biostudies-literatureTanturri de Horatio LUiT The Arctic University of NorwayNational Institute for Health Research (NIHR)HelseNord426-437https://www.ebi.ac.uk/biostudies/studies/S-EPMC9968695biostudies-literatureUnknown53(3)<h4>Background</h4>Hip involvement predicts severe disease in juvenile idiopathic arthritis (JIA) and is accurately assessed by MRI. However, a child-specific hip MRI scoring system has not been validated.<h4>Objective</h4>To test the intra- and interobserver agreement of several MRI markers for active and chronic hip changes in children and young adults with JIA and to examine the precision of measurements commonly used for the assessment of growth abnormalities.<h4>Materials and methods</h4>Hip MRIs from 60 consecutive children, adolescents and young adults with JIA were scored independently by two sets of radiologists. One set scored the same MRIs twice. Features of active and chronic changes, growth abnormalities and secondary post-inflammatory changes were scored. We used kappa statisPediatric radiologyA novel magnetic resonance imaging scoring system for active and chronic changes in children and adolescents with juvenile idiopathic arthritis of the hip.PMC9968695NIHR 301322HNF1572-21NIHR301322Di Paolo PLMagni-Manzoni SMalattia CDamasio MBToma PAvenarius DRosendahl KTanturri de Horatio Ld'Angelo PShelmerdine SCfalseA novel magnetic resonance imaging scoring system for active and chronic changes in children and adolescents with juvenile idiopathic arthritis of the hip.<h4>Background</h4>Hip involvement predicts severe disease in juvenile idiopathic arthritis (JIA) and is accurately assessed by MRI. However, a child-specific hip MRI scoring system has not been validated.<h4>Objective</h4>To test the intra- and interobserver agreement of several MRI markers for active and chronic hip changes in children and young adults with JIA and to examine the precision of measurements commonly used for the assessment of growth abnormalities.<h4>Materials and methods</h4>Hip MRIs from 60 consecutive children, adolescents and young adults with JIA were scored independently by two sets of radiologists. One set scored the same MRIs twice. Features of active and chronic changes, growth abnormalities and secondary post-inflammatory changes were scored. We used kappa statis2023-01-01T00:00:00Z2023 Mar2025-05-29T19:45:07.669Z2025-04-04T21:47:51.609ZS-EPMC99686953614947710.1007/s00247-022-05502-8