Continuous Distal Adductor Canal Block With Periarticular Local Anesthetic Infiltration Versus Continuous Distal Adductor Canal Block Alone for Analgesia After Total Knee Arthroplasty

All catheters were inserted under a full aseptic technique using a real-time ultrasound-guided in-plane approach by an experienced anesthesiologist. The adductor canal catheter is inserted 2cm above the adductor hiatus.

All catheters were inserted under a full aseptic technique using a real-time ultrasound-guided in-plane approach by an experienced anesthesiologist. The adductor canal catheter is inserted 2cm above the adductor hiatus.The periarticular injection solution contained 20mL of 7.5 mg/mL ropivacaine, 30mg of ketorolac, and 0.3mL of 1.0 mg/mL epinephrine. These agents were mixed with normal saline to a combined volume of 50mL. The surgeon injected this mixture into the tensor fascia lata, subcutaneous tissues, abductors, short external rotators muscles, and structures in the capsule.