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Sacroilitis grading

Sacroilitis grading can be achieved using plain films according to the New York criteria 4.

  • grade 0 - normal
  • grade I -  some blurring of the joint margins - suspicious
  • grade II - minimal sclerosis with some erosion
  • grade III -
    • definite sclerosis on both sides of joint 5
    • severe erosions with widening of joint space with or without ankylosis
  • grade IV - complete ankylosis

See also

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