The National Hip Fracture Database is only as good as the data we feed it - significant inaccuracy demonstrated and how to improve it.

Introduction: The National Hip Fracture Database of England, Wales and Northern Ireland (NHFD) is the largest such database in the world. Data errors in within the NHFD lead to spurious evidence which ultimately informs Orthopaedic, Anaesthetic and Orthogeriatric clinical practice.

Materials And Methods: This multi-centre quality improvement study investigated, and sought to improve data inaccuracy within the NHFD. Hip arthroplasty episodes recorded between 2011-2020 were analysed for errors in operation, implant polarity and cementation.

Results: Inaccuracies were observed in 20.5% of 3972 data entries. Following the introduction of a hip fracture clinical data administrator in each centre, inaccuracies reduced four-fold (5.2% of 559 data entries).

Conclusion: We advise caution when utilising NHFD data for research and audit purposes. In order to build a robust, accurate database for future research, we recommend the incorporation of specialist data administrators into the hip fracture multidisciplinary team.