Article (Scientific journals)
Minimum joint space width (mJSW) of patellofemoral joint on standing "skyline" radiographs: test-retest reproducibility and comparison with quantitative magnetic resonance imaging (qMRI)
SIMONI, Paolo; Jamali, Sanaa; Albert, Adelin et al.
2013In Skeletal Radiology, 42 (11), p. 1573-82
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Minimum joint space width (mJSW) of patellofemoral joint on standing skyline radiographs test-retest reproducibility and comparison with quantitative magnetic resonance imaging (qMRI).pdf
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Keywords :
Patellofemoral joint; Radiography; Magnetic; resonance imaging; articular cartilage; osteoarthritis knee; adult
Abstract :
[en] OBJECTIVE: To assess the intraobserver, interobserver, and test-retest reproducibility of minimum joint space width (mJSW) measurement of medial and lateral patellofemoral joints on standing "skyline" radiographs and to compare the mJSW of the patellofemoral joint to the mean cartilage thickness calculated by quantitative magnetic resonance imaging (qMRI). MATERIALS AND METHODS: A couple of standing "skyline" radiographs of the patellofemoral joints and MRI of 55 knees of 28 volunteers (18 females, ten males, mean age, 48.5 +/- 16.2 years) were obtained on the same day. The mJSW of the patellofemoral joint was manually measured and Kellgren and Lawrence grade (KLG) was independently assessed by two observers. The mJSW was compared to the mean cartilage thickness of patellofemoral joint calculated by qMRI. RESULTS: mJSW of the medial and lateral patellofemoral joint showed an excellent intraobserver agreement (interclass correlation (ICC) = 0.94 and 0.96), interobserver agreement (ICC = 0.90 and 0.95) and test-retest agreement (ICC = 0.92 and 0.96). The mJSW measured on radiographs was correlated to mean cartilage thickness calculated by qMRI (r = 0.71, p < 0.0001 for the medial PFJ and r = 0.81, p < 0.0001 for the lateral PFJ). However, there was a lack of concordance between radiographs and qMRI for extreme values of joint width and KLG. Radiographs yielded higher joint space measures than qMRI in knees with a normal joint space, while qMRI yielded higher joint space measures than radiographs in knees with joint space narrowing and higher KLG. CONCLUSIONS: Standing "skyline" radiographs are a reproducible tool for measuring the mJSW of the patellofemoral joint. The mJSW of the patellofemoral joint on radiographs are correlated with, but not concordant with, qMRI measurements.
Disciplines :
Radiology, nuclear medicine & imaging
Author, co-author :
SIMONI, Paolo ;  Centre Hospitalier Universitaire de Liège - CHU > Service médical de radiodiagnostic
Jamali, Sanaa
Albert, Adelin  ;  Université de Liège - ULiège > Département des sciences de la santé publique > Département des sciences de la santé publique
Totterman, Saara
Schreyer, Edward
Tamez-Pena, Jose G
Zobel, Bruno B
Miezentseva, Victoria A.
Gillet, Philippe ;  Université de Liège - ULiège > Département des sciences cliniques > Chirurgie de l'appareil locomoteur
Language :
English
Title :
Minimum joint space width (mJSW) of patellofemoral joint on standing "skyline" radiographs: test-retest reproducibility and comparison with quantitative magnetic resonance imaging (qMRI)
Publication date :
24 August 2013
Journal title :
Skeletal Radiology
ISSN :
0364-2348
eISSN :
1432-2161
Publisher :
Springer Verlag, Berlin, Germany
Volume :
42
Issue :
11
Pages :
1573-82
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
2013/08/27
Available on ORBi :
since 16 January 2015

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