19 August 2017 Optical fiber Bragg grating-instrumented silicone liner for interface pressure measurement within prosthetic sockets of lower-limb amputees
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Abstract
This paper presents a fiber Bragg grating (FBG)-instrumented prosthetic silicone liner that provides cushioning for the residual limb and can successfully measure interface pressures inside prosthetic sockets of lower-limb amputees in a simple and practical means of sensing. The liner is made of two silicone layers between which 12 FBG sensors were embedded at locations of clinical interest. The sensors were then calibrated using a custom calibration platform that mimics a real-life situation. Afterward, a custom gait simulating machine was built to test the liner performance during an amputee’s simulated gait. To validate the findings, the results were compared to those obtained by the commonly used F-socket mats. As the statistical findings reveal, both pressure mapping methods measured the interface pressure in a consistent way, with no significant difference (P-values ≥0.05). This pressure mapping technique in the form of a prosthetic liner will allow prosthetics professionals to quickly and accurately create an overall picture of the interface pressure distribution inside sockets in research and clinical settings, thereby improving the socket fit and amputee’s satisfaction.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Ebrahim A. Al-Fakih, Nooranida B. Arifin, Gholamhossein Pirouzi, Faisal R. Mahamd Adikan, Hanie N. Shasmin, Noor A. Abu Osman, "Optical fiber Bragg grating-instrumented silicone liner for interface pressure measurement within prosthetic sockets of lower-limb amputees," Journal of Biomedical Optics 22(8), 087001 (19 August 2017). https://doi.org/10.1117/1.JBO.22.8.087001 . Submission: Received: 7 April 2017; Accepted: 27 July 2017
Received: 7 April 2017; Accepted: 27 July 2017; Published: 19 August 2017
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