Variability in knee radiographing: implication for definition of radiological progression in medial knee osteoarthritis
Article Abstract:
The minimum change in the knee joint space width (JSW) needed to confirm the progression of osteoarthritis is reported. Disease progression is usually assessed by measuring JSW on an X-ray of the knee. However, this measurement will vary when many additional X-rays are taken over a period of time. The minimum change must exceed this natural variability. Based on a study of healthy patients and those with osteoarthritis, the minimum change ranged from 0.59 millimeters (mm) to 1.29 mm, depending on whether guidelines and fluoroscopy were used to assist in measuring JSW.
Publication Name: Annals of the Rheumatic Diseases
Subject: Health
ISSN: 0003-4967
Year: 1998
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Radiological progression of hip osteoarthritis: definition, risk factors and correlations with clinical status
Article Abstract:
Changes in joint space width in the hip joint may be used to define progression of osteoarthritis. Researchers measured changes in the joint space of the hip at baseline and one year later in 461 osteoarthritis patients aged 50 to 75 years old. A change of 0.6 millimeters or more was associated with measures of deterioration such as pain, functional impairment, and increased amounts of medication. Patients experiencing progression were more likely to be women, to experience migration of the head of the thigh bone, to have worse functioning, and to be older than 65.
Publication Name: Annals of the Rheumatic Diseases
Subject: Health
ISSN: 0003-4967
Year: 1996
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Are radiological joint space widths of normal hips asymmetrical?
Article Abstract:
There is a definite asymmetry between the size of hip joints in some individuals, and there is a predictable frequency and limit to size of that difference. Examination of 171 normal subjects demonstrated that it was within normality to have variance. That amount of variance in a normal person will be less than 0.7 mm at the superointermediate location; less than 1.0 mm at the superolateral; and less than 0.9 at the superomedial.
Publication Name: Annals of the Rheumatic Diseases
Subject: Health
ISSN: 0003-4967
Year: 1999
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