Powered Humeral Rotator for Persons with Shoulder Disarticulation Amputations

Abstract

There are no commercially available externally-powered humeral rotators. This paper describes the development of a new powered-humeral rotator based on an LTI Boston Elbow II drive train suitable for use on persons with short transhumeral amputations or shoulder disarticulation amputations. An initial fitting of the device as part of a six motor arm demonstrated the efficacy of the device and anecdotal evidence suggested the patient found the device to be of benefit.