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An Automatically Adjusting Prosthetic Socket for People With Transtibial Amputation

NCT05124652 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 100

Last updated 2026-05-07

No results posted yet for this study

Summary

People with leg amputations often experience daily changes in the size (volume) of their residual limb. These daily changes can cause a prosthesis to fit poorly. They can also cause limb problems like pain or skin breakdown. Prosthetic socket systems that accommodate limb volume changes can help address these issues, but they require users to make adjustments throughout the day. The aim of this research is to create a system that will automatically adjust the fit of the socket and create a well-fitting prosthesis for people with leg amputations who experience volume fluctuations when using their prosthesis.

Conditions

  • Lower Limb Amputation Below Knee (Injury)
  • Diurnal Residual Limb Fluid Volume Fluctuation

Interventions

DEVICE

Auto Adjusting Prosthesis

Participants will test the auto adjusting prosthesis. The prosthesis will be able to move up to 3 panels built into the socket walls to expand or tighten the socket's fit. The auto adjustments will take place during periods of sitting, standing, or walking. Manual adjustments will also be possible either via the researcher controlling the prosthesis or via the key fob developed in the first aim.

Sponsors & Collaborators

  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

    collaborator NIH

  • University of Washington

    lead OTHER

Principal Investigators

  • Joan E Sanders, PhD · University of Washington

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2021-10-18
Primary Completion
2027-03-31
Completion
2027-06-30
FDA Device
Yes

Countries

  • United States

Study Locations

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Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05124652 on ClinicalTrials.gov