Clinical-functional evaluation and test-retest reliability of the G-WALK sensor in subjects with bimalleolar ankle fractures 6 months after surgery
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Fernández-Gorgojo, Mario; Salas-Gómez, Diana; Sánchez-Juan, Pascual; Barbado, David; Laguna-Bercero, Esther; Pérez Núñez, María IsabelFecha
2022Derechos
Attribution 4.0 International
© 2022 by the authors
Publicado en
Sensors 2022, 22, 3050
Editorial
MDPI
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Palabras clave
Malleolar fractures
Inertial sensor unit
Wearable sensor
Walking
Spatiotemporal parameters
Gait analysis
Functional scales
Clinical measurement
Agreement of measurements
Resumen/Abstract
Ankle fractures can cause significant functional impairment in the short and long term. In
recent years, gait analysis using inertial sensors has gained special relevance as a reliable measurement
system. This study aimed to evaluate the differences in spatiotemporal gait parameters and clinical-
functional measurements in patients with bimalleolar ankle fracture and healthy subjects, to study the
correlation between the different variables, and to analyze the test-retest reliability of a single inertial
sensor in our study population. Twenty-two subjects with bimalleolar ankle fracture six months after
surgery and eleven healthy subjects were included in the study. Spatiotemporal parameters were
analyzed with the G-WALK sensor. Functional scales and clinical measures were collected beforehand.
In the ankle fracture group, the main differences were obtained in bilateral parameters (effect size:
0.61 d 0.80). Between-group differences were found in cadence, speed, stride length, and stride
time (effect size: 1.61 d 1.82). Correlation was moderate (0.436 < r < 0.554) between spatiotemporal
parameters and clinical-functional measures, explaining up to 46% of gait performance. Test-retest
reliability scores were high to excellent (0.84 ICC 0.98), with the worst results in the gait phases.
Our study population presents evident clinicalfunctional impairments 6 months after surgery. The
G-WALK can be considered a reliable tool for clinical use in this population.
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