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Nonsurgical complications after total hip and knee arthroplasty.

Postoperative medical complications after total hip arthroplasty (THA) and total knee arthroplasty (TKA) may occur in patients of any age. However, percentage of adverse events increases with increasing patient age and can cause significant morbidity and even mortality. It is important that the orthopedist identify risk factors and symptoms and be knowledgeable in the treatment of nonsurgical postoperative complications. Nonsurgical complications after THA and TKA include pulmonary embolism, fat embolism syndrome, pneumonia, myocardial infarction, postoperative delirium, cerebrovascular accident, urinary retention, urinary tract infections, and deep vein thrombosis.