TRUSTEES OF INDIANA UNIVERSITY INDIANA UNIVERSITY INDIANAPOLIS United States
This multi-institutional application addresses the FY15 PRORP Clinical Trial Award Focus Area of Prosthetic andor Orthotic Device Function and targets military combat related orthopaedic injuries that significantly impact unit readiness and return-to-dutywork rates. The project calls for the rapid implementation of clinical trials focusing on the development and optimization of novel technologies that improve prosthesis function to reduce secondary physical health effects associated with using a prosthetic limb such as limb injury and osteoarthritisthrough 1 real-time adaptation of prosthesis suspension in response to user activity level, 2 monitoring and adjusting prosthesis suspension to preserve residual limb health, and 3 providing end-user and prosthetist feedback on metrics of prosthesis performance. Current techniques for fitting a prosthetic socket lack quantitative measures. Prosthetists aim to limit movement inside the socket however, the degree of movement is determined by visual inspection by the prosthetist. Further, limited research has been conducted to determine the relationship between movement of the limb inside the socket and limb health. Previously, project team members developed novel technologies to monitor movement at the socket interface using elevated vacuum suspension pressure data, innovative techniques to quantify changes in the residual limb health in response to prosthetic suspension, and functional performance expertise using a variety of modalities that will be leveraged in this research. ObjectiveHypothesesSpecific Aims The overall objective of proposed studies is to develop an adaptive socket system that detects in-socket residual limb motion and dynamically adjusts internal socket negative pressure to optimize fit and performance. Specific Aim 1 Test relationship of pressure variance waveforms with residual limb movement in-socket.