脊髓型颈椎病MRI信号改变与术后恢复的相关性分析

目的：探讨颈髓MRI高信号的存在能否作为脊髓型颈椎病（CSM）手术预后的预测指标。方法-53例CSM患者，男35例，女18例；病程6个月～7年，平均28．2个月。根据日本矫形外科学会（JOA）制定的脊髓功能评分标准对其手术前后疗效和MRI进行对比，观察脊髓内高信号与临床预后之间的关系。结果：所有患者均随访1～4年，平均2．5年。术前配加权存在高信号患者较正常信号患者往往病情重，术后恢复也不满意（P〈0．05）；少数单节段高信号患者可恢复良好，但多节段的高信号患者手术效果较差。结论：颈髓MRI高信号对CSM预后判断有重要意义。

Correlation between postop erative recovery and high MRI signal intensity of cervical spondylotic myelopathy

Objective:To investigate whether high signal intensit y of spinal cord could predict the progn osis of operation for cervical spondylot ic myelopathy (CSM). Methods:Fifty -three patients with CSM (35 male ,18 female;the courses of disease from 6 months to 7 years,with an average of 28.2 months) w ere examined with MR.The compar ison of outcome and high signal intensit y before and after operation were evaluated according to the J apanes e Orthopaedic Association (JOA) assessme nt criteria. Results: All the patients were followed up from o ne to four years with an average of 2.5 years.The clinical manifestation of patients with high signal inten sity on the preoperative T2-weighted MRI were worse than that of patients with nor mal sign al,and their postoperati ve recovery wasnot satisfied ( P<0.05).The multisegmental high sign al intensity on T2-weighted image indica ted poor outcome.However,few patients wi th monosegmented high signal intensity h ad good results. Conclusion:Hi gh signal intensity of spinal cord on MR I is significant for predicting the prognosis of the cervical spondylotic myelopathy.