A Motorized Prosthetic Elbow for Restoring Arm Swing 

Matthew J. Major, PhD

This project developed and evaluated a motorized prosthetic elbow that produces cyclical flexion-extension during walking to imitate natural am swing of a transhumeral prosthesis. Thursday, March 2, 2023 Session Time: 11:00 AM - A 

Wearable Ultrasound System for Controlling an Upper-limb Prosthesis

Samuel A. Acuna, PhD

We present a 4-channel wearable ultrasound system capable of extracting a large set of independent prosthesis control signals from forearm muscle activity. We will describe our approach to miniaturize ultrasound hardware such that it can be embedded within a prosthesis. We will also demonstrate the feasibility of the system predict a user's hand grasp with remarkable accuracy.

Improved Patient Outcomes Through the Application of Ratcheting Mechanical Prosthetic Fingers

Ben Pulver, MS

This study was conducted to collect outcome measures data on subjects fit with ratcheting mechanical prosthetic fingers. The study measured functional and psychological outcomes across 11 subjects before and after treatment with a prosthesis. Study findings demonstrate the significant functional and psychological improvements resulting from treatment with a partial hand prosthesis. 

Preliminary Results from Task-based Calibration of Pattern Recognition Control in a Virtual Reality Environment

Gila Baer, MPO

This presentation will introduce attendees to a new method of calibrating upper limb pattern recognition control systems, called "task-based calibration" (TBC). Discussion will address why some users may still struggle with functional pattern recognition control even if able to calibrate and produce repeatable movements and how TBC may help. Insights from initial evaluation of the new method will be shared.