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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT02346019
Other study ID # STU00090292
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date August 2014
Est. completion date March 2020

Study information

Verified date March 2020
Source Shirley Ryan AbilityLab
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The purpose of our study is to improve the fit and function of prosthetic sockets for above the knee amputees through the use of an outpatient thigh reduction surgical procedure.


Description:

We will quantify the anatomical distribution of subcutaneous fat, muscle and bone in the residual limb of the transfemoral amputees with an MRI. We will measure the displacement of the socket wall relative to the femur under mechanical loading with x-ray. The functional mobility level of the subject with be quantified via standard clinical and bio mechanical tests. Perform a standard medial thighplasty with our without thigh liposuction. Characterize the post-surgical anatomy, compliance of the residual limb and function of the amputee subjects. After six months, repeat the MRI and xray and compare results. Subject will also complete a questionnaire regarding their views on the outcome of the surgery.


Recruitment information / eligibility

Status Completed
Enrollment 1
Est. completion date March 2020
Est. primary completion date August 2019
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

- Obese transfemoral amputees with a BMI of at least 30.

- Mid to long residual limb, excessive adipose tissue in their residual limb

- Community ambulators

- Adults over the age of 18

Exclusion Criteria:

- Amputation due to vascular disease or diabetes

- Cognitive impairments that would interfere with the protocol or patient safety

- Systemic disease that is not stable or would significantly increase the risk of complications with surgery

- Chronic wounds

- People who do not ambulate on a daily basis

- Children under the age of 18.

Study Design


Related Conditions & MeSH terms


Intervention

Procedure:
Medial thighplasty with or without thigh liposuction
Perform a standard medial thighplasty with or without additional thigh liposuction on up to three obese transfemoral amputee subjects. The subjects will be transfemoral amputees who are successful ambulators and have a body mass index (BMI) of 30 or greater with excessive adipose tissue in their residual limb. The surgery will consist of medial excision of excess adipose and cutaneous tissue with circumferential liposuction.

Locations

Country Name City State
United States Rehabilitation Institute of Chicago Chicago Illinois

Sponsors (1)

Lead Sponsor Collaborator
Shirley Ryan AbilityLab

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Assess compliance of residual limb in the socket, which will improve the fit and comfort of the prosthesis. We will measure the compliance of their residual limb by the displacement of the socket wall relative to the femur under mechanical loading with X-ray. The subjects will adjust their foot placement, limb loading and muscle contractions to achieve up to 8 specified force/torque levels (as measured by a 6 degree-of-freedom load cell located in series with their pylon and socket), which correspond to forces and torques that are typical of over ground walking and standing postures and are scaled for their body weight. For each force/torque level, static X-ray scans of locations of the prosthetic socket wall and residual limb femur will be acquired. Pre surgery and 6 months post surgery
Secondary Assess walking endurance Complete 6 minute walk test over level ground as metabolic energy consumption and heart rate our monitored. Subjects may wear a portable, commercially available metabolic measurement system so that their metabolic energy expenditure may be calculated after the experiment. Pre surgery and 6 months post surgery
Secondary Assess balance stability Complete the 4 square step test as a clinical test of the ability to change directions while stepping. Pre surgery and 6 months post surgery
See also
  Status Clinical Trial Phase
Not yet recruiting NCT01982721 - Evaluation of an Acceleration-Based Prosthetic Knee Locking Mechanism for Reducing the Risk of Falling in Transfemoral Amputees N/A
Completed NCT04644991 - The Effect of Kinesiology Taping on Lumbar Region Structures and Balance in Transfemoral Amputees N/A
Active, not recruiting NCT03204513 - Impact of Powered Knee-Ankle Prosthesis Leg on Everyday Community Mobility and Social Interaction N/A