The DISTINCT Trial will be comparing dual mobility total hip arthroplasty (THA) with conventional THA for the treatment of femoral neck fractures in a real-world, usual care setting. Using a cluster randomised crossover design, each intervention will be implemented as standard practice across participating sites, enhancing generalisability. The trial is nested within the Australian Orthopaedic Association National Joint Replacement Registry (AOANJRR), leveraging its comprehensive, routinely collected national data on all arthroplasty procedures in Australia.