The nerve root sedimentation sign in diagnosis of lumbar spinal stenosis
| Autor: | David Elias, Wojciech Wawrzynek, Andrzej Lekstan, Robert Król, Małgorzata Piechota |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Adult
Male Dorsum Nerve root Sedimentation (water treatment) 030218 nuclear medicine & medical imaging Young Adult 03 medical and health sciences Spinal Stenosis 0302 clinical medicine Medical imaging medicine Humans Radiology Nuclear Medicine and imaging Aged Retrospective Studies Lumbar Vertebrae Radiological and Ultrasound Technology medicine.diagnostic_test business.industry Lumbosacral Region Reproducibility of Results Lumbar spinal stenosis Magnetic resonance imaging General Medicine Anatomy Middle Aged medicine.disease Magnetic Resonance Imaging 030220 oncology & carcinogenesis Female Spinal Nerve Roots business Sign (mathematics) |
| Zdroj: | Acta Radiologica. 60:634-642 |
| ISSN: | 1600-0455 0284-1851 |
| DOI: | 10.1177/0284185118795322 |
| Popis: | Background The nerve root sedimentation sign is a magnetic resonance (MR) sign, shown to be present in central lumbar spinal stenosis. The lack of sedimentation of the nerve roots to the dorsal part of the dural sac is consistent with the positive nerve root sedimentation sign. Purpose To validate the reliability of the nerve root sedimentation sign in diagnosis of different grades of lumbar spinal canal stenosis. Material and Methods This study was a retrospective review of 101 consecutive MR imaging (MRI) studies obtained on patients with clinically suspected lumbar canal stenosis. Based on the minimum anteroposterior (AP) diameter of the dural sac the study sample was classified into two groups: a group with morphological lumbar spinal stenosis; and the group of patients free from stenosis (AP > 12 mm). Patients with stenosis were further subclassified based on its severity: severe stenosis (AP ≤ 10 mm); and moderate stenosis (AP > 10 mm to ≤ 12 mm). Results Positive sedimentation sign was identified in 81% of patients with severe lumbar spinal stenosis and 14% of patients with moderate stenosis. No patients without lumbar spinal stenosis had a positive nerve root sedimentation sign. Of patients with a positive nerve root sedimentation sign, 89% presented with neurological claudication. Conclusion The nerve root sedimentation is a useful tool for identification of patients with both severe clinical and morphological lumbar spinal stenosis; however, its performance in the diagnosis of patients with moderate morphological spinal stenosis is poor. |
| Databáze: | OpenAIRE |
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