Fig. 1From: Single shot adductor canal block combined with intravenous patient-controlled analgesia can be effective as continuous adductor canal block in reducing opioid consumption and breakthrough pain after total knee arthroplastyFlow chart of included patients. Postoperative pain control methods were divided into three groups: IV-PCA (n = 180), C-ACB (n = 173) and PCA + sACB (n = 129)Back to article page