Skeletal radiology
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This study aimed to determine the diagnostic value of the nerve root sedimentation sign, a relatively new radiological sign using magnetic resonance imaging, for diagnosing lumbar spinal stenosis. ⋯ Current evidence suggests that the sedimentation sign has high sensitivity and specificity for diagnosing severe lumbar spinal stenosis. Its performance in diagnosing moderate and mild spinal stenosis, however, has yet to be corroborated in properly designed studies.