Correlation between Spinal Canal Stricture and Increased Signal Intensity in Ossification of Posterior Longitudinal Ligament

VernacularTitle:颈椎后纵韧带骨化症脊髓压迫程度与髓内高信号的相关性研究
Author: Xiwei HUO ; Chengdong HU ; Huaizhi CHEN ; Yujun ZHOU ; Dongfeng LI ; Rui WANG ; Fei WANG
Publication Type:Journal Article
Keywords: cervical spine, posterior longitudinal ligament, ossification, intramedullary increased signal intensity, neurological function
From: Chinese Journal of Rehabilitation Theory and Practice 2013;19(11):1069-1071
CountryChina
Language:Chinese
Abstract: Objective To investigate the correlation of spinal canal stricture and intramedullary increased signal intensity (ISI) in patients 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 intramedullary ISI was recorded, and their neurological condition was assessed with the Japanese Orthopedics Association Assessment (JOA). Results 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 intramedullary ISI increased with the severity of spinal canal stricture, and with more severe nerve damage in OPLL patients.