Osteoarthritis of the hip (grading)
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was changed:
Osteoarthritis of the hip can be graded according to severity on imaging.
Conventional radiograph grading
- 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
MRI grading
- grade 0: normal
- grade 1: inhomogeneous high signal intensity in cartilage (T2WI)
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grade 2: inhomogeneity with areas of high signal intensity in articular cartilage (T2WI); indistinct
trabaculaetrabeculae or signal intensity loss in femoral head & neck (T1WI) - grade 3: criteria of grade 1 and 2 plus indistinct zone between femoral head & acetabulum; subchondral signal loss due to bone sclerosis
- grade 4: above criteria plus femoral head deformity
-<strong>grade 2:</strong> definite joint space narrowing, defined osteophytes and some sclerosis, especially in acetabular region</li>- +<strong>grade 2:</strong> definite joint space narrowing, defined osteophytes and some sclerosis, especially in the acetabular region</li>
-<strong>grade 2:</strong> inhomogeneity with areas of high signal intensity in articular cartilage (T2WI); indistinct trabaculae or signal intensity loss in femoral head & neck (T1WI)</li>- +<strong>grade 2:</strong> inhomogeneity with areas of high signal intensity in articular cartilage (T2WI); indistinct trabeculae or signal intensity loss in femoral head & neck (T1WI)</li>
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