This is the first report from the Irish National Orthopaedic Register (INOR). This is a significant milestone for the Register, as the report presents data and information on elective hip and knee replacement surgery in INOR. It is also a platform to commence building of more complex reporting of national and local data from the Register. This report includes data that were gathered from the commencement of the Register on 1 December 2014 until 31 July 2019.