A study published in the April 5 JBJS compares the use of interscalene block and injectable liposomal bupivacaine in shoulder arthroplasty procedures. The authors conducted a randomized, controlled trial of 78 patients who received interscalene brachial plexus blockade treatment and 78 patients who received bupivacaine liposome injectable suspension treatment. 

During the first 24 hours after surgery, they found that the mean total postoperative opioid consumption was 14.8 ±11.3 morphine equivalent units in the blockade group and 14.4 ±16.8 morphine equivalent units in the suspension group. In addition, they found that mean visual analog scale (VAS) pain score was significantly lower in the blockade group than in the suspension group at 0 hours and 8 hours postoperative, but not at 16 hours postoperatively. At 24 hours, VAS pain scores were significantly higher in the blockade group than in the suspension group. Learn more...

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