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BackgroundThe rate of fatal pulmonary embolism (PE) following hip and knee arthroplasty has remained unchanged despite the use of low‐molecular‐weight heparin (LMWH) and oral antithrombotic agents. Concerns regarding bleeding and wound complications resulted in the introduction of a staged chemoprophylaxis protocol at our institution in 2002. We hypothesized that staged chemoprophylaxis using LMWH...