Singer K P, Breidahl P D
Department of Anatomy and Human Biology, University of Western Australia, Nedlands.
Surg Radiol Anat. 1990;12(1):53-8. doi: 10.1007/BF02094126.
A survey of 810 thoracolumbar junction CT scans demonstrated several forms of accessory ossification centres and vestigial ribs associated with the posterior element processes. Four examples of short T12 ribs and 15 L1 ribs were identified, in addition to 8 accessory ossification centres at L1, and 3 at T12. Radiographic features of accessory ossification centres were compared with histologic characteristics from cadaver studies. Accessory ossification centres have occasional clinical significance when they may be confused with fractures at the thoracolumbar junction. Differential diagnosis relies on adequate visualization of their cortical margins to distinguish them from recent fractures of the processes.
一项对810例胸腰段交界区CT扫描的研究显示，存在几种与后部椎体附件相关的副骨化中心和残留肋骨形式。除了在T12发现3个、L1发现8个副骨化中心外，还识别出4例短T12肋骨和15例L1肋骨。将副骨化中心的影像学特征与尸体研究的组织学特征进行了比较。当副骨化中心可能与胸腰段交界区骨折相混淆时，它们偶尔具有临床意义。鉴别诊断依赖于充分显示其皮质边缘，以将它们与椎体附件的新鲜骨折区分开来。
