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Utilization of total knee and hip arthroplasty has greatly increased in the past decade in the United States; these are among the most expensive procedures in patients with Medicare. Advances in surgical techniques, anesthesia, and care pathways decrease hospital length of stay. We examined how trends in hospital cost were altered by decreases in length of stay.

Effects of the Length of Stay on the Cost of Total Knee and Total Hip Arthroplasty from 2002 to 2013