• Oluwadamilola Kolade, Karan Patel, Rivka Ihejirika, Daniel Press, Scott Friedlander, Timothy Roberts, Andrew S Rokito, and Mandeep S Virk.
• Shoulder & Elbow Division, Department of Orthopaedic Surgery, NYU Langone Orthopedic Hospital, New York, NY, USA.
• J Shoulder Elbow Surg. 2019 Sep 1; 28 (9): 1824-1834.

HypothesisThe aim of this meta-analysis was to compare the safety, efficacy, and opioid-sparing effect of liposomal bupivacaine (LB) vs. nonliposomal local anesthetic agents (NLAs) for postoperative analgesia after shoulder surgery.MethodsA systematic literature review of randomized controlled clinical studies comparing the efficacy of LB with NLAs in shoulder surgery was conducted. Seven level I and II studies were included in the meta-analysis, and shoulder surgical procedures included arthroscopic rotator cuff repair and shoulder arthroplasty. Bias was assessed using The Cochrane Collaboration's tool. The primary outcome measures were visual analog scale pain scores and opioid consumption 24 and 48 hours after shoulder surgery. Subgroup analysis was performed for the method of LB administration (interscalene nerve block vs. local infiltration).ResultsA total of 7 studies (535 patients) were included in the final meta-analysis comparing LB (n = 260) with NLAs (n = 275). No significant difference was found between the LB and NLA groups in terms of visual analog scale pain scores at 24 hours (95% confidence interval, -1.02 to 0.84; P = .86) and 48 hours (95% confidence interval, -0.53 to 0.71; P = .78). Both groups had comparable opioid consumption at both 24 hours (P = .43) and 48 hours (P = .78) postoperatively and with respect to length of stay (P = .87) and adverse events (P = .97). Subgroup analysis demonstrated comparable efficacy irrespective of the method of administration of LB.ConclusionLB is comparable to NLAs with respect to pain relief, the opioid-sparing effect, and adverse effects in the first 48 hours after arthroscopic rotator cuff repair and total shoulder arthroplasty.Copyright © 2019 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.

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