- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00985842
Study to Determine if Different Prosthetic Sockets Effect How Much Oxygen is in the Tissue of Lower Limb Amputees While They Are Walking
Socket System Effect on Tissue Oxygenation During Amputee Gait
Study Overview
Status
Intervention / Treatment
- Device: Pe-Lite and sleeve suspension socket
- Device: Total Surface bearing a socket with a sleeve suspension but without suction
- Device: Total surface bearing suction socket with a pin lock suspension
- Device: Total surface bearing suction socket with a sleeve suspension
- Device: Vacuum-assisted socket system (Harmony System, Otto Bock)
Detailed Description
The amount of oxygen in residual limb tissue is an important health status indicator; resistance to infection, promotion of wound healing, production of collagen, and epithelialization all correlate with higher oxygen levels. Unfortunately, simply donning a lower limb prosthesis may limit circulation and reduce the level of tissue oxygenation. This reduction may be compounded by the biomechanical forces of gait. The compressive loads of the body's weight during stance and the inertial loads of the prosthesis during swing may further occlude circulation, albeit by different mechanisms.
For the dysvascular lower limb amputee, the choice of prosthetic socket and suspension system may impact the overall health of their residual limb and wound healing capacity. An inappropriate choice may lead to skin irritation, tissue breakdown, discomfort, and reduced mobility. For these patients, any component that reduces tissue oxygenation is a significant problem because compromised circulation can forestall wound healing.
The objective of the proposed research is to use photo-oximetry to discover which of five different prosthetic limb systems results in higher residual limb tissue oxygenation during both rest and gait. This experiment will enable evidence-based decision making on this clinically relevant problem. Using a prospective, randomized cross-over experimental design and the investigators' photo-oximetry system, the investigators will measure and compare the tissue oxygenation along the medial and lateral surfaces (3 sites each) of the residual limb during rest and walking.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Washington
-
Seattle, Washington, United States, 98108
- VA Puget Sound Health Care System Seattle Division, Seattle, WA
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
All subjects must meet the following inclusion criteria:
- unilateral transtibial amputee of diabetic etiology between the ages of 18 and 70,
- have been fit with a prosthesis and have used a prosthesis for at least one year,
- wear the prosthesis at least 4 hours per day,
- ambulate without upper extremity aids, and
- have no history of injurious falls within the previous six months.
Exclusion Criteria:
Subjects will be excluded if:
- they have a significant lower extremity pain condition, musculoskeletal disorder, or neurological deficit that interferes with their ability to pursue typical daily activities or alters their gait characteristics or
- their residual limb is ulcerated.
Study Plan
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 |
---|---|
Other: Arm 1
Comparison of five different clinically used suspension and socket systems
|
Prosthetic socket worn by the amputee that has a Pe-lite foam liner between the socket and the residual limb.
It is suspended from the residual limb using a sleeve at the top of the socket.
Prosthetic socket worn by the amputee where the fit of the socket touches every part of the residual limb.
This socket is suspended from the residual limb using a sleeve at the top of the socket.
Prosthetic socket worn by the amputee where the fit of the socket touches every part of the residual limb.
This socket is suspended from the residual limb using a pin that protrudes from the bottom of the liner into the socket that is then locked in place by the amputee.
Prosthetic socket worn by the amputee where the fit of the socket touches every part of the residual limb.
This socket using vacuum suction plus a sleeve at the top of the prosthetic socket to enhance the security of the suspension.
Prosthetic socket worn by the amputee where the a vacuum pump, in this case a mechanically-activated pump, creates a vacuum between the socket and the limb.
This vacuum suspends the prosthetic limb from the amputee's residual limb.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Oxygen in tissue
Time Frame: Comparison of five different systems will be performed in one session occurring on one day
|
Tissue oxygen saturation (StO2)
|
Comparison of five different systems will be performed in one session occurring on one day
|
Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Glenn K Klute, PhD, VA Puget Sound Health Care System Seattle Division, Seattle, WA
Publications and helpful links
Study record dates
Study Major Dates
Study Start (Actual)
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 (Actual)
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
- A4378-R
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.
Clinical Trials on Leg Injuries
-
QualissimaDTA MedicalUnknown
-
Tribhuvan University Teaching Hospital, Institute...UnknownArthroplasty, Replacement, Knee | Leg InjuryNepal
-
Nationwide Children's HospitalNot yet recruiting
-
Faculdade de Ciências Médicas da Santa Casa de...Completed
-
Northern Vermont UniversityCompletedInjury;Sports | Injury, Knee | Injury, Ankle | Injury LegUnited States
-
Caitlin ConleyThe Cleveland ClinicRecruitingWounds and Injuries | Knee Injuries | Patellar Dislocation | Leg InjuryUnited States
-
SolasCure LimitedCompletedVenous Leg Ulcer | Leg Injuries and DisordersUnited States, Hungary, United Kingdom
-
Twin Cities OrthopedicsRecruiting
-
St. Olavs HospitalRosenborgklinikkenRecruiting
-
University Hospital, ToulouseCompleted
Clinical Trials on Pe-Lite and sleeve suspension socket
-
Ohio Willow WoodOhio State UniversityUnknownLower Limb AmputationUnited States
-
Da, Yuwei, M.D.Recruiting