Oblique supine position versus prone position for percutaneous nephrolithotomy: a systematic review and meta-analysis

Abstract

Introduction: To compare the efficacy and safety of percutaneous nephrolithotomy (PCNL) in the oblique supine position (OSP) and the prone position (PP).Aim: To perform a systematic review and meta-analysis to evaluate the efficacy and safety of OSP versus PP for PCNL. Material and methods: A systematic literature search of PubMed, Ovid, SCOPUS, and citation lists was conducted to identify eligible comparative studies up to November 2022. All studies comparing OSP versus PP for PCNL were included. Statistical analysis was performed with the Collaboration's Review Manager (RevMan) 5.4 software. Results: Overall, eight studies were included involving 1185 patients (OSP = 634; PP = 551). There were no statistically significant differences between OSP and PP in age (WMD = -0.95 years; 95% CI: -2.12 to 0.21; p = 0.83) or proportion of male patients (OR = 0.02; 95% CI: -0.03 to 0.08; p = 0.43). We found that OSP was performed more frequently for smaller stone size and patients with higher BMI (WMD = -0.1 cm, 95%