Ito S
Department of Orthopaedic Surgery, Gifu Prefectural Tajimi Hospital.
Nihon Seikeigeka Gakkai Zasshi. 1988 Apr;62(4):345-58.
In order to estimate the clinical value of lumbar CT assisted discography (CTD), results obtained by this method were compared with histological findings of the cross section of the spine in fresh human cadavera. Based on these findings, preoperative CTD of lumbar disc herniation was investigated. In the discs of human cadavera, the contrast medium mainly invaded the fissures of nucleus pulposus and the ruptures of annulus fibrosus and then diffused to the surrounding tissues. These ruptures were classified into two categories: radial and circumferential. This identification was possible only in CTD and was obscure in the usual discogram. Not all the ruptures could be dyed in a severe degenerative disc, and a rupture which was not communicated with nucleus pulposus was not dyed in a mild degenerative disc. In the preoperative CTD of lumbar disc herniation, the posterior radial ruptures representing the route of herniated nuclei were characteristic and the circumferential ruptures were found complicated.
为评估腰椎CT辅助椎间盘造影术（CTD）的临床价值，将该方法所得结果与新鲜人尸体脊柱横断面的组织学 findings 进行比较。基于这些 findings，对腰椎间盘突出症的术前CTD进行了研究。在人尸体的椎间盘内，造影剂主要侵入髓核裂隙和纤维环破裂处，然后扩散至周围组织。这些破裂分为两类：放射状和环状。这种识别仅在CTD中可行，在常规椎间盘造影中则不明显。并非所有破裂在严重退变的椎间盘中都能被染色，在轻度退变的椎间盘中，与髓核不连通的破裂则不能被染色。在腰椎间盘突出症的术前CTD中，代表突出髓核路径的后放射状破裂具有特征性，而环状破裂则较为复杂。
