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

Coleman, Roger R.; Cremata, Edward; Lopes, Mark A.; Suttles, Rick A.; Fairbanks, Vaughn R.

doi:10.1016/j.jcm.2014.09.001

Cited by 4 publications

(3 citation statements)

References 20 publications

(29 reference statements)

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“… 50 Shear and torsion force directions are also the most common HVLA/SM forces. For example, if one pushes posterior to anterior on L5 where a measureable subclinical retrolisthesis of L4 on L5 exists, 53 there is a potential for further injury to L4-5 articular soft tissues due to the weakness of the discs, capsules, and/or ligaments that originally caused the pre-existing retrolisthesis. Similarly, in the presence of spondylolisthesis, spondylolysis, or anterolisthesis in any spine region, posterior to anterior shear force should be avoided at that level.…”

Section: Discussionmentioning

confidence: 99%

“…Radiographic imaging allows the measurement of the magnitude and direction of intersegmental and regional malalignment not offered by non–imaging-based procedures. 53 , 78 - 80 Additionally, if a force is repeatedly applied in a direction that would increase spinal malalignment, it is logical that this may cause harm and should be avoided whenever possible.…”

Section: Outcome Measurementsmentioning

confidence: 99%

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Radiography and Clinical Decision-Making in Chiropractic

Lopes¹,

Coleman²,

Cremata³

2021

Dose-Response

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The concern over x-ray exposure risks can overshadow the potential benefit of radiography, especially in cases where manual therapy is employed. Spinal malalignment cannot be accurately visualized without imaging. Manual therapy and the load tolerances of injured spinal tissues raise different criteria for the use of x-rays for spinal disorders than in medical practice. Current regulatory bodies rely on radiography risk assessments based on Linear-No-Threshold (LNT) risk models. There is a need to consider radiography guidelines for chiropractic which are different from those for medical practice. Radiography practice guidelines are summaries dominated by frequentist interpretations in the analysis of data from studies. In contrast, clinicians often employ a pseudo-Bayesian form of reasoning during the clinical decision-making process. The overrepresentation of frequentist perspectives in evidence-based practice guidelines alter decision-making away from practical assessment of a patient’s needs, toward an overly cautious standard applied to patients without regard to their risk/benefit likelihoods relating to radiography. Guidelines for radiography in chiropractic to fully assess the condition of the spine and spinal alignment prior to manual therapy, especially with high velocity, low amplitude spinal manipulation (HVLA-SM), should necessarily differ from those used in medical practice.

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Section: Discussionmentioning

confidence: 99%

Section: Outcome Measurementsmentioning

confidence: 99%

Radiography and Clinical Decision-Making in Chiropractic

Lopes¹,

Coleman²,

Cremata³

2021

Dose-Response

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“…In previous projection error-related studies of other areas of the spine, it was found that with increasing degree of rotation, the ability to accurately measure vertebral alignment decreases, with findings in one study suggesting that rotations of more than 10°decreased the accuracy of retrolisthesis measurement. 8,9 Therefore, 10°of pelvic rotation was chosen for this example.…”

Section: Discussionmentioning

confidence: 99%

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

Coleman¹,

Lopes²,

Lopes

2017

Journal of Chiropractic Medicine

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Objective: Researchers have identified potential errors in the Gonstead method's analysis of pelvic alignment resulting from y-axis rotation of the pelvis on the anteroposterior (A-P) radiograph. The purpose of this article is to propose a method that can be used to determine the magnitude of y-axis rotation of the pelvis present on the A-P radiograph. Methods: In this proposed method, measurements are obtained from the patient and from the lateral and A-P radiographs. With a mathematical method, these measurements are used with the focal film distance to calculate the degree of pelvic rotation present on an individual A-P radiograph.Results: This method may help with the accuracy of measurement of pelvic y-axis rotation on the A-P radiograph. Conclusion: The method proposed can be used to calculate the magnitude of pelvic y-axis rotation on an A-P radiograph. (J Chiropr Med 2017;16:204-210)

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Slip progression in degenerative lumbar spondylolisthesis following minimally invasive decompression surgery is not associated with increased functional disability

et al. 2020

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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

Abstract: This study demonstrated that lumbar vertebral rotation, focal film distance, and measurement methods are potential sources of error in retrolisthesis measurement.

Cited by 4 publications

References 20 publications

Radiography and Clinical Decision-Making in Chiropractic

Radiography and Clinical Decision-Making in Chiropractic

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

Slip progression in degenerative lumbar spondylolisthesis following minimally invasive decompression surgery is not associated with increased functional disability

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