50例腰椎管狭窄症临床及影像学研究

目的 探讨影像学在椎管狭窄诊断中的价值。方法 对50例腰椎管狭窄的X线、CT、MRI表现进行回顾性分析。腰椎管狭窄分为四度：0度、I度(轻度)、Ⅱ度(中度)、Ⅲ度(重度)。结果 椎管狭窄位于L3，4平面6例，L4，5水平者29例，位于L5，S1平面者15例。CT及MRI显示单纯黄韧带肥厚者12例；椎间盘突出并黄韧带肥厚致腰盘黄间隙狭窄13例；椎体后缘骨质增生突入椎管者8例，椎体后缘增生并小关节突增生肥大16例，后纵韧带骨化1例。椎管狭窄I度26例，Ⅱ度10例，Ⅲ度14例。结论 腰椎管狭窄是临床常见病和多发病。传统X线检查有其局限性，CT和MRI无创，能够准确显示腰椎管狭窄的解剖学和部分组织学改变。

Imaging study of lumbar spinal canal stenosis in 50 cases

Objective To assess the clinical value of imaging examination for diagnosing lumbar spinal canal stenosisc (LSCS).Methods X- ray,CT and MRI features in 50 cases with LSCS were retrospectively analyzed.LSCS in the group patients was divided into four degrees.Results 6 cases lied in spinl canal between third and fourth lumbar, 29 cases lied in spinal canal between fourth and fifth lumbar, 15 cases lied between fifth lumbar and first sacrum.CT and MRI examination demonstrated simple ligamentum flavum thickening(LFT)in 12 cases disc herniation and LFT in 13 cases,lumbar posterior marginal osteophytes(LPMO)in 8 cases.LPMO and the joint process superior osteophytes in 16 cases.There were mild LSCS in 26,moderate LSCS in 10,severe LSCS in 14.Conclusion LSCS is the commonly seen and frequently occurring clinical disease.CT and MRI are uninjured effective imaging modalities for detecting and diagnosing LSCS and they are superior to plainfilm for revealing the anatomic and histologic changes of LSCS. [