• Mariano E Menendez, Sarah M Lawler, David Ring, and Andrew Jawa.
• Department of Orthopaedic Surgery, New England Baptist Hospital, Tufts University School of Medicine, Boston, MA, USA.
• J Shoulder Elbow Surg. 2018 Dec 1; 27 (12): 2113-2119.

BackgroundAs reimbursement becomes increasingly tied to quality and patient experience, there is growing interest in alleviation of postoperative pain combined with optimal opioid stewardship. We characterized predictors of severe inpatient pain after elective total shoulder arthroplasty and evaluated its association with opioid use, operative time, hospital length of stay, discharge disposition, and cost.MethodsWe identified 415 patients undergoing elective primary total shoulder arthroplasty between 2016 and 2017 from our registry. Severe postoperative pain was defined as peak pain intensity ≥75th percentile. Multivariable logistic regression modeling was used to determine preoperative characteristics associated with severe pain, including demographics, emotional health, comorbidities, and American Shoulder and Elbow Surgeons score. Opioid consumption was expressed as oral morphine equivalents (OMEs). Costs were calculated using time-driven activity-based costing.ResultsIn decreasing order of magnitude, the predictors of severe postoperative pain were greater number of self-reported allergies, preoperative chronic opioid use, lower American Shoulder and Elbow Surgeons score, and depression. Patients reporting severe pain took more opioids (202 vs. 84 mg OMEs), stayed longer in the hospital (2.9 vs. 2.0 days), used postacute inpatient rehabilitation services more frequently (28% vs. 10%), and were more likely to be high-cost patients (23% vs. 5%; all P < .001), but they did not have longer operations (166 vs. 165 minutes, P = .86).ConclusionsEfforts to address psychological and social determinants of health might do as much or more than technical improvements to alleviate pain, limit opioid use, and contain costs after shoulder arthroplasty. These findings are important in the redesign of care pathways and bundling initiatives.Copyright © 2018 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.

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