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Socket-leg Interface Movements in Transtibial Amputees
Sponsor: Norwegian University of Science and Technology
Summary
This exploratory interventional study investigates dynamic prosthetic fit in unilateral transtibial prosthesis users by objectively measuring socket-leg interface movements (SLMs) during functional activities. During one single study visit, participants complete standardized laboratory tasks using three different suspension systems (pin-lock, passive vacuum, and active vacuum) applied to a transparent replica of their current prosthetic socket. Motion capture, force measurements, and patient-reported outcomes are used to evaluate how suspension systems influence interface motion, rotation resistance, gait characteristics, and user comfort. The study aims to improve clinical understanding of prosthetic fit and support more informed prosthetic decision-making in routine care.
Official title: Socket-leg Interface Movements as a Measure of Dynamic Prosthetic Fit for Transtibial Amputees: An Exploratory Study
Key Details
Gender
All
Age Range
16 Years - Any
Study Type
INTERVENTIONAL
Enrollment
20
Start Date
2026-04-20
Completion Date
2029-12-27
Last Updated
2026-04-13
Healthy Volunteers
No
Conditions
Interventions
Pin-Lock Suspension System
Participants perform all tasks using a pin-lock suspension system applied to their test socket.
Passive Vacuum Suspension System
Participants perform all tasks using a passive vacuum suspension system applied to their test socket.
Active Vacuum Suspension System
Participants perform all tasks using an active vacuum suspension system applied to their test socket.
Locations (1)
NTNU's Movement analysis laboratory at Helgasetr
Trondheim, Norway