Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Muscle synergy adaptation with fatigue development in constant-power cycling.

Computers in biology and medicine·2026
Same author

Effect of muscle fatigue on cycling asymmetry during a constant-power test.

Scientific reports·2026
Same author

Responsiveness and minimal clinically important changes of surface topography parameters in adolescents with idiopathic scoliosis: results from the schroth exercise trial.

European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·2026
Same author

Environmental Scan of the United States Regulatory Practices of Physical Therapy Dry Needling.

Physiotherapy research international : the journal for researchers and clinicians in physical therapy·2026
Same author

CapSense-Flex: A Self-Powered Capillary Lab-on-Chip for Universal Electrochemical Biosensing.

ACS sensors·2026
Same author

Quantifying Lower-Limb Muscle Coordination During Cycling Using Electromyography-Informed Muscle Synergies.

Annals of biomedical engineering·2026

Related Experiment Video

Updated: May 1, 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

3.2K

Assessing asymmetry using reflection and rotoinversion in biomedical engineering applications.

Shannon Hill1, Esteban Franco-Sepulveda2, Amin Komeili2

  • 1Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada.

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
|April 15, 2014
PubMed
Summary
This summary is machine-generated.

This study introduces two 3D symmetry assessment methods, reflection and rotoinversion, to evaluate geometric deviations. Both methods yield similar results for adolescent idiopathic scoliosis torso models, aiding in clinical geometry analysis.

Keywords:
Asymmetryreflectionrotoinversionscoliosis

More Related Videos

Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction
05:02

Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction

Published on: August 30, 2019

6.9K
Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
13:44

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns

Published on: August 30, 2013

42.6K

Related Experiment Videos

Last Updated: May 1, 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

3.2K
Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction
05:02

Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction

Published on: August 30, 2019

6.9K
Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
13:44

Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns

Published on: August 30, 2013

42.6K

Area of Science:

  • Biomedical Engineering
  • Geometric Analysis
  • Clinical Measurement

Background:

  • Symmetry is a key indicator of health and ideal geometry in clinical assessments.
  • Current 2D symmetry assessment methods often neglect the 3D nature of objects.
  • There is a need for robust 3D methods to quantify deviations from symmetry.

Purpose of the Study:

  • To present and compare two novel 3D symmetry assessment techniques: reflection and rotoinversion.
  • To evaluate the applicability of these methods for assessing asymmetry in clinical contexts, specifically adolescent idiopathic scoliosis.
  • To determine the differences and similarities between the reflection and rotoinversion methods.

Main Methods:

  • Geometric models were analyzed using two symmetry assessment techniques: reflection and rotoinversion.
  • Reflection involved mirroring models across a calculated best plane of symmetry.
  • Rotoinversion combined reflection with rotation and translation to best align models.

Main Results:

  • Both reflection and rotoinversion methods produced comparable results when applied to adolescent idiopathic scoliosis torso geometric models.
  • Minor angular differences (0.408° and 0.067°) were observed between the methods, indicating high consistency.
  • The methods yielded identical results for purely bilateral symmetry but differed for combined bilateral and rotational symmetry.

Conclusions:

  • Reflection and rotoinversion are viable 3D methods for assessing geometric asymmetry, particularly in clinical applications like scoliosis.
  • The choice between reflection and rotoinversion depends on the specific symmetry characteristics of the object and the assessment goals.
  • These 3D techniques offer a more comprehensive evaluation of symmetry compared to traditional 2D approaches.