Impact of Surgical Position on Stone-Free Rates in Retrograde Intrarenal Surgery

"The T-Tilt position is a modified lithotomy position used during retrograde intrarenal surgery (RIRS). In this position:~The patient is placed in a 30-degree Trendelenburg position, meaning the head is slightly lower than the feet.~The surgical side is elevated at a 30-degree angle to improve access to the kidney.~This modified positioning is designed to enhance stone clearance, particularly by facilitating the movement of stone fragments away from the lower kidney calyces, where residual stones often remain. Researchers will compare this position to the standard lithotomy position to determine its impact on stone-free rates and surgical outcomes."