Abstract
Post-joint arthroplasty infections, especially surgical site infections (SSI) and periprosthetic joint infections (PJI), significantly impact patient outcomes. The potential influence of malnutrition on these postoperative complications remains a crucial concern for clinicians. Adhering to PRISMA guidelines, we performed a systematic review and meta-analysis using four databases up to 19 July 2023. We sought studies on joint replacements, focusing on malnutrition as an SSI risk factor. The malnutrition criteria were defined by specific laboratory parameters. Two independent reviewers undertook data extraction and quality assessment, with discrepancies resolved through consensus or third-party review. Studies were evaluated for methodological quality using the Newcastle-Ottawa Scale (NOS). For statistical analyses, heterogeneity was assessed using the I2 statistic, and both fixed and random-effects models were employed based on heterogeneity levels, utilizing Stata software (version 17). Significant heterogeneity was present among studies examining the relationship between malnutrition and SSI (I2 = 59.5%, p = 0.03%). Employing the random-effects model, results indicated that malnourished individuals were approximately 2.63 times more likely to develop SSI post-operation. Further exploration into the association between malnutrition and PJI, from seven pertinent studies, also revealed an elevated risk (OR = 2.59, 95% CI: 1.79-3.39). Sensitivity analyses confirmed the robustness of these findings, and publication bias assessments supported the validity of the included studies. Malnutrition robustly correlates with an increased risk of both SSI and PJI following total joint arthroplasty. Emphasizing preoperative nutritional assessments and intervention strategies may offer a promising avenue to enhance patient outcomes and reduce postoperative complications.
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