Risk Factors of Opioid use Associated with an Enhanced-Recovery Programme after Total Knee Arthroplasty

Abstract Background: The relationship between total knee arthroplasty (TKA) and postoperative opioid use is poorly studied. The aim of the study is to examine the prevalence and risk factors for opioid use with an enhanced-recovery programme after primary TKA.Methods: We identified 361 patients undergoing TKA, and separated those on the basis of whether to receive opioid use after surgery. Multivariate logistic regression model was used to identify independent risk factors for opioid use after primary TKA. Length of stay (LOS) and postoperative complications were recorded and compared.Results: The prevalence of opioid use after primary TKA was 23.0%. Significant risk factor were more operative time (OR [odds ratio] = 1.017, 95% CI [confidence interval] = 1.001 to 1.032, p = 0.034) and protective factor was tranexamic acid use (OR= 0.355, 95% CI = 0.161 to 0.780, p = 0.010). In addition, the LOS was longer in opioid group (p < 0.05).Conclusion: Considering the adverse health effects of opioid use, strategies need to be developed to prevent persistent opioid use. Reducing operative time and application of tranexamic acid could lower the risk of opioid use with an enhanced-recovery programme after primary TKA.