• J Shoulder Elbow Surg · Dec 2015

    Superobesity (body mass index >50 kg/m(2)) and complications after total shoulder arthroplasty: an incremental effect of increasing body mass index.

    • Brian C Werner, M Tyrrell Burrus, James A Browne, and Stephen F Brockmeier.
    • Department of Orthopaedic Surgery, University of Virginia Health System, Charlottesville, VA, USA.
    • J Shoulder Elbow Surg. 2015 Dec 1; 24 (12): 1868-75.

    BackgroundThe prevalence of obesity in the United States continues to increase. Attention has recently turned to an emerging population of extremely overweight patients, termed superobese and defined as those with body mass index (BMI) ≥50 kg/m(2). The goal of this study was to use a national database to evaluate postoperative complication rates after total shoulder arthroplasty (TSA) in superobese patients and to compare patients of different BMI classes.MethodsPatients who underwent TSA or reverse TSA were identified in the PearlDiver database by International Classification of Diseases, Ninth Revision (ICD-9) codes. These patients were then divided into nonobese, obese, morbidly obese, and superobese cohorts by ICD-9 codes. Postoperative complications were assessed and compared between cohorts.ResultsFrom 2005 to 2012, 144,239 unique patients who underwent TSA or reverse TSA were identified, including 105,661 nonobese patients, 23,864 obese patients, 13,759 morbidly obese patients, and 955 superobese patients. Superobese patients had a significantly higher rate of infection, dislocation, component loosening, revision shoulder arthroplasty, venous thromboembolism, and medical complications after shoulder arthroplasty compared with nonobese controls.ConclusionsObesity is associated with significantly increased rates of numerous complications after TSA, including infection, dislocation, component loosening, revision surgery, venous thromboembolism, and medical complications, compared with nonobese controls. Superobesity (BMI > 50 kg/m(2)) is associated with significantly increased rates of several complications compared with even obese and morbidly obese patients, including infection, component loosening, venous thromboembolism, and medical complications.Copyright © 2015 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.

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