Foot-Mounted Inertial Measurement Units-Based Device for Ankle Rehabilitation

Abstract

Ankle sprains are frequent injuries that occur among people of all ages. Ankle sprains constitute approximately 15% of all sports injuries, and are the most common traumatic emergencies. Without proper treatment and rehabilitation, a more severe sprain can weaken the ankle, making it more likely for new injures, and leading to long-term problems. In this work, we present an inertial measurement units (IMU)-based physical interface for measuring the foot attitude, and a graphical user interface that acts as a visual guide for patient rehabilitation. A foot-mounted physical interface for ankle rehabilitation was developed. The physical interface is connected to the computer by a Bluetooth link, and provides feedback to the patient while performing dorsiflexion, plantarflexion, eversion, and inversion exercises. The system allows for in-home rehabilitation at an affordable price while engaging the patient through active therapy. According to the results, more consistent rehabilitation could be achieved by providing feedback on foot angular position during therapy procedures.

A Low-Cost, Wireless, 3-D-Printed Custom Armband for sEMG Hand Gesture Recognition

“…A tri-axis magnetometer can be added to form a hybrid IMU, sometimes referred to as a Magnetic, Angular Rate, and Gravity (MARG) sensor [26], to reduce the orientation accumulated error. Information from an IMU system is widely employed in the domain of rehabilitation [27]. Additionally, for dynamic sEMG-based gesture recognition, orientation information from IMU devices can be leveraged to obtain higher performances than with EMG alone [20,28,29].…”

A Practical Sensor-Based Methodology for the Quantitative Assessment and Classification of Chronic Non Specific Low Back Patients (NSLBP) in Clinical Settings

“…Data fusion algorithms, such as Kalman or Complimentary filters, are typically utilized to estimate 3D orientations, based on the combined signals obtained from the accelerometer, gyroscope and magnetometer [14]. Navigation errors, which may occur during high acceleration movements and magnetic disturbance, should be accounted for [14,18]. Commercially available IMUs incorporate approaches such as a rotation matrix or Euler angle to quantify the captured kinematics in a global fixed frame [19].…”

Uso de sensores inerciales en fisioterapia: Una aproximación a procesos de evaluación del movimiento humano

“…A través de la historia los sensores inerciales gracias a su fiabilidad (15,42) y a su poca desviación estándar al momento de arrojar los resultados, trascendieron del mundo de la ingeniería para ser empleados en otras áreas (43) . En el campo de la fisioterapia y afines, su papel radicó en la interpretación y cuantificación del movimiento corporal humano (21) para ser analizados por medio de diferentes protocolos, donde se utilizan puntos anatómicos específicos para su colocación y posterior ejecución del movimiento (16,44) .…”

“…Mantilla, 2017 (21) Emplear los acelerómetros en rehabilitación funcional de personas con condiciones de salud especifica (21) Leardini, et al, 2014 (22) Gómez, et al, 2018 (23) Yasuma, et al, 2020 (24) Kim, et al, 2020 (25) Wilches, et al, 2007 (26) Beange, et al, 2019 (27) Ganesan, et al, 2015 (28) Wang, et al, 2017 (29) Fantozzi, et al, 2015 (30) Utilizar las unidades IMU en rehabilitación física como forma de retroalimentación a los usuarios (22)(23)(24)(25)(26) o a dispositivos como exoesqueletos, que participan en procesos de rehabilitación funcional (28,29,30) Johnston, et al, 2019 (31) Li, et al, 2020 (32) Liu, et al, 2018 (33) Evaluar el control postural (31) , rangos de movimiento articular y patrones de movimiento (32,33) Caliandro, et al, 2019 (34) Gerber, et al, 2019 (35) Wolff, et al, 2020 (36) Oubre, et al, 2020 (37) Facilitar los procesos de neuro-rehabilitación en usuarios con parálisis cerebral, ataxia y secuelas de enfermedad cerebro vascular (34)(35)(36)(37) Clemens, et al, 2020 (38) Permitir detectar diferencias biomecánicas en personas con amputaciones transfemorales y transtibiales (38) Los sensores inerciales establecen medidas en los procesos de micro y macro ciclos de atletas amateurs o élite, cuantificando las condiciones de velocidad y aceleración de gestos técnicos específicos (2,8) , o incluso medir fases y ciclos de actividades como la carrera y la marcha (9) ; brindando...…”