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Due to the rapid growth of children and the high cost of myoelectric technology, children are not given the same opportunities to use myoelectric prosthetics as adults. The Muscle Activated Prosthesis (MAP) team is developing an affordable, transradial, myoelectric prosthetic for a thirteen-year-old girl. The MAP team is designing a myoelectric prosthetic that will cost under $1,000, over 90% less than custom myoelectric devices on the market. This device has an EMG sensor, a microprocessor, a printed circuit board (PCB), linear actuator motors, and a battery organized within a 3D-printed transradial prosthesis to open and close the hand grip when the EMG detects electrical signals via muscle contractions in the client’s flexor carpi radialis. Currently, the team has fully assembled a prosthetic prototype and will obtain feedback from the partner, Ability Prosthetics, and the client to deliver a final prototype. This poster details the recent mechanical and electrical design optimizations, grip strength testing, and integration of mechanical and electrical components to build the current functioning prosthesis.

Publication Date

Spring 2021


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The work presented in this document has been provided solely for educational and edification purposes. All materials are composed by students of Messiah University and are not certified by any means. They do not constitute professional consultation and require the examination and evaluation by a certified engineer through any product development process. The contents documented are the produced work by the student design team but do not necessarily represent the as-built or as-assembled state of a complete and tested design; faculty, staff, and other professionals involved in our program may have augmented the student engineering work during implementation, which may not be recorded within this document.

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Design of a Transradial Myoelectric Prosthesis

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