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

Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

991
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
991
Anatomical Positions01:11

Anatomical Positions

20.7K
In anatomy, several standard anatomical positions are used as references for describing the position and orientation of different body parts. These positions help provide a common frame of reference when discussing anatomical structures. The anatomical position is the standard reference point for describing the body's position and orientation. In this position:
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
20.7K
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

785
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
785
Kinematic Equations for Rotation01:30

Kinematic Equations for Rotation

913
In mechanics, when one observes a rigid body in rotational motion with constant angular acceleration, it is possible to establish equations for its rotational kinematics. This process resembles how linear kinematics are dealt with in simpler motion studies.
For instance, imagine a point A on a rigid body engaged in circular motion. The translational velocity of this particular point can be calculated by taking the time derivatives of the displacement equation, which essentially measures the...
913
Transformation of Plane Strain01:12

Transformation of Plane Strain

560
When analyzing elongated structures like bars subjected to uniformly distributed loads, it is essential to understand the transformation of plane strain when coordinate axes are rotated. This transformation helps to assess how material deformation characteristics vary with orientation, which is crucial in materials science and structural engineering.
Under plane strain conditions, typical for members where one dimension significantly exceeds the others, deformations and resultant strains are...
560
Relative Motion Analysis using Rotating Axes - Acceleration01:22

Relative Motion Analysis using Rotating Axes - Acceleration

880
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
Time differentiation is...
880

You might also read

Related Articles

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

Sort by
Same author

"What are the effects of diagnostic imaging on clinical outcomes in patients with low back pain presenting for chiropractic care? A matched observational study." Jenkins et al., Chiropractic & Manual Therapies 2021;29:46.

Chiropractic & manual therapies·2022
Same author

Radiography and Clinical Decision-Making in Chiropractic.

Dose-response : a publication of International Hormesis Society·2021
Same author

Response to "Forces of Commonly Used Chiropractic Techniques for Children: A Review of the Literature".

Journal of manipulative and physiological therapeutics·2017
Same author

Exploratory evaluation of the effect of axial rotation, focal film distance and measurement methods on the magnitude of projected lumbar retrolisthesis on plain film radiographs.

Journal of chiropractic medicine·2014
Same author

Computer modeling of selected projectional factors of the 84-in focal film distance anteroposterior full spine radiograph compared with 40-in focal film distance sectional views.

Journal of chiropractic medicine·2011
Same author

Movement of the projected pedicles relative to the projected vertebral body in a fourth lumbar vertebra during axial rotation.

Journal of manipulative and physiological therapeutics·2004

Related Experiment Video

Updated: Feb 19, 2026

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
07:43

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

Published on: July 2, 2021

3.7K

A Proposed Mathematical Method to Quantify y-Axis Pelvic Rotation on the Anteroposterior Radiograph.

Roger R Coleman1, Mark A Lopes1,2, Derek A Lopes3

  • 1Gonstead Clinical Studies Society, Santa Cruz, California.

Journal of Chiropractic Medicine
|November 4, 2017
PubMed
Summary
This summary is machine-generated.

Researchers developed a new method to accurately measure pelvic y-axis rotation on anteroposterior (A-P) radiographs, addressing potential errors in the Gonstead method. This technique enhances the precision of pelvic alignment analysis in chiropractic practice.

Keywords:
ChiropracticRadiography

More Related Videos

Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse
07:41

Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse

Published on: April 17, 2019

10.5K
Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy
08:15

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy

Published on: February 17, 2023

1.5K

Related Experiment Videos

Last Updated: Feb 19, 2026

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
07:43

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

Published on: July 2, 2021

3.7K
Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse
07:41

Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse

Published on: April 17, 2019

10.5K
Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy
08:15

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy

Published on: February 17, 2023

1.5K

Area of Science:

  • Chiropractic biomechanics
  • Radiographic analysis
  • Spinal alignment

Background:

  • The Gonstead method, a chiropractic technique, may have inaccuracies in pelvic alignment analysis due to y-axis rotation on anteroposterior (A-P) radiographs.
  • Pelvic rotation can significantly impact the accuracy of chiropractic assessments.

Purpose of the Study:

  • To propose and describe a novel mathematical method for quantifying pelvic y-axis rotation from A-P radiographs.
  • To improve the precision of pelvic alignment measurements in chiropractic evaluations.

Main Methods:

  • Measurements are taken from the patient and their lateral and A-P radiographs.
  • A mathematical formula incorporating focal film distance is used to calculate the degree of pelvic rotation.
  • This method aims to provide a quantitative assessment of pelvic y-axis rotation.

Main Results:

  • The proposed method offers a way to determine the magnitude of pelvic y-axis rotation on A-P radiographs.
  • This approach has the potential to increase the accuracy of pelvic rotation measurements.

Conclusions:

  • A new method has been established to calculate the magnitude of pelvic y-axis rotation present on A-P radiographs.
  • This technique can aid chiropractors in achieving more precise pelvic alignment assessments.