand | Upper Limb Amputation at the WristUnited States
-
Fondazione Don Carlo Gnocchi OnlusCompletedAmputation | Amputation; Traumatic, Leg, LowerItaly
-
Fondazione Don Carlo Gnocchi OnlusCompletedAmputation | Amputation; Traumatic, Leg, LowerItaly
-
Medipol UniversityRecruitingEvaluation of Functionality of Amputees According to the Medicare Functional K Classification SystemAmputation | Amputation; Traumatic, Leg, LowerTurkey
-
University of MichiganActive, not recruitingAmputation | Amputation; Traumatic, Leg, LowerUnited States
-
Shirley Ryan AbilityLabUnited States Department of DefenseCompletedAmputation | Amputation; Traumatic, Arm, UpperUnited States
-
Hacettepe UniversityCompleted
-
Liberating Technologies, Inc.Vivonics, Inc.CompletedLower Limb Amputation Below Knee (Injury) | Amputation | Prosthesis User | Amputation; Traumatic, Leg, Lower | Limb; Absence, Congenital, Lower | Amputation StumpUnited States
Clinical Trials on Experimental prosthetic foot (K3 Promoter)
-
Tensegrity ProstheticsUnknown
-
US Department of Veterans AffairsUniversity of MichiganCompletedTranstibial AmputationUnited States
-
Loewenstein HospitalTel Aviv UniversityUnknown
-
University of South FloridaCompleted
-
Orthocare Innovations, LLCEunice Kennedy Shriver National Institute of Child Health and Human Development...RecruitingMovement Disorders | Limb Loss | Limb Weakness | Limb ParalysisUnited States
-
Gaziler Physical Medicine and Rehabilitation Education...Not yet recruitingthe Previous Prosthetic Foot Experience of Patients With Amputation
-
Seattle Institute for Biomedical and Clinical ResearchMinneapolis Veterans Affairs Medical Center; University of Washington; Stanford... and other collaboratorsCompletedAmputationUnited States
-
University of WashingtonWillowWood Global LLCCompleted
-
Vrije Universiteit BrusselRecruitingLower Limb Amputation Below Knee (Injury)Belgium
-
Seattle Institute for Biomedical and Clinical ResearchUniversity of Chicago; Minneapolis Veterans Affairs Medical Center; VA Puget...RecruitingAmputationUnited States