RT Journal Article SR Electronic T1 Patterns of Magnetic Resonance Imaging Bone Erosion in Rheumatoid Arthritis — Which Bones Are Most Frequently Involved and Show the Most Change? JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 2014 OP 2017 DO 10.3899/jrheum.110416 VO 38 IS 9 A1 ØSTERGAARD, MIKKEL A1 MØLLER DØHN, UFFE A1 DUER-JENSEN, ANNE A1 HETLAND, MERETE LUND A1 HØRSLEV-PETERSEN, KIM A1 STENGAARD-PEDERSEN, KRISTIAN A1 JUNKER, PETER A1 PØDENPHANT, JAN A1 EJBJERG, BO YR 2011 UL http://www.jrheum.org/content/38/9/2014.abstract AB Objective. To investigate by magnetic resonance imaging (MRI) which bones in wrists and metacarpophalangeal (MCP) joints most frequently show bone erosions, and which most frequently demonstrate erosive progression, in early and established rheumatoid arthritis (RA). Methods. MRI datasets from 258 RA patients [126 with early RA (disease duration < 6 months)] were analyzed, of whom 223, including 126 with early RA, had 1-year followup MRI. All patients had MRI of one wrist, whereas 86 patients had additional images of 2nd–5th MCP joints, and 46 patients additional images of the contralateral wrist. MRI were evaluated blinded by one reader, according to the OMERACT RA MRI scoring system (RAMRIS) for erosions, and presence/absence of erosions was noted in each bone, as was presence/absence of erosive progression. Results. The capitate, ulna, lunate, triquetrum, and scaphoid were the 5 bones with both most frequent baseline erosions and most frequently demonstrated erosive progression. No bones were without erosions. Patterns of erosions and progression were similar in early and established RA. No major difference between dominant and nondominant wrists was detected. In the fingers, the 2nd–3rd MCP joint most frequently displayed erosions and erosive progression. Conclusion. The distribution and frequency of bone erosion and erosive progression as detected by MRI in RA wrists and MCP joints were identified. No pattern differences between early versus established disease and dominant versus nondominant sides were detected. No bones showed erosive progression. Thus, no self-evident simplification of the RAMRIS erosion score was identified. Bone involvement patterns may be considered, when joints are selected for MRI protocols for clinical trials and practice.