下腰段硬膜囊的X线测量  

RADIOLOGICAL MEASUREMENT OF THECAL SAC IN THE LOWER LUMBAR REGION

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作  者:侯筱魁[1] 虞伟琪 石关桐[2] 

机构地区:[1]上海第二医科大学附属第九人民医院骨科 [2]上海中医学院附属岳阳医院伤骨科

出  处:《上海医学》1988年第6期344-346,共3页Shanghai Medical Journal

摘  要:本文收集水溶剂腰脊髓造影片250份,测量下腰段正常显影节段的硬膜囊横径、矢状径、硬膜囊前间隙宽度和其终端的解剖定位。测量结果说明从腰3以下硬膜囊径趋于减小,而骨性椎管径逐渐增大,硬膜外间隙相应增宽。因此,测量硬膜囊的大小能真正反映骨纤维性椎管的大小,这对退行性腰椎管狭窄症的诊断有一定的价值。另外,腰5骶,硬膜囊前间隙宽度约为腰4,5的2倍。硬膜囊终端的位置有87%在骶1,2水平,最低位达到骶3平面。Two hundred fifty Iumbar myelograms using a water soluble medium were studied.Thetransverse and anteroposterior diameters of the thecal sac,the space between the thecal sacand the posterior surface of the vertebral body and anatomical location of the terminalend of the thecal sac were measured.The diameters of the thecal sac tended to decreasebelow the level of the L3 vertebra,while diameters of the bony spinal canal graduallyincreased and the epidural space correspondingly became wider.The cpidulal space infront of the thecal sac at L5-S1 level was two times that at the L4-5 level.The terminalend of the thccal sac was at S1-2 in 87%of the cases,the lowest being at S3 level(2%).The results indicate that measuring the size of the thecal sac may be taken as an indirect measurement of the bony fibrous spinal canal and the result of such simple procedure would be of value in the diagnosis of degenerative spinal stenoscs.

关 键 词:硬膜囊 横径 节段 左右径 矢状径 脊髓造影片 

分 类 号:R68[医药卫生—骨科学]

 

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