Abstract
In this paper, a portable, low cost and non-invasive real-time signals processing prototype was designed and developed for the diagnosis and continuous monitoring of the physiopathological condition of foot drop. The behavior of the electrical activity of the Tibialis Anterior (TA) and Peroneus Longus (PL) muscles through bipolar surface electromyography (sEMG), together with the angular measurement of the joint complex of the ankle-foot in the sagittal and frontal planes using an Inertial Measurement Unit (IMU) sensor system, are monitored from a mobile interface. This prototype consists of five modules capable of performing functions of sensing, signal processing, data storage, and transmission. The Central Processing Unit (CPU) process the sEMG signals from the two-channel amplifier with 10 bits of resolution at a sampling frequency of 1ksps; the IMU Sensor System operates at a sample rate of 1ksps with 16 bits of resolution. Both sEMG and angular displacement data registers are transmitted wirelessly via Bluetooth communication protocol to a mobile interface designed for smartphones/tablets and PC. Data verification was made using a commercial electromyograph and a goniometer. The observations regarding the health status of the patient on a statistical, mathematical analysis of the collected data, exhibiting a mean-square-error of 5,27% for the sEMG as well as an average error of \(\le \!\!\pm 2^{\circ }\) in the angular displacement measurements. The prototype designed and developed establishes a new perspective in the recognition and elaboration of profiles of physiopathological disabilities in humans, development of clinical applications, and databases for future studies of the disease.
This work was supported by a grant from the Faculty of Engineering and Electronic Engineering Program of Universidad El Bosque, with the research project number PFI-2017-EL-011.
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Notes
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Ez Read Jamar Goniometer-Manual medical goniometer.
- 2.
ADInstruments Powerlab recording unit, Teaching Series-26T model.
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Noriega, S., Rojas, M.C., Murrugarra, C. (2019). A Wireless, Modular and Wearable System for the Recognition and Assessment of Foot Drop Pathology. In: Figueroa-GarcÃa, J., Duarte-González, M., Jaramillo-Isaza, S., Orjuela-Cañon, A., DÃaz-Gutierrez, Y. (eds) Applied Computer Sciences in Engineering. WEA 2019. Communications in Computer and Information Science, vol 1052. Springer, Cham. https://doi.org/10.1007/978-3-030-31019-6_33
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