4.4 Article

Feasibility testing of a novel prosthetic socket sensor system

Journal

DISABILITY AND REHABILITATION
Volume 45, Issue 14, Pages 2374-2381

Publisher

TAYLOR & FRANCIS LTD
DOI: 10.1080/09638288.2022.2093997

Keywords

Amputation; sensor; rehabilitation; socket fit; prosthesis

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This study describes the design and testing of a novel sensor system for measuring distal end weight bearing in prosthetic sockets and alerting users of poor socket fit. The results show consistent relationships between the sensor measurements and socket fit, and users expressed interest in the device, highlighting its potential benefits during early prosthesis training.
Purpose Poorly fitting prosthetic sockets contribute to decreased quality of life, health, and well-being for persons with amputations. Therefore, improved socket fit is a high clinical priority. Methods In this study, we describe the design and testing of a novel sensor system that can be incorporated into a prosthetic socket to measure distal end weight bearing in the socket and can alert a prosthesis user if poor socket fit is suspected. We present the results of testing this device with three Veterans who were new prosthesis users and three Veterans who were experienced prosthesis users. Results and conclusions We collected sensor data during walking trials while participants wore varying numbers of sock plies and qualitative feedback on the design of the socket fit sensor system. For analysis, peak sensor measurements during walking cycles were identified and combined with socket fit data (i.e., a clinician-determined level of good, too tight, or too loose and the number of sock ply worn each trial). We found consistent relationships between peak sensor measurements and socket fit in our sample. Also, all users expressed an interest in the device, highlighting its potential benefits during early prosthesis training.

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