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Updated: May 25, 2026

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Published on: July 8, 2025
Flank suspended supine position for percutaneous nephrolithotomy.
Tie-jun Pan1, Gong-cheng Li, Zhang-qun Ye
1Department of Urological Surgery, Wuhan General Hospital of Guangzhou Command of PLA, Wuhan, China.
The flank suspended supine position (FSSP) is a safe and effective method for percutaneous nephrolithotomy (PCNL). This new positioning technique shows promise for renal stone treatment.
Area of Science:
- Urology
- Minimally Invasive Surgery
Background:
- Traditional prone and supine positions for percutaneous nephrolithotomy (PCNL) have limitations.
- A novel positioning technique, the flank suspended supine position (FSSP), has been developed for PCNL.
Purpose of the Study:
- To evaluate the safety and efficacy of the flank suspended supine position (FSSP) for percutaneous nephrolithotomy (PCNL).
Main Methods:
- A retrospective study of 150 patients undergoing PCNL in the FSSP under epidural anesthesia.
- Data collected included operation time, bleeding rate, stone-free rate, and complications.
Main Results:
- The FSSP was well-tolerated by all patients.
- The initial stone-free rate was 83%, with successful treatment of residual stones in 18 of 26 cases via repeat PCNL or ESWL.
- Mean operation time was 78.29 minutes, and mean hospital stay was 7.63 days, with no reported pleural or visceral injuries.
Conclusions:
- The flank suspended supine position (FSSP) is a safe and effective positioning method for PCNL.
- Further randomized studies are needed to compare FSSP directly with the traditional prone position.
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