Cited by 286Inertial Sensor and NavigationContext-Aware Activity Recognition SystemsGait Recognition and Analysis

A new approach to accurate measurement of uniaxial joint angles based on a combination of accelerometers and gyroscopes

Open access
Dejnabadi, H., Jolles, B.M., Aminian, K.·2005·IEEE Transactions on Biomedical Engineering

Abstract

A new method of measuring joint angle using a combination of accelerometers and gyroscopes is presented. The method proposes a minimal sensor configuration with one sensor module mounted on each segment. The model is based on estimating the acceleration of the joint center of rotation by placing a pair of virtual sensors on the adjacent segments at the center of rotation. In the proposed technique, joint angles are found without the need for integration, so absolute angles can be obtained which are free from any source of drift. The model considers anatomical aspects and is personalized for each subject prior to each measurement. The method was validated by measuring knee flexion-extension angles of eight subjects, walking at three different speeds, and comparing the results with a reference motion measurement system. The results are very close to those of the reference system presenting very small errors (rms = 1.3, mean = 0.2, SD = 1.1 deg) and excellent correlation coefficients (0.997). The algorithm is able to provide joint angles in real-time, and ready for use in gait analysis. Technically, the system is portable, easily mountable, and can be used for long term monitoring without hindrance to natural activities.

Integrity signals

Registry

Crossref · 10.1109/tbme.2005.851475

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20 of 20 references verified0 citation errors · 0 not checkable

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  • Kinematic data from accelerometers lack precision because they are affected by increased segment acceleration or drifts.

    “However, kinematic data have been shown to lack precision since they are affected by increased segment acceleration or the presence of drifts (algorithms have been developed to decrease the effect of drifting in accelerometers) [4,5,6].”

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Authors
Dejnabadi, H., Jolles, B. M., & Aminian, K.
Affiliations
  • École Polytechnique Fédérale de Lausanne (CH)
  • Centre Hospitalier Universitaire Vaudois (CH)
Venue
IEEE Transactions on Biomedical Engineering
Published
2005-08
Volume
52
Issue
8
Pages
1478-1484
ISSN
0018-9294 (ISSN-L)
OpenAlex
W2167135438
Cited by
286
References
20
Citations by year
2026: 3 · 2025: 5 · 2024: 3 · 2023: 8 · 2022: 15 · 2021: 13 · 2020: 10 · 2019: 12 · 2018: 20 · 2017: 10 · 2016: 13 · 2015: 21 · 2014: 22 · 2013: 18 · 2012: 20
FWCI
27.80
Type
journal article
Language
en
Open access
Locations
  • IEEE Transactions on Biomedical Engineering (publishedVersion)
  • PubMed (publishedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
  • IRIS (submittedVersion)
  • SERVAL (Université de Lausanne) (submittedVersion)
Topics
  • Physical Sciences › Engineering › Aerospace Engineering › Inertial Sensor and Navigation
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Context-Aware Activity Recognition Systems
  • Physical Sciences › Engineering › Biomedical Engineering › Gait Recognition and Analysis
Keywords
joint angle measurement, soft sensors, knee flexion and extension, gait analysis, wearable sensors, real-time motion monitoring
MeSH terms
Acceleration, Adult, Aged, Computer Simulation, Diagnosis, Computer-Assisted, Female, Humans, Knee Joint, Male, Middle Aged, Models, Biological, Movement, Sensitivity and Specificity, Transducers, Reproducibility of Results, Range of Motion, Articular

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