Analysis of the Effect of the Application of Pressure Tourniquets Throughout and Halfway of Total Knee Arthroplasty

LÜ Xiaoyan; HU Jianbin

doi:10.14033/j.cnki.cfmr.2025.19.001

Abstract：Objective:To investigate the effect of using pressure tourniquets throughout and halfway of total knee arthroplasty.Method:120 patients with knee osteoarthritis(KOA)in the hospital from March 2022 to March 2024 were selected and randomly divided into two groups using a random number table:Group A and Group B,with 60 patients in each group.In total knee replacement surgery,Group A was given a full tourniquet,while Group B was given a half tourniquet.The intraoperative blood loss,surgical time,postoperative pain[Visual Analog Scale(VAS)],degree of swelling,quadriceps muscle strength[Manual Muscle Strength Test(MMT)score],and knee joint function[Hospital for Special Surgery Knee Score(HSS)]between two groups were compared.Result:The intraoperative blood output of patients in group B was higher than that in group A,and the operation time in group B was longer than that in group A(P<0.05).1 d and 3 d after operation,VAS scores in group B were lower than those in group A(P<0.05).1 d and 3 d after operation,the degree of limb swelling in group B was lower than that in group A(P<0.05).7 d and 14 d after operation,the MMT scores of patients in group B were higher than those in the control group(P<0.05).7 d and 14 d after operation,the HSS score in group B was higher than that in group A(P<0.05).Conclusion:The use of a half tourniquet in total knee arthroplasty can alleviate early postoperative pain and limb swelling in patients,promote the recovery of quadriceps muscle strength,and improve knee joint function.However,using a half tourniquet during surgery can prolong the patient's surgery time and increase intraoperative bleeding.