Does performing percutaneous nephrolithotomy in the split-leg modified lateral position reduce the overall operative time compared to the standard prone position?

Split-Leg Modified Lateral versus Prone Position in Percutaneous Nephrolithotomy: A Prospective, Randomized Trial

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN75387858

Enrollment

130

Registered

2020-04-06

Start date

2017-11-07

Completion date

Unknown

Last updated

2020-04-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Renal stones requiring percutaneous nephrolithotomy Urological and Genital Diseases Renal stones requiring percutaneous nephrolithotomy

Interventions

According to the position technique during percutaneous nephrolithotomy (PNL), the study participants will be randomly assigned to one of the two treatment groups. The first group: in which the PNL pr

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Requires percutaneous nephrolithotomy (PNL) intervention for renal stones

Exclusion criteria

Exclusion criteria: 1. Complete staghorn stone 2. Pregnancy 3. Uncorrectable coagulation disorders 4. Urinary tract obstruction distal to the stone 5. Active urinary tract infection (UTI) 6. Renal anomalies 7. Severe orthopaedic deformity

Design outcomes

Primary

Measure	Time frame
Overall operative time, defined as the time from induction of anesthesia to the placement of nephrostomy tube in minutes	—

Secondary

Measure	Time frame
1. Track formation time defined as the time from pelvicalyceal puncture till Amplatz sheath fixation in minutes 2. Fluoroscopy time defined as the time of fluoroscopic x-ray exposure during all steps of the procedure in minutes 3. The stone-free rate (SFR) measured using abdominal NCCT at 2 weeks postoperatively. Stone free status is defined as no visualized stone or residual fragments <3 mm on abdominal NCCT. 4. Re-treatment rate measured from patient notes at 2 years. Defined as the need for more than one session of PNL procedure to treat the renal stone during the trial period. 5. Hospitalization duration in days assessed from the patient notes at discharge 6. Incidence of bleeding and other perioperative complications assessed from patient notes at discharge. PNL complications will be classified and graded according to the modified Clavien classification system	—

Measure

Time frame

1. Track formation time defined as the time from pelvicalyceal puncture till Amplatz sheath fixation in minutes 2. Fluoroscopy time defined as the time of fluoroscopic x-ray exposure during all steps of the procedure in minutes 3. The stone-free rate (SFR) measured using abdominal NCCT at 2 weeks postoperatively. Stone free status is defined as no visualized stone or residual fragments <3 mm on abdominal NCCT. 4. Re-treatment rate measured from patient notes at 2 years. Defined as the need for more than one session of PNL procedure to treat the renal stone during the trial period. 5. Hospitalization duration in days assessed from the patient notes at discharge 6. Incidence of bleeding and other perioperative complications assessed from patient notes at discharge. PNL complications will be classified and graded according to the modified Clavien classification system

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Countries

Egypt

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026