McCormick C C, Taylor J R, Twomey L T
Department of Diagnostic Radiology, Royal Perth Hospital, Australia.
Radiology. 1989 Apr;171(1):193-6. doi: 10.1148/radiology.171.1.2928525.
Facet arthrograms in patients with lumbar spondylolyses show spread of contrast medium through pars interarticularis defects into the adjacent ipsilateral facet joint space and across the midline into the contralateral joint space. Transverse and sagittal sections of facet joints from 141 postmortem lumbar spines were studied. Five examples of spondylolysis were found. Anatomic studies of the relationship of the joint recesses to the pars interarticularis demonstrated the basis for the patterns of spread of contrast medium observed radiographically in this and previous series. The pars interarticularis forms the only boundary between the inferior recess of one facet joint and the superior recess of the adjacent joint. Fracture through the pars interarticularis establishes communication between adjacent ipsilateral joints and opens a communication to the retrodural space, through which contrast medium can track to the contralateral joint.
腰椎峡部裂患者的小关节造影显示，造影剂通过关节间部缺损扩散到同侧相邻小关节间隙，并穿过中线进入对侧关节间隙。对141例尸体腰椎小关节的横切面和矢状面进行了研究。发现了5例峡部裂病例。对关节隐窝与关节间部关系的解剖学研究揭示了在此系列及以往系列中影像学观察到的造影剂扩散模式的基础。关节间部构成了一个小关节下隐窝与相邻关节上隐窝之间的唯一边界。关节间部骨折在同侧相邻关节之间建立了连通，并开通了与硬膜后间隙的连通，造影剂可通过该间隙追踪至对侧关节。
