Abstract
Many risk factors associated with deep infections after primary shoulder arthroplasty remain controversial and have not yet been summarized. As such, the aim of the present study was to quantitatively summarize the risk factors associated with deep infections after primary shoulder arthroplasty. Computerized and additional manual searches on the Medline, Embase, Chinese National Knowledge Infrastructure (CNKI), and Cochrane central database for potential studies, published from inception to March 2022, were performed. All studies that assessed risk factors for deep infection after primary shoulder arthroplasty were selected without language restrictions. Eligible studies were required to fulfill quality assessment criteria from the Consort statement and to evaluate risk factors for deep infection after primary shoulder arthroplasty. Two reviewers independently extracted the relevant data, with disagreements resolved by consensus. Statistical analyses were performed using Stata version 11.0 (Statacorp LLC, College Station, TX, USA). Seven studies including 493,148 patients who underwent primary shoulder arthroplasty, among whom 1,314 experienced infection (0.3%), were eligible and included in this meta-analysis. Meta-analysis revealed that significantly increased risk factors for infection after primary shoulder arthroplasty included male sex (odds ratio [OR] 1.79 [95% confidence interval (CI) 1.23-2.60]), avascular necrosis (OR 2.64 [95% CI 1.61-4.34]), rotator cuff arthropathy (OR 2.14 [95% CI 1.55-2.95]), proximal humerus fracture (OR 2.68 [95% CI 1.93-3.73]), and non-union of humerus fracture (OR 5.32 [95% CI 3.52-8.02]). In contrast, advanced age was associated with a decreased likelihood for development of infection (OR 0.97 [95% CI 0.94-1]). Surgeons should devote close attention to the above-mentioned medical conditions to reduce deep infection after primary shoulder arthroplasty.
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