Abstract
Of the 692 discs injected during lumbar discograms, end-plate disruptions with leakage of contrast material into the vertebral bodies were noted in 14 discs. Although gentle pressure was applied during the injections, severe fully concordant pain was reproduced in four (28.3%) discs, moderately severe and fully concordant pain in nine (64.3%) discs, and mild discordant pain in one (7.4%) disc. This is compared to 11.2% of the remaining 678 discs without end-plate disruption that reproduced severe concordant pain, 31.1% with moderately severe concordant pain, 17.1% with mild pain, and 40.6% without any pain reproduction. The difference between pain frequency in discs with end-plate disruption and those without is statistically significant (P less than .001). This suggests that end-plate disruptions may be related to painful segments.
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