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Radiology of seronegative spondyloarthritis

  • MRI preferred for early detection of inflammation (sacroiliitis)
  • Plain films detect late structural changes (SI erosions/sclerosis)
  • Calcification of spinal ligaments with bridging symmetrical syndesmophytes (known as “bamboo spine”)
  • Squaring and generalized demineralization of vertebral bodies (known as “shiny corners”)