Please use this identifier to cite or link to this item: http://hdl.handle.net/10497/21847
Title: 
Authors: 
Keywords: 
Optical fiber
Foot
First toe
Metatarsal
Phalange
Range of motion
Issue Date: 
2020
Citation: 
Kong, P. W., Chan, C. C., Heng, M. L., Liu, Y., Leow, Y., & Fong, D. T. P. (2020). Fiber Bragg grating sensors for clinical measurement of the first metatarsophalangeal joint quasi-stiffness. IEEE Sensors Journal, 20(3), 1322-1328. https://doi.org/10.1109/JSEN.2019.2946880
Abstract: 
Assessing the mobility of the first metatarsophalangeal joint (MTPJ) of a human foot is useful in clinical practice but there are no standard methods of measurement. The present study developed a new instrumentation using Fiber Bragg grating (FBG) sensor and load cell to quantify the first MTPJ quasi-stiffness in a clinical setting. This system is portable, lightweight, and allows quantification of quasi-stiffness over different ranges of motion in both loading and unloading directions. The laboratory setting validation results showed that FBG sensors could measure MTPJ angular displacement with reasonably good accuracy. The proposed system was successfully trialed in a hospital setting operated by a clinician on eight human subjects. Non-linear torque-angular displacement relationship was observed in both loading and unloading phases, with varying MTPJ quasi-stiffness in the early [loading 6.30 (2.62) Nmm/o unloading 8.46 (2.29) Nmm/ o], middle [loading 7.13 (2.17) Nmm/ o, unloading 11.11 (2.94) Nmm/ o], and late [loading 24.54 (7.14) Nmm/ o, unloading 14.50 (4.77) Nmm/ o] ranges of motion. The new method for measuring the first MTPJ quasi-stiffness established in the present study serves as a reference and opens up opportunities for future clinical investigations.
Description: 
This is the final draft, after peer-review, of a manuscript published in IEEE Sensors Journal. The published version is available online at https://doi.org/10.1109/JSEN.2019.2946880
URI: 
ISSN: 
1530-437X
Other Identifiers: 
10.1109/JSEN.2019.2946880
Related Source: 
The dataset for this journal article is available in the NIE Data Repository at https://doi.org/10.25340/R4/FFUSYR
Appears in Collections:Journal Articles

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