Clinical trial Recruiting at 2 sites Interventional Ages 18 to 70

Self-posturotherapy to clear leftover fragments after lower-pole kidney stone treatment

Official title: Effectiveness of Self-posturotherapy on the Elimination of Residual Fragments After Treatment of Lower Calyx Urinary Stones by Extracorporeal Lithotripsy or Retrograde Flexible Ureteroscopy.

Run by GCS Ramsay Santé pour l'Enseignement et la Recherche · NCT06793540 · Data updated 2026-11-12

This trial will test whether a simple home posturotherapy technique helps people treated with extracorporeal lithotripsy or flexible ureteroscopy for lower-pole kidney stones get rid of remaining fragments over three months.

Quick facts

Study typeInterventional
Ages18 Years to 70 Years
SexAll
Enrollment216 (estimated)
SponsorGCS Ramsay Santé pour l'Enseignement et la Recherche
Academic / other
Locations2 sites (Lyon and 1 other locations)
StatusRecruiting
StartedJune 30, 2025
Main results expectedMay 2027
Study endsMay 2027
Registry record updatedJuly 8, 2025
Trial IDNCT06793540 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults who consent and who were treated for a lower calyx stone under 15 mm by LEC or URSS with documented lower-pole residual fragments, who have no JJ stent in place and who can perform the positioning exercises, are ideal candidates.

Probably not a fit

Patients with renal or ureteral malformations, those with a JJ stent in place, patients whose LEC was interrupted for intolerance, or individuals with physical limitations, morbid obesity, or severe reflux that prevent safe posturotherapy are unlikely to benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Adults treated for lower calyx kidney stones (<15 mm) by extracorporeal lithotripsy (LEC) or retrograde flexible ureteroscopy (URSS) who have residual lower-pole fragments will be taught and asked to perform a self-posturotherapy positioning program at home. Patients with temporary JJ stents must have them removed before inclusion, and those with renal/ureteral malformations or physical limitations are excluded. The main outcome is the presence or absence of residual fragments at three months documented by imaging or endoscopy. The approach aims to mobilize and promote passage of fragments noninvasively to reduce the need for additional procedures.

Why it matters

Potential benefit: If successful, this could increase complete stone clearance after lower-pole procedures without additional invasive treatments.

How similar studies have gone: Small prior studies of positional maneuvers for lower-pole stone clearance have suggested benefit but evidence is limited, so this structured self-posturotherapy approach remains relatively untested at scale.

Who can join: the full rules

Show full inclusion / exclusion criteria
pré Inclusion Criteria:

* Patient having read and signed the consent form for participation in the study • Patient candidate for an intervention on a lower calyx stone \<15mm by LEC or URSS

Patients meeting all of the following criteria may be definitively included in the study:

* Patient treated by LEC, or patient treated by URSS and for whom the presence of lower calyceal fragments has been observed by endoscopy
* Absence of JJ stent (patients for whom a JJ stent was implanted after URSS or before LEC may be included as soon as it is removed)

Exclusion Criteria:

* Patients presenting one of the following criteria will not be included in the study:

  * Renal or ureteral malformation: ureteral stenosis, pyelo-ureteral junction syndrome, horseshoe kidney, para calyceal diverticulum, pelvic kidney.
  * LEC session interrupted due to treatment intolerance
  * Physical disability making posturotherapy impossible (particularly spinal, etc.), morbid obesity, major gastroesophageal reflux, heart or respiratory failure.
  * Balance disorder which would not allow self-posturotherapy to be carried out alone.
  * Patient under legal protection, under guardianship or under curatorship
  * Posturotherapy carried out while wearing a JJ probe
  * Posturotherapy carried out by a third party (physiotherapist or other)
  * Pregnant or breastfeeding patient
  * Patient not affiliated to the French social security system
  * Impossibility of providing the subject with informed information and/or giving written informed consent: dementia, psychosis, disorders of consciousness, non-French speaking patient
  * Treatment that may modify the clearance of fragments (beta blocker, diuretic, etc.)
  * Patient included in another therapeutic study protocol

Where it's running

  • Hôpital Edouard Herriot -
    Lyon, France
    Recruiting
  • Clinique La Croix du Sud
    Quint-Fonsegrives, France
    Recruiting

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.