Prone versus prone-flexed position in percutaneous nephrolithotomy: A randomized controlled trial.

Background: The aim of this study intends to assess prone and flexed prone positions for percutaneous nephrolithotomy (PNL) for safety and efficacy.

Methods: From May 2017 to August 2022, a stratified randomized approach was carried out to randomly assign 346 PNL candidates into prone or flexed prone groups. Perioperative data, such as stone-free rate, stay length, operative time, and complication rates, were studied.