“…Notably, the HEALTH (Hip Fracture Evaluation with Alternatives of Total Hip Arthroplasty Versus Hemiarthroplasty) trial required participating surgeons to have performed both 50 arthroplasties (HA or THA) in their career and ≥5 procedures in the past year 38 . A prior analysis of 29,530 hip fractures in Australia reported that a consultant orthopaedic surgeon was more likely to be present if a patient was receiving a THA, privately insured, receiving surgery after regular hospital hours, or in a low-volume hospital (i.e., ≤150 femoral neck fracture surgeries per year) 39 . These thresholds introduce a performance bias in favor of lower revision rates for THA compared with HA, which is more likely to be performed by a resident.…”