J Knee Surg 2023; 36(08): 827-836
DOI: 10.1055/s-0042-1743235
Original Article

Liposomal Bupivacaine and Ropivacaine Adductor Canal Blocks for Anterior Cruciate Ligament Reconstruction Provide Similar Postoperative Analgesia

1   Department of Orthopaedic Surgery, Division of Sports Medicine, Emory University, Atlanta, Georgia
,
Jennifer L. Hunnicutt
1   Department of Orthopaedic Surgery, Division of Sports Medicine, Emory University, Atlanta, Georgia
,
Rebecca M. Haley
1   Department of Orthopaedic Surgery, Division of Sports Medicine, Emory University, Atlanta, Georgia
,
Ehab Nazzal
2   Department of Orthopaedic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
,
Yunyun Chen
3   Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia
,
Ajay Premkumar
4   Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
,
Joseph D. Lamplot
1   Department of Orthopaedic Surgery, Division of Sports Medicine, Emory University, Atlanta, Georgia
,
Heather A. Samady
1   Department of Orthopaedic Surgery, Division of Sports Medicine, Emory University, Atlanta, Georgia
,
Michael B. Gottschalk
1   Department of Orthopaedic Surgery, Division of Sports Medicine, Emory University, Atlanta, Georgia
,
John W. Xerogeanes
1   Department of Orthopaedic Surgery, Division of Sports Medicine, Emory University, Atlanta, Georgia
› Author Affiliations
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Abstract

The purpose of this study was to compare postoperative pain following anterior cruciate ligament (ACL) reconstruction (ACLR) in patients receiving an adductor canal block (ACB) with ropivacaine (R-ACB) or liposomal bupivacaine (LB-ACB). The secondary purpose was to compare opioid consumption. A prospective cohort study of patients undergoing ACLR at an academic medical center was conducted from November 1, 2018 to November 21, 2019. The first cohort received R-ACB and 30 tablets of 5/325 mg oxycodone/acetaminophen. After June 13, 2019, the second cohort received LB-ACB and 20 tablets of 5/325 mg oxycodone/acetaminophen with the reduction in opioids prescribed resulting from a hospital quality improvement initiative to decrease narcotic consumption. From postoperative days 0 through 6, pain was assessed thrice daily using a numeric rating scale. Total postoperative opioid consumption was reported via tablet count and converted to oral morphine equivalents (OMEs). During this period, 165 subjects underwent ACLR, and 126 met the eligibility criteria (44.4% female, 55.6% male; mean ± standard deviation: 28.7 ± 13.7 years). Sixty-six (52.4%) received LB-ACB, and 60 (47.6%) received R-ACB (p = 0.53). The most common graft utilized was quadriceps autograft (63.6% LB-ACB; 58.3% R-ACB, p = 0.76). Mean postoperative pain scores were similar between groups during the entire postoperative period (p ≥ 0.08 for POD 0–6). While postoperative opioid consumption was lower among patients receiving LB-ACB (median OME [interquartile range]: 28.6 [7.5–63.8] vs. 45.0 [15.0–75.0], p = 0.023), this only amounted to an average of 2.2 tablets. Patients receiving LB-ACB in the setting of ACLR reported similar postoperative pain compared with those receiving R-ACB. Despite the second aim of our study, we cannot make conclusions about the effect of each block on opioid consumption given that each cohort received different numbers of opioid tablets due to institutional pressure to reduce opioid prescribing. As few patients completed their opioid prescriptions or requested refills, further reduction in prescription size is warranted. Future studies are necessary to further elucidate the effect of LB-ACB versus R-ACB on postoperative pain and opioid consumption after ACLR.

Authors' Contributions

E.L.D.


• Substantial contributions to the conception and design of the work along with acquisition and interpretation of data.


• Drafting the work.


• Final approval of the version to be published.


• Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.


J.L.H.


• Substantial contributions to the conception of the work.


• Revising the work critically for important intellectual content.


• Final approval of the version to be published.


• Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.


R.M.H.


• Acquisition of the data.


• Drafting of the work.


• Final approval of the version to be published.


• Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.


E.N.


• Substantial contributions to the conception and design of the work


• Revising the work critically for important intellectual content


• Final approval of the version to be published


• Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.


Y.C.


• Analysis and interpretation of the data.


• Revising the work critically for important intellectual content.


• Final approval of the version to be published.


• Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.


A.P.


• Substantial contributions to the conception of the work.


• Revising the work critically for important intellectual content.


• Final approval of the version to be published.


• Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.


J.D.L.


• Interpretation of the data for the work.


• Drafting the work.


• Final approval of the version to be published.


• Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.


H.A.S.


• Substantial contributions to the conception and design of the work.


• Revising the work critically for important intellectual content.


• Final approval of the version to be published.


• Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.


M.B.G.


• Substantial contributions to the conception and design of the work and interpretation of the data.


• Revising the work critically for important intellectual content.


• Final approval of the version to be published.


• Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.


J.W.X.


• Substantial contributions to the conception and design of the work and interpretation of the data.


• Revising the work critically for important intellectual content.


• Final approval of the version to be published.


• Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.




Publication History

Received: 12 April 2021

Accepted: 09 January 2022

Article published online:
10 March 2022

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