Evaluation of the Development of an Advanced, Conformable Prosthetic Socket, Study II

Study Overview
=================
Brief Summary
-----------------
The purpose of this study is to work with prosthetists to fit the novel conformable socket material developed by Infoscitex, to subjects, and determine if it is a viable alternative to current prosthetic socket liners. During this task, the research team will travel to the prosthetists locations to have them fit the subject with the conformable woven socket and a check socket, and provide subjective feedback with regard to comfort and fit for the amputee, its ease of use, and breathability. The subject will also wear the woven socket for gait analysis and provide his/her feedback as well.

Detailed Description
-----------------
Modern prosthetics have improved significantly with regards to control and functionality, but the fit of the residual limb within a prosthetic socket is a primary concern for many amputees. A poor fit can lead to skin irritation, tissue breakdown, and pain. The volume of the residual limb of an amputee changes throughout the course of a day and throughout the year. Volume fluctuation within the socket can lead to issues for the amputee, including decreased comfort, increased shear forces, increased pressure on bony prominences, as well as a poor gait pattern. An uncomfortable or non-performing socket/residual limb interface decreases user compliance with the prosthetic and therefore decreases the activity level of amputees who want to remain active in their civilian and military lives. The investigators are developing a multilayered socket that takes advantage of a novel braided material for strength and passive conformability with thin layers dedicated to wearer comfort. This new socket provides ultimate fit for improvement in the performance of the prosthesis. The socket adapts itself to the changing physical shape of the residual limb as the prosthesis is worn. The adaptation is a natural result of the material properties, so is done passively and in real time. The materials are lightweight, breathable, and ultrasound transparent, allowing the prosthetic to function in a variety of environments. This study will be undertaken to have prosthetists fit subject lower limb amputees with the woven inner socket, with a check socket for evaluation in a gait lab setting. At the completion, the subject and prosthetists will be asked to complete a questionnaire and give their opinions regarding the material of the woven inner socket.

Conditions
-----------------
Evaluation of a New Prosthetic Socket Liner Material

Intervention / Treatment
-----------------
* Device: Novel conformable woven inner socket


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: lower limb amputation stable residual limb volume loss of limb due to trauma at least 18 years of age Exclusion Criteria: evidence or history of neuropathy presence of phantom limb pain

Ages Eligible for Study
-----------------
Minimum Age: 18 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
No

Study Plan
=================
How is the study designed?
-----------------

Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Lower Limb Amputees<br>Those with lower limb amputations | Device: Novel conformable woven inner socket<br>* Prosthetic socket liner fabricated from novel materials to allow passive conformability for the user<br>|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
prosthetic socket, residual limb volume fluctuation, conformable socket liner