A Study on Reference Range of Healthy Subjects for Detection and Evaluation of Abnormal Foot Movement During Walking in Hemiplegic Subject Using Inertial Sensors

Taihei Noro, Takashi Watanabe, Katsunori Murakami, Naomi Kuge

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Abnormal foot movements seen in hemiplegic patients include drop foot and clubfoot. This study aimed to detect and evaluate abnormal foot movements during early stance phase of hemiplegic patients using inertial sensors. Two inclination angles associated with abnormal foot movement were calculated from acceleration and angular velocity obtained from inertial sensors, and reference range of healthy subjects was created by defining a two-dimensional plane with these two angles. In addition, the angle distribution was divided into 3 groups based on the stride length, and the reference range was created for each group. Measured data of paralyzed side of a hemiplegic subject was suggested to be abnormal foot movements by comparing to the reference range. Therefore, the reference ranges of healthy subject for different stride lengths are expected to be useful for the detection and evaluation of abnormal movements of hemiplegic subjects.

Original languageEnglish
Title of host publicationBiosystems and Biorobotics
PublisherSpringer Science and Business Media Deutschland GmbH
Pages109-113
Number of pages5
DOIs
Publication statusPublished - 2022

Publication series

NameBiosystems and Biorobotics
Volume28
ISSN (Print)2195-3562
ISSN (Electronic)2195-3570

ASJC Scopus subject areas

  • Biomedical Engineering
  • Mechanical Engineering
  • Artificial Intelligence

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