Cost analysis of staged versus simultaneous bilateral total knee and hip arthroplasty using a propensity score matching.

Background: Total joint arthroplasty (TJA), including total knee arthroplasty (TKA) and total hip arthroplasty (THA), is required for many patients. This study aimed to evaluate the medical costs, length of stay (LOS), blood transfusion and in-hospital complications in patients undergoing simultaneous and staged TJA.

Methods: All patients who underwent primary bilateral TJA from 2013 to 2018 in our institute were included.