ArticleUrology annals
Reliability and validity of "S.T.O.N.E" nephrolithometry scoring system to predict the stone-free rate after percutaneous nephrolithotomy.
Article in Urology annals. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.
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Who cites it
2 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Predicting the stone-free status post percutaneous nephrolithotomy: a meta-analysis of machine learning models.Urolithiasis · 2026Pooled it
- Application of virtual reality in optimizing surgical outcomes and resident training in percutaneous nephrolithotomy: A randomized control trial.Investigative and clinical urology · 2025Trial
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Authors and funding
4 authors.
Funding
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Abstract
objectiveThe objective was to assess the reliability and validity of "S.T.O.N.E" nephrolithometry scoring system to predict the stone-free rate (SFR) after percutaneous nephrolithotomy (PNL).
methodsA total of 123 patients with unilateral radiopaque stones ≥2 cm were included in the study. According to S.T.O.N.E score, five parameters available from preoperative computed tomography (CT) without contrast were measured: stone size (S), tract length (T), obstruction (O), number of involved calices (N), and essence of stone (E). The Stone free rates evaluated within one month postoperatively by plain X-ray and/or CT scan without contrast.
resultsThe mean S.T.O.N.E. score in this study was 7.4 in stone-free (SF) group and 9.3 in residual stone group (
conclusionThis score predicted the clearance after PNL. The size of calculi and number of calices involved statistically affected the stone clearance, whereas other S.T.O.N.E scoring parameters were not. There was a statistically significant difference between SF and residual stones groups according to the hospital stay (
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