Validation of the S.T.O.N.E. Score for Predicting Stone-Free Rate in Patients with Ureteral Stones Undergoing Semirigid Pneumatic Ureteral Lithotripsy

We conducted a retrospective study of 266 patients with ureteral stones who underwent ULT at IBB University Hospitals in Yemen, between April 2021 and September 2023. The S.T.O.N.E. score was calculated based on factors obtained from preoperative non-contrast computed tomography scans. A nomogram was created to predict the likelihood of SFR failure post-ULT.