Directory For a Sex Photos : radiologysigns: The dagger sign is a radiographic feature seen in ankylosing spondylitis as single central radiodense line on frontal radiographs related to ossification of supraspinous and interspinous ligaments.
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» radiologysigns: The dagger sign is a radiographic feature seen in ankylosing spondylitis as single central radiodense line on frontal radiographs related to ossification of supraspinous and interspinous ligaments.