From the case: Ankylosing spondylitis

X-ray
Frontal
Systems: Musculoskeletal
Section: Signs
Tags: spine
Modality: X-ray (Frontal)

- “ Advanced appearances of ankylosing spondylitis exhibiting two classical signs: bamboo spine dagger sign ”

Used in the following articles:

  • Dagger sign (spine) - “ The dagger sign is a radiographic feature seen in ankylosing spondylitis as a single central radiodense line on frontal radiographs related to oss...”
  • Bamboo spine - “ Bamboo spine is a radiographic feature seen in ankylosing spondylitis that occurs as a result of vertebral body fusion by marginal syndesmophytes....”

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