Correlation between Spinal Canal Stricture and Increased Signal Intensity in Ossification of Posterior Longitudinal Ligament
Abstract：Objective To investigate the correlation of spinal canal stricture and intramedullary increased signal intensity (ISI) in pa-tients with ossification of the posterior longitudinal ligament (OPLL). Methods 92 patients with OPLL were divided into 3 groups, those with the sagittal diameter remained≥66.7%were as group A, 33.3%~66.7%as group B, and<33.3%as group C. The incidence of intramed-ullary ISI was recorded, and their neurological condition was assessed with the Japanese Orthopedics Association Assessment (JOA). Re-sults ISI were found in 6 cases in the group A (20.7%), 17 cases in the group B (47.2%) and 19 cases in the group C (70.4%) (P<0.05). The score of JOA was (7.1±2.1) in the group A, (6.0±1.8) in the group B and (5.6±2.0) in the group C (P<0.05). Conclusion The incidence of in-tramedullary ISI increased with the severity of spinal canal stricture, and with more severe nerve damage in OPLL patients.
Keywords：cervical spineposterior longitudinal ligamentossificationintramedullary increased signal intensityneurological function
Publication Date：2013-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 1069-1071 )