TY - JOUR
T1 - Magnetic resonance imaging findings of ischiofemoral impingement in patients with inflammatory myositis
T2 - An observational study
AU - Kwee, Robert M.
AU - Ahlawat, Shivani
AU - Fritz, Jan
N1 - Publisher Copyright:
Copyright © 2016 Wolters Kluwer Health, Inc. All rights reserved.
PY - 2017/3/1
Y1 - 2017/3/1
N2 - Objective To determine the frequency of magnetic resonance imaging (MRI) findings of ischiofemoral impingement (IFI) in patients with inflammatory myositis (IM) and associated factors. Methods Pelvis and thigh MRI studies of 314 consecutive patients (57% women; mean age, 55.5 years; range, 18-85) with suspected muscle disease were reviewed. Results Ischiofemoral impingement at MRI was present in 11% of patients with a final diagnosis of IM and in 2% of patients with an alternative diagnosis (P = 0.008). In multiple logistic regression analysis, IM, but not age or sex, was independently associated with IFI at MRI (odds ratio, 5.18; 95% confidence interval, 1.19-22.6; P = 0.028). Fatty atrophy of hip stabilizing muscles was independently associated with IFI at MRI (odds ratio per unit increase of fatty atrophy score, 1.03; 95% confidence interval, 1.01-1.05; P = 0.0007). Conclusions Magnetic resonance imaging findings of IFI are present in 11% of IM patients and are independently associated with fatty atrophy of hip stabilizing muscles.
AB - Objective To determine the frequency of magnetic resonance imaging (MRI) findings of ischiofemoral impingement (IFI) in patients with inflammatory myositis (IM) and associated factors. Methods Pelvis and thigh MRI studies of 314 consecutive patients (57% women; mean age, 55.5 years; range, 18-85) with suspected muscle disease were reviewed. Results Ischiofemoral impingement at MRI was present in 11% of patients with a final diagnosis of IM and in 2% of patients with an alternative diagnosis (P = 0.008). In multiple logistic regression analysis, IM, but not age or sex, was independently associated with IFI at MRI (odds ratio, 5.18; 95% confidence interval, 1.19-22.6; P = 0.028). Fatty atrophy of hip stabilizing muscles was independently associated with IFI at MRI (odds ratio per unit increase of fatty atrophy score, 1.03; 95% confidence interval, 1.01-1.05; P = 0.0007). Conclusions Magnetic resonance imaging findings of IFI are present in 11% of IM patients and are independently associated with fatty atrophy of hip stabilizing muscles.
KW - fatty atrophy
KW - inflammatory myositis
KW - ischiofemoral impingement
KW - magnetic resonance imaging
KW - prevalence
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U2 - 10.1097/RCT.0000000000000501
DO - 10.1097/RCT.0000000000000501
M3 - Article
C2 - 27759597
AN - SCOPUS:84992125314
SN - 0363-8715
VL - 41
SP - 212
EP - 216
JO - Journal of computer assisted tomography
JF - Journal of computer assisted tomography
IS - 2
ER -