Perioperative hidden blood loss in unilateral total knee arthroplasty: problems and characteristics / 中国组织工程研究

ABSTRACT

BACKGROUND: The hidden blood loss is the main reason for anemia after knee arthroplasty, which will delay wound healing, increase infection, prolong rehabilitation time, improve the cost of medicine, and seriously affect clinical outcome. OBJECTIVE: To summarize the new conceptions and methods about decreasing perioperative hidden blood loss of knee arthroplasty, and to provide help for the prevention of hidden blood loss in total knee arthroplasty. METHODS: We retrieved CNKI and PubMed for articles concerning perioperative hidden blood loss following total knee arthroplasty published from January 2005 to February 2017. We choose different controlled clinical trials about the method of preventing hidden blood loss. Key words were "knee arthroplasty, hidden blood loss, artificial joint". RESULTS AND CONCLUSION: (1) Hidden blood loss during total knee arthroplasty was associated with many factors. (2) The following factors might reduce hidden blood loss: using the tranexamic acid, reducing the duration of tourniquet, raising the operated knee in a certain extent after operation, and gauging imaging data of the affected knee exactly before operation. (3) Free fatty acids were also responsible for the hidden blood loss. (4) Computer assisted surgery could not reduce the quantity of hidden blood loss, but help patient recovery. (5) The scholars have not reach an agreement about hidden blood loss in total knee arthroplasty, so the research will go continue.