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  • Title: Super Obesity Is an Independent Risk Factor for Complications After Primary Total Hip Arthroplasty.
    Author: Werner BC, Higgins MD, Pehlivan HC, Carothers JT, Browne JA.
    Journal: J Arthroplasty; 2017 Feb; 32(2):402-406. PubMed ID: 27612609.
    Abstract:
    BACKGROUND: Recent studies have reported higher postoperative complication rates in obese and morbidly obese patients undergoing total hip arthroplasty (THA). Less data are available regarding super-obese (body mass index [BMI] >50 kg/m2) patients. This study aims to quantify the risk of complications after THA in super-obese patients on a national scale and to put these risks in context by comparing them to patients of other BMI classes as well as those undergoing revision THA. METHODS: Utilizing a national insurance database, complication rates after THA in super-obese patients (n = 3244) were compared to nonobese, obese, and morbidly obese patients undergoing primary THA and all patients undergoing revision THA. A logistic regression analysis controlling for demographic and comorbidity variables was utilized to determine the independent effect of super obesity on complication rates after THA. RESULTS: Super-obese patients had significantly higher rates of most complications than nonobese, obese, morbidly obese, and revision THA patients, including venous thromboembolism, infection, blood transfusion, medical complications, dislocation, readmission, and revision THA. CONCLUSION: Super-obese patients (BMI >50 kg/m2) have higher rates of postoperative complications after THA than nonobese, obese, morbidly obese, and revision THA patients. Super obesity is an independent risk factor for increased rates of most postoperative complications including the need for early revision THA.
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