Correlation of Knee Joint Function and Hidden Blood Loss after Total Knee Arthroplasty

Abstract：Objective To investigate the correlation and influence factors of knee joint function for hidden blood loss after total knee arthroplasty.Methods A retrospective study of 84cases who under went total knee arthroplasty was performed to calculate the hidden blood loss and evaluate the knee joint function score after 3 month,6 month,1 years of follow-up. The effect of patient gender,age,body mass index,ntraoperative blood transfusion,the use of prosthesis type,and postoperative anti-coagulationon the post operative hidden blood loss were analyzed.Results The functional scores of KSS in the patient swith low hidden blood loss were higher than those with high hidden blood loss at 3 month,6 month,1 years of follow-up. The differ-ence was statistically significant(P<0. 05). Unvaried and multivariate linear regression ananlysis showed that postoperative hidden blood loss were associated with the patient gender,age and prosthesis type(P<0.05).Conclusion Hidden blood loss can affect the recovery of knee joint function after total knee arthroplasty,and the gender,age,prosthesis type are its inde-pendent risk factors,early prevention in perioperative period is conducive to the recovery of knee joint function after surgery.