Effect of anatomical landmark placement variation on the angular parameters of the lower extremities

Kristof Racz, Gergely Nagymate, R. Kiss

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Gait analysis gets more accessible, accurate, and simple to use as technology advances. The goal of this paper is to explore the accuracy of an advanced optical motion analysis system, where marker clusters mounted on rigid shapes are used to track the movement of body segments. It aims to examine the magnitude and nature of variation of the angular gait parameters of the lower extremities, caused by inaccuracy of the anatomical landmark placement. These landmarks are defined in the local coordinate systems of the rigid clusters through a calibration procedure, eliminating the need for skin-mounted markers. The used protocol makes it possible to evaluate the exact same motion using different calibrations, eliminating any other possible source for the variation of results. As a conclusion, a good estimation for the accuracy of the usual angular parameters in gait analysis is given. Mean anatomical landmark placement variation was found to be around 8.5 mm. The biggest standard deviations were found in the left hip flexion angle, with an average of 4.38°.

Original languageEnglish
Title of host publicationProceedings of the 13th IASTED International Conference on Biomedical Engineering, BioMed 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages158-163
Number of pages6
ISBN (Electronic)9780889869905
DOIs
Publication statusPublished - Apr 5 2017
Event13th IASTED International Conference on Biomedical Engineering, BioMed 2017 - Innsbruck, Austria
Duration: Feb 20 2017Feb 21 2017

Other

Other13th IASTED International Conference on Biomedical Engineering, BioMed 2017
CountryAustria
CityInnsbruck
Period2/20/172/21/17

Keywords

  • anatomical landmark placement artefact
  • angular parameters
  • calibration
  • lower extremities
  • optical-based gait analysis

ASJC Scopus subject areas

  • Biomedical Engineering

Fingerprint Dive into the research topics of 'Effect of anatomical landmark placement variation on the angular parameters of the lower extremities'. Together they form a unique fingerprint.

  • Cite this

    Racz, K., Nagymate, G., & Kiss, R. (2017). Effect of anatomical landmark placement variation on the angular parameters of the lower extremities. In Proceedings of the 13th IASTED International Conference on Biomedical Engineering, BioMed 2017 (pp. 158-163). [7893284] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.2316/P.2017.852-037