Index to Chiropractic Literature
Index to Chiropractic Literature
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Sunday, September 7, 2025
Index to Chiropractic LiteratureIndex to Chiropractic LiteratureIndex to Chiropractic Literature
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ID 28393
  Title A further exploration of a proposed method to determine axial rotation on the anteroposterior pelvic radiograph
URL https://journal.parker.edu/article/139047-a-further-exploration-of-a-proposed-method-to-determine-axial-rotation-on-the-anteroposterior-pelvic-radiograph
Journal J Contemp Chiropr. 2025 ;8(1):170-179
Author(s)
Subject(s)
Peer Review Yes
Publication Type Article
Abstract/Notes

Objective: Axial rotation is a known confounder for clinicians seeking to measure the pelvis on the anteroposterior radiograph. This study examines if the y-axis rotation of a model, as seen on an anteroposterior radiograph, could be calculated by a mathematical method using a computer application.

Methods: A model was used to show 2 points, used in a previous study, to calculate anteroposterior radiographic y-axis pelvic rotation. The model was rotated 0 to 10 degrees in 2-degree increments. An anteroposterior radiograph of the model was obtained at each rotation point. A 3-member team worked together to determine the location of the 2 points of the model on each digital radiograph. The distance between the points along with the source image receptor distance and the distance of the model from the image receptor were entered into a computer application to calculate the y-axis (axial) rotation of the model. The degree of rotation of the model was compared to the rotation calculated by the computer.

Results: The difference between the 2 methods was less than 1 degree in all y-axis rotations measured.

Conclusion: The mathematical method appears applicable to clinical practice as it was able to calculate y-axis rotation of the model on the anteroposterior radiographs when compared to the mechanical rotation of the model on the y-axis to an accuracy of less than one degree.

Author keywords: Radiography; Chiropractic; Spine; Pelvis; Projection

This abstract is reproduced with the permission of the publisher. Click on the above link for free full text.

 
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