Task: Answer Verification
Input (English): Question: Is autologous blood donation in total knee arthroplasties necessary?
Answer: Total knee arthroplasty can be managed without preoperative AB-donation if it is performed using a tourniquet, if a postoperative collection and direct retransfusion system is used for the wound blood, and if the transfusion algorithm is defined according to compulsory and practical guidelines.
Output (English): no