Dagger sign (spine)

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The dagger sign is a radiographic feature seen in ankylosing spondylitis as a single central radiodense line on frontal radiographs related to ossification of the supraspinous and interspinous ligaments secondary to enthesitis².

-The dagger sign is a radiographic feature seen in <a href="/articles/ankylosing-spondylitis">ankylosing spondylitis</a> as a single central radiodense line on frontal radiographs related to ossification of the supraspinous and interspinous ligaments secondary to enthesitis.
+The dagger sign is a radiographic feature seen in <a href="/articles/ankylosing-spondylitis-1">ankylosing spondylitis</a> as a single central radiodense line on frontal radiographs related to ossification of the <a title="Supraspinous ligament" href="/articles/supraspinous-ligament">supraspinous</a> and <a title="Interspinous ligament" href="/articles/interspinous-ligament">interspinous</a> ligaments secondary to <a title="Enthesitis" href="/articles/enthesitis">enthesitis</a> 2.

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Dagger sign (spine)

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