Transfer of hip arthroplasty patients leads to increased cost and resource utilization in the receiving hospital.

Factors other than complexity of care often drive the transfer of orthopedic patients to tertiary centers. We sought to compare the demographics, diagnoses, insurance data, peri-operative outcomes and institutional costs of total hip arthroplasty patients transferred from outside facilities with those of patients derived from our clinics. We analyzed 419 consecutive patients as part of a prospective risk study. Transferred patients were older (P=0.01), less likely to have private insurance (P<0.0001), and more likely to be admitted on weekends (P=0.04). Both dislocation and fracture were more prevalent in transferred patients (P=0.04; P=0.003). Across all key metrics - including length of stay, mortality scoring, peri-operative complications, and direct and total costs - transferred patients more significantly strained the resources of our arthroplasty center.