Objective To investigate the effect of enhanced recovery after surgery(ERAS) concept on the clinical efficacy of minimally invasive unicompartmental knee arthroplasty(UKA) in the treatment of anteromedial knee osteoarthritis.Methods A total of 50 patients with single anteromedial knee osteoarthritis who underwent UKA in our department from June 2020 to June 2021 were randomly divided into two groups:The observation group (ERAS group) and the control group.In the observation group,there were 7 males and 18 females.The patients aged from 49 to 77 years old,with an average age of (65.32±6.77)years.In the control group,there were 9 males and 16 females.The patients aged from 51 to 80 years old,with an average age of (65.56±7.63)years.The operation time,intraoperative blood loss,first walking time,length of hospital stay,and decrease value of hemoglobin value 24 hours after operation were recorded.VAS of knee joint were recorded 1 day,2 and 3 days after operation.Outpatient followup was conducted at 1,3 and 12 months after operation,X-ray was rechecked,complications were recorded,and ROM,VAS and HSS of knee joint were evaluated.Results All patients were followed up until 12 months after surgery.There was no significant difference in operation time between the two groups (P>0.05).The amount of intraoperative bleeding in the observation group was higher than that in the control group and the difference was statistically significant (P<0.001).The first walking time,length of hospital stay,and the decrease value of hemoglobin 24 hours after operation in the observation group were lower than those in the control group and the difference was statistically significant (P<0.001).There was no significant difference in VAS,HSS and ROM of knee joint between the two groups before operation (P>0.05).The VAS in the observation group was lower than that in the control group at 1 day,2 days,3 days and 1 month after operation,and the difference was statistically significant (P<0.05).One month after operation,HSS and ROM of knee joint in the observation group were higher than those in the control group and the difference was statistically significant (P<0.05).There was no significant difference in VAS,HSS and ROM of knee joint between the two groups at 3 and 12 months after operation (P>0.05).The difference in VAS,HSS and ROM of knee joint within the two groups at different time points were statistically significant (P<0.001).Up to the last outpatient follow-up,no complications occurred in the observation group and the control group.Conclusion The results of the study prove that minimally invasive unicompartmental knee arthroplasty with ERAS can reduce early postoperative pain and perioperative blood loss,promote early out of bed activities and reduce hospital stay,improve early knee functional exercise,and enhance patient satisfaction.ERAS is an effective measure to optimize the perioperative management of UKA.
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