Narrowing of ischiofemoral and quadratus femoris spaces in pediatric ischiofemoral impingement

Objective To correlate MRI findings of quadratus femoris muscle edema (QFME) with narrowing of the ischiofemoral space (IFS) and quadratus femoris space (QFS) in children, and to identify threshold values reflecting an anatomic architecture that may predispose to ischiofemoral impingement. Materials...

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Bibliographic Details
Published in:Skeletal radiology 2018-11, Vol.47 (11), p.1505-1510
Main Authors: Goldberg-Stein, Shlomit, Friedman, Avi, Gao, Qi, Choi, Jaeun, Schulz, Jacob, Fornari, Eric, Taragin, Benjamin
Format: Article
Language:English
Subjects:
Adolescent
Age
Age Factors
Case-Control Studies
Child
Children
Comparative analysis
Control methods
Correlation analysis
Edema
Edema - diagnostic imaging
Female
Femur - diagnostic imaging
Hip
Hip Joint - diagnostic imaging
Humans
Imaging
Impingement
Ischium - diagnostic imaging
Joint Diseases - diagnostic imaging
Magnetic Resonance Imaging
Male
Medicine
Medicine & Public Health
Muscle, Skeletal
Muscles
Muscular Diseases - diagnostic imaging
Nuclear Medicine
Observer Variation
Orthopedics
Pathology
Pediatrics
Radiology
Retrospective Studies
Scientific Article
Teenagers
Young adults
Youth
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Summary:Objective To correlate MRI findings of quadratus femoris muscle edema (QFME) with narrowing of the ischiofemoral space (IFS) and quadratus femoris space (QFS) in children, and to identify threshold values reflecting an anatomic architecture that may predispose to ischiofemoral impingement. Materials and methods A case-control retrospective MRI review of 49 hips in 27 children (mean, 13 years) with QFME was compared to 49 hips in 27 gender and age-matched controls. Two radiologists independently measured IFS and QFS. Generalized linear mixed-effects models were fit to compare IFS and QFS values between cases and controls, and adjust for correlation in repeated measures from the same subject. Receiver operating characteristic (ROC) analysis determined optimal threshold values. Results Compared to controls, cases had significantly smaller IFS ( p  
ISSN:0364-2348
1432-2161
DOI:10.1007/s00256-018-2962-0