位置:坐位或侧卧位,脊柱充分前屈以扩大椎间隙。4、5腰椎棘突间,在脊髓末端之下不易损伤脊髓。Supraspinous ligament棘上韧带Superficial fascia and deep fascia浅筋膜与深筋膜Filum terminale终丝Interspinous ligament棘间韧带Subarachnoid space蛛网膜下隙Cauda equina马尾Ligamentum flavum黄韧带CSF脑脊液. ......