Osteoarthritis of the hip (grading)

Osteoarthritis of the hip can be graded according to the severity on imaging.


Plain radiograph
  • grade 0: normal
  • grade 1: possible joint space narrowing and subtle osteophytes
  • grade 2: definite joint space narrowing, defined osteophytes and some sclerosis, especially in the acetabular region
  • grade 3: marked joint space narrowing, small osteophytes, some sclerosis and cyst formation and deformity of femoral head and acetabulum
  • grade 4: gross loss of joint space with above features plus large osteophytes and increased deformity of the femoral head and acetabulum
  • grade 0: normal
  • grade 1: inhomogeneous high signal intensity in cartilage (T2WI)
  • grade 2: inhomogeneity with areas of high signal intensity in articular cartilage (T2WI); indistinct trabeculae or signal intensity loss in femoral head and neck (T1WI)
  • grade 3: criteria of grade 1 and 2 plus indistinct zone between femoral head and acetabulum; subchondral signal loss due to bone sclerosis
  • grade 4: above criteria plus femoral head deformity
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Article information

rID: 6310
Synonyms or Alternate Spellings:
  • Degenerative joint disease of the hip (grading)
  • DJD of the hip (grading)
  • OA of the hip (grading)
  • Osteoarthritis of the hip (staging)

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Cases and figures

  • Figure 1: anatomy of the hip joint
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  • Figure 2: changes in osteoarthritis
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  • Case 1: grade 3 on CT
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  • Case 2: grade 3 on plain film
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  • Case 3: grade 2
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