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Related Experiment Videos

Lumbar discography in normal subjects. A controlled, prospective study.

T R Walsh¹, J N Weinstein, K F Spratt

¹Department of Orthopaedic Surgery, University of Iowa Hospitals and Clinics, Iowa City 52242.

The Journal of Bone and Joint Surgery. American Volume

|August 1, 1990

Summary

This study replicated and extended research on discography, finding high reliability in pain assessment during the procedure. Discography showed abnormalities in asymptomatic individuals, highlighting its diagnostic value for low-back pain.

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Area of Science:

Orthopedics
Pain Management
Radiology

Background:

Advances in discography techniques and pain evaluation methods.
Need to replicate and extend previous research on discography specificity.

Purpose of the Study:

To replicate and extend Holt's work on the specificity of discography.
To evaluate the reliability of pain assessment during discography.

Main Methods:

Seven low-back pain patients and ten asymptomatic volunteers underwent discography at three levels.
Participants were interviewed about pain post-injection; discs were imaged via CT.
Five blinded raters evaluated MRI and CT (discography) findings; pain responses were videotaped and rated.

Main Results:

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High inter-rater reliability (0.88–0.99) was achieved for pain intensity, behavior, and similarity.
Only one disagreement occurred between MRI and discography ratings.
Discography showed abnormalities in 17% of asymptomatic individuals' discs.

Conclusions:

Discography demonstrates high reliability in pain assessment.
Abnormal findings in asymptomatic individuals suggest discography's utility in diagnosing low-back pain.
The study validates discography as a reliable diagnostic tool for spinal pain evaluation.