
Fully Adjustable Prosthetic
A one-size-fits-all 3D printed leg.
Lance Johnson, University of Wisconsin-Madison
⚠️ WARNING ⚠️
This project is no longer being updated and has been superseded by the V2 version, which you can check out below. We have left this project up here for posterity and documentation purposes, but we no longer provide free samples of this version.
Adjustable Prosthetic Leg - Version 2
Description
A fully adjustable, 3D-printed, lower limb prosthetic to improve long-term outcomes particularly for children and adolescents living with lower limb loss.
Introduction
As of 2017, nearly 58 million people globally were living with a limb amputation, a number expected to rise annually. The primary causes of amputations vary by region, with peripheral vascular disease, diabetes mellitus, and trauma being the leading causes. Over 50% of these amputations are transtibial, or below-the-knee. Prosthetic limbs have been a key treatment for amputees, with technological advancements significantly improving patient outcomes. However, prosthetics remain costly, with basic lower limb prosthetics ranging from $5000 to $10,000, and adaptation to these devices is challenging, leading to a 22% abandonment rate within the first year. Users face numerous issues, including phantom limb pain, muscle imbalances, discomfort, and social stigma.
Problem Statement
Conventional transtibial prosthetics include a socket, suspension method, pylon, and terminal device/foot, usually customized through 3D scanning technology. This method, while effective, is time-consuming, expensive, and inaccessible for many amputees. Additionally, the fixed size of these prosthetics poses problems for growing children and adolescents, necessitating frequent replacements.
Project Goal
This project aims to create a low-cost, adjustable transtibial prosthetic that can be 3D-printed and customized to fit a wide range of users. This prosthetic is designed to grow with the user, particularly benefiting children and adolescents.
Team Members
Lance Johnson - Project Originator and Concept Designer
Ron Durham - Liaison, 3D Printing Specialist, and Project Coordinator
Ethan Shute - Lead CAD Designer and Prototyping Specialist
View the full documentation on Thingiverse right here.
Or check it out below!





