The 15th international workshop on osteoarthritis imaging; “Open Up: The multifaceted nature of OA imaging”

From June 30 to July 2, 2021, the 15th International Workshop on Osteoarthritis Imaging (IWOAI) was held as hybrid meeting with attendees joining both in-person in Rotterdam, The Netherlands and on-line. The theme of this meeting, “Open Up: The Multifaceted Nature of OA Imaging”, reflected the wide range of topics related to imaging or osteoarthritis (OA) that was featured during the workshop, as well as the diverse background of the attendees. This article presents a summary of the topics, new insights and research priorities that were presented and discussed during the plenary sessions at the IWOAI 2021.