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[Blood transfusions: risks beyond communicable diseases].

Blood transfusions are daily practice in orthopaedic surgery and traumatology. Due to new surgical techniques and a better understanding of anaemia-associated pathophysiology, the indications for transfusion are becoming more and more strict. This is even more important as in the past few years increasing evidence shows that blood transfusions have a significant impact on hospital mortality and the patient's outcome. This article is intended to provide an overview of the literature in recent years dealing with this problem.