Hypoplasia of vertebral body and facet joint at L5.

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Presentation transcript:

Hypoplasia of vertebral body and facet joint at L5. Hypoplasia of vertebral body and facet joint at L5. Correlation with conventional radiographs and CT scan. A, Midsagittal T2-weighted spin-echo image. Reduced anteroposterior diameter of L5 with posterior wedging. Minimal anterolisthesis L5 on S1. The intervertebral disk at L4-L5 is dehydrated. The intervertebral disk at L5-S1 is normal. B, Conventional radiographs. Confirmation of the L5 hypoplasia and the isthmolysis. C, Spiral CT scan, midsagittal reconstruction. Confirmation of the L5 hypoplasia. D, Spiral CT scan, lateral reconstruction. Notice isthmolysis at L5. The facet joint at L5 is clearly hypoplastic. G. Wilms et al. AJNR Am J Neuroradiol 2009;30:674-680 ©2009 by American Society of Neuroradiology