Abstract

The goal of this project was to design and

build a prosthetic leg for a 4 year old Ger-

man shepherd–Lab mix using primarily

3-D printed parts. The use of a prosthetics

leg would make daily activities such as run-

ning and walking easier, as well as relieving

extra stress on other joints. 3-D printing of-

fers the distinct advantages of being low

cost, lightweight, allows for rapid prototyp-

ing, and it is easy to replace/interchange

parts.

Acknowledgements:

Jennifer and Ryan (Kara’s Humans)

Jade Myers (ATP Lab at RIT)

Dr. Steven Day (RIT BME)

Dr. Dan Hoffmann (Monroe County Vet Assc)

Dr. Liz Ferderbar (Greece Animal Hospital)

Tom Bitter (RIT MSD Guide)

Initial Concept Drawing & Design/Features

Prototyping:

V1 V2

V3 V4

Testing Pictures

Budget:

Project total: $338

Single Leg: ~$200

Final product on Kara:

Assembly Process

Requirements Vs. Performance

CAD Model & FEA:

Comfort

Lightweight (<5lb)

Easy to Assemble

Ease of Use for

Owner

Supports Weight

Durable

Load Reduction of

Other Joints

Decrease Fatigue

1 2 3 4 5 6 7

Shin

Brace

Knee

Joint

Orthotic

Exoskeleton

Thigh

Brace

Harness Upper

Attachment

Loop

Stress Analysis of Upper Leg

Assembly(1) and Lower Loop (2&3)

1

2

3