盘黄间隙狭窄对腰骶神经根的影响──解剖与CTM扫描动态学研究

ANATOMIC AND DYNAMC CTM STUDY OF RELATIONSHIP BETWEEN DISC-FLAVA LIGAMENT SPACE AND LUMBOSACRAL NERVOUS ROOTS

作者从解剖、动态ＣＴＭ扫描两方面就腰骶椎管内盘黄间隙的结构和这一结构与神经根的关系，及可能对神经根造成的影响做了观察研究。发现：间盘外侧方后缘膨出或突出，黄韧带和小关节增厚／肥大可使这一间隙狭窄，并嵌夹或推挤腰骶神经根，产生相应临床症状与体征。认为：盘黄间隙系腰骶神经根管之非骨性区段。由于间隙大小可随腰伸屈运动变化，神经根受压亦随之加重、减轻或消失。临床出现的神经源性间歇性破行可能与这一致病特点有密切关系。动态ＣＴＭ扫描对此具有准确的识别作用。

The structure of disc-flava ligament space(DFLS)and the relationship be weenDFLS and nervous roots had been studied by means of anatomy and dynamic CTM.posterolateral bulge or herniation of disc,thicken flava ligament and proliferation offacets resulted in narrowness of DFLS,which compressed lumbosaeral nervous roots.Weconsidered that DFLS was situated in non-osseous segment of lumbosacral nervous rootcanals,it changed obviously with lumbar spine flextion or extension,so that compressionof nervous roots was aggravated or relieved with lumbar motions,and may be relaxedto nervous claudication. Dynamic CTM had important roles in diagnosis of the disease.