PMID: 11312380Apr 20, 2001Paper

Measurement of joint space width in hip osteoarthritis: influence of joint positioning and radiographic procedure

Rheumatology
G R AuleleyP Ravaud

Abstract

We assessed the influence of patient positioning and radiographic procedure, and defined a smallest detectable difference (SDD) in hip osteoarthritis (OA). OA hip patients each had a standardized pelvic radiograph and, 5 min later, a modified pelvic radiograph with the feet internally rotated 5 degrees (part 1 of the study), the X-ray beam centred on the umbilicus (part 2), or another standardized pelvic radiograph (part 3). Corresponding mean differences in joint space width (JSW) measurements (limits of agreement) between views were +0.03 (-0.53 to +0.59), -0.31 (-1.15 to +0.53) and -0.02 (-0.48 to +0.44) mm. The two views differed significantly in mean JSW in part 2 of the study (P=1.6x10(-4)), but not in part 1 (P=0.375) and part 3 (P=0.580). The SDD estimate was 0.46 mm. Modifying the X-ray beam and foot rotation increases variability in JSW measurements. Use of urograms to evaluate radiological progression should be avoided. A change greater than 0.46 mm could define radiological hip OA progression.

Citations

Aug 19, 2011·Skeletal Radiology·Carl S Winalski, Prabhakar Rajiah
Feb 11, 2004·Joint, Bone, Spine : Revue Du Rhumatisme·Pascal Richette, Thomas Bardin
Oct 14, 2004·Annals of the Rheumatic Diseases·M ReijmanS M A Bierma-Zeinstra
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Nov 30, 2010·BMC Musculoskeletal Disorders·Jonas FranklinStefan Lohmander
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Apr 1, 2009·Arthritis and Rheumatism·Nigel K ArdenMichael Nevitt
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May 23, 2015·The Journal of Orthopaedic and Sports Physical Therapy·Ingrid EitzenMay Arna Risberg
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Jan 13, 2015·Joint, Bone, Spine : Revue Du Rhumatisme·Paul OrnettiJean-Francis Maillefert
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Apr 22, 2016·The Journal of Bone and Joint Surgery. American Volume·Travis MatheneyUNKNOWN ANCHOR Study Group
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Oct 18, 2003·The Journal of Bone and Joint Surgery. American Volume·Young-Jo KimDeborah Burstein
Mar 16, 2021·Journal of Clinical Orthopaedics and Trauma·Henrik C BäckerCarsten Perka

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