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

NCT06809582 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 128

Last updated 2025-08-15

No results posted yet for this study

Summary

The goal of this clinical trial is to determine whether the surgical position during retrograde intrarenal surgery (RIRS) affects stone-free rates in adults with kidney stones. The main questions it aims to answer are:

* Does the modified lithotomy position result in a higher stone-free rate compared to the standard lithotomy position?
* Are there differences in complication rates between the two surgical positions?

Researchers will compare patients undergoing RIRS in the standard lithotomy position to those in the modified lithotomy position (30-degree Trendelenburg with elevated surgical side) to assess its impact on stone clearance and surgical outcomes.

Participants will:

* Be randomly assigned to one of two surgical positions
* Undergo RIRS with standard surgical procedures
* Have follow-up imaging to assess stone clearance after surgery

This study aims to improve surgical techniques and patient outcomes in kidney stone treatment.

Conditions

  • Stone, Kidney
  • Stones, Kidney
  • Stone;Renal

Interventions

PROCEDURE

The T-Tilt position

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.

Sponsors & Collaborators

  • Ondokuz Mayıs University

    lead OTHER

Principal Investigators

  • Murat Gulsen · Ondokuz Mayıs University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-01-01
Primary Completion
2025-12-01
Completion
2026-06-01

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06809582 on ClinicalTrials.gov