- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00686764
Evaluation of Ultrasonic Neuroma Size With Residual Limb Pain in Above-Knee Amputees
Evaluation of Ultrasonic Neuroma Size With Residual Limb Pain in Above Knee Amputees
Background: The formation of neuromas, a fusiform swelling of a nerve or nerve ending, is a well documented response to limb amputation. Likewise, Residual Limb Pain (RLP), pain felt from the remaining portion of the amputated limb, is common among amputees. Neuromas are found in more than 90% of lower extremity amputations, of which 30-50% are pain-generating for the patient . And while surgical techniques reveal the commonly held belief that neuroma formation is one of the causal drivers behind RLP, there has been no study to demonstrate that the two events - namely the magnitude of neuroma formation and the magnitude of pain experienced by amputees - are correlated. If this correlation, or lack thereof, were elucidated with the use of ultrasonography, this would provide the preliminary data which could lead to further studies in neuroma minimization and/or proliferation.
Objective: This study seeks to use ultrasonography (US) to quantify the degree to which neuroma size and the nature of surrounding tissue correlate with the experience of RLP in trans-femoral amputees.
Setting and Subjects: This study will enroll 30 trans-femoral amputees, male and female, who are over the age of 18. The study will take place in the OHSU Orthopaedic Outpatient Clinic, and OHSU Imaging Department.
Intervention: None. This is an observational clinical study in which we will characterize the sciatic nerve/neuroma and surrounding tissue using ultrasound.
Measurements: We will use US to measure the cross sectional area of the neuroma at its widest point and compare this to the cross section of the same neuron at the lesser trochanter. Furthermore, we will describe the morphology of the neuroma. To quantify the subject's pain experience we will utilize the Questionnaire for Persons with Transfemoral Amputation (Q-TFA), Trinity Amputation & Prosthetic Experience Scale (TAPES), Visual Analog Scale (VAS), and the Short Form 36 (SF-36).
Analysis: The statistical analysis will employ a Pearson correlation coefficient and linear regression analysis.
Study Overview
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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Oregon
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Portland, Oregon, United States, 97239
- Oregon Health & Science University Center for Health & Healing
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- greater than 18 years old
- a trans-femoral amputee
- more than one year post-amputation
- has worn a prosthesis within the last year
Exclusion Criteria:
- subject also diagnosed with diabetes
- subject also diagnosed with Peripheral Vascular Disease
- subject also diagnosed with peripheral neuropathy
- subject with spinal cord, head, or nerve root injury
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Group 1
Trans-femoral amputees that meet the eligibility criteria.
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Using ultrasound, we will measure the cross-sectional area of the neuroma at its widest point and compare to the cross-sectional area of the same nerve at the lesser trochanter. We will be using four different metrics for quantifying the pain experience of each subject: Questionnaire for Persons with Transfemoral Amputation (Q-FTA), Trinity Amputation and Prosthesis Experience Scales (TAPES), Visual Analog Scale (VAS), and the Short-Form 36 (SF-36). |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Ultrasonic neuroma size
Time Frame: Single observation at time of consent
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Single observation at time of consent
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Residual limb pain
Time Frame: Single observation at time of consent
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Single observation at time of consent
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Collaborators and Investigators
Investigators
- Principal Investigator: Hans Carlson, M.D., Oregon Health and Science University
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- OHSUIRB#3862
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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