Sacroiliitis grading (New York criteria)

Sacroiliitis grading can be achieved using plain radiographs 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

Article information

rID: 2013
Synonyms or Alternate Spellings:
  • Sacroiliitis grading
  • Grading of sacroiliitis
  • Plain film grading of sacroiliitis
  • New York criteria for grading sacroileitis

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Cases and figures

  • Case 1: grade 0
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  • Case 2: grade I
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  • Case 3: grade II
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  • Case 4: grade III
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  • Case 5: grade IV
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