Despite higher pain scores at 8 hours postoperatively and increased opioid use, local infiltration analgesia was less costly and yielded similar pain scores at 24 hours after shoulder arthroplasty compared with an interscalene block.
In a level-1, prospective randomized trial, Michael Ewing, MD, and colleagues from the University of Missouri compared outcomes between 37 patients who underwent primary shoulder arthroplasty with a local infiltration analgesia (LIA) injection, which included ropivacaine, epinephrine and ketorolac, and 37 patients who received an interscalene block with liposomal