Relative risk factors of nerve root sedimentation sign (SedSign) in patients with severe central lumbar spinal stenosis (LSS). Issue 1 (31st December 2023)

• Record Type: Journal Article
• Authors: Yu, Haiming; Han, Yunfeng; Zhang, Rui; Sun, Chu; Wang, Mingda; Yue, Bo; Chou, Kaiping; Li, Bin; Zhang, Nan
• Is Part Of: All life. Volume 16:Issue 1(2023)
• Publication Date: 2023-12-31
• Subjects: Lumbar spinal stenosis (LSS) -- nerve root sedimentation sign (Sedsign) -- difference cross-sectional area difference (CSAD) -- thickness of ligamentum flavum (TLF) -- grade of degenerative facet joint (DFJ); Life sciences -- Periodicals; Biology -- Periodicals; Electronic journals; Periodicals; 570.5
• DOI: 10.1080/26895293.2023.2172460
• Languages: English
• ISSNs: 2689-5293

Abstract

Abstract : The incidence of nerve root sedimentation sign (SedSign) was evaluated to explore potential pathogenesis in patients with severe lumbar spinal stenosis (LSS). In a total of 209 patients with severe LSS, 290 intervertebral levels were narrow, among which 248 showed a positive SedSign, giving a prevalence of 85.52%. Those levels with a positive SedSign were further analyzed relative to those with a negative SedSign. There was no significant difference between the two groups for the cross-sectional area (CSA) or the posteroanterior diameter (PAD). In contrast, there was a significant difference between the groups for the grade of degenerative facet joint (DFJ) ( p < 0.05), the thickness of ligamentum flavum (TLF) ( p < 0.01), and the cross-sectional area difference (CSAD) ( p < 0.01). In addition, receiver operating characteristic (ROC) curves were used to identify associated factors. The area under the ROC curve for PAD was 0.608 ( p < 0.05), for DFJ was 0.634 ( p < 0.05), for TLF was 0.74 ( p < 0.01), and for CSAD was 0.911 ( p < 0.01). In summary, a positive SedSign has notable advantages in assisting with the diagnosis of severe LSS. Compression of the dural sac from the rear may be the main risk factors of a positive SedSign.