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目的 :描述 60岁以上老年人脊椎狭窄的有关CT表现及测量 ,探讨老年人脊椎狭窄的特征。方法 :采用CT横断面薄层扫描 ,并测量硬膜囊矢状径、黄韧带前间隙、侧隐窝宽度 ,分析它们与脊髓和 /或神经根受压的关系。结果 :硬膜囊矢状径≤ 10mm、黄韧带前间隙 <5mm ,侧隐窝宽度≤ 3mm ,常提示压迫脊髓或神经根。结论 :老年人椎管狭窄多有椎骨小关节及侧隐窝狭窄 ,而黄韧带前间隙 <5mm是神经根压迫较为可靠的依据。
Objective: To describe CT findings and measurements of spine stenosis in the elderly over 60 years old and to explore the characteristics of spine stenosis in the elderly. Methods: CT scan of the thin section was performed. The sagittal diameter of the dural sac, the anterior gap of the ligamentum flavum and the width of the lateral recess were measured. Their relationship with spinal cord and / or nerve root compression was analyzed. Results: The dural sac sagittal diameter ≤ 10mm, the anterior ligamentum flavum <5mm, lateral recess width ≤ 3mm, often prompted to impose spinal cord or nerve root. Conclusion: There are many vertebral stenosis in the elderly with vertebral facet joint and lateral recess stenosis, while the anterior gap of the ligamentum flavum <5mm is more reliable basis for nerve root compression.