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Related Experiment Video

Updated: Jun 6, 2026

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
06:09

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

Subject-specific body segment parameters' estimation using biplanar X-rays: a feasibility study.

Baptiste Sandoz1, Sébastien Laporte, Wafa Skalli

  • 1CNRS, Arts et Metiers ParisTech, 151 bd de l’Hopital, Paris, France. baptiste.sandoz@free.fr

Computer Methods in Biomechanics and Biomedical Engineering
|December 15, 2010
PubMed
Summary
This summary is machine-generated.

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This study accurately determined children's body segment masses and centers of mass (CoM) using biplanar X-rays. This method enhances the reliability of pediatric biomechanical models.

Area of Science:

  • Biomechanics
  • Pediatric Physiology
  • Medical Imaging

Background:

  • Accurate body segment parameters are crucial for reliable biomechanical models, especially in children.
  • Direct measurement of these parameters in pediatric populations is challenging.

Purpose of the Study:

  • To determine subject-specific masses and 3D locations of centers of mass (CoM) for body segments in children.
  • To validate a method using biplanar X-rays for obtaining these parameters in pediatric subjects.

Main Methods:

  • Utilized the EOS(®) low-dose X-ray system for simultaneous biplanar imaging in the upright position.
  • Applied specific methods for 3D bone and body shape reconstruction.
  • Incorporated literature-derived densities to define segment masses.

Related Experiment Videos

Last Updated: Jun 6, 2026

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
06:09

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

  • Validated accuracy using a force plate to compare measured and calculated CoM projections and body mass.

    • Main Results:

    • Achieved a mean distance of 4.5 mm between measured and calculated CoM projections.
    • Demonstrated a mean error of 2.6% for estimated versus actual body mass.
    • Successfully applied whole-body methods previously validated on upper leg segments.

    Conclusions:

    • Biplanar X-ray imaging provides a reliable method for obtaining pediatric body segment parameters.
    • This technique overcomes limitations of direct measurement in children.
    • The findings will improve the accuracy and reliability of children's biomechanical models.