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The transgluteal approach to shockwave lithotripsy to treat distal ureter stones: a prospective, randomized, and multicenter study

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An Author Correction to this article was published on 11 April 2018

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Abstract

Purpose

We compared the outcomes of SWL to treat distal ureter stones with regard to the conventional prone and supine positions using the transgluteal approach through the greater sciatic foramen.

Methods

A prospective, randomized, single-blind, and multicenter study was conducted between October 2014 and July 2015. The inclusion criteria were radio-opaque distal ureter stones with a maximum diameter of 0.5−2 cm as measured on a CT scan. The included 160 patients were randomly assigned to two groups: the prone group (n = 80; treated in the conventional prone position) and the transgluteal group (n = 80; treated in the supine position using a transgluteal approach). In the latter group, the focused shock wave was transmitted through the greater sciatic foramen with the head positioned at a 40° angle to the vertical. “Stone-free” was defined as the complete clearance of stone fragments, assessed using a CT scan at 2 weeks after treatment. Overall satisfaction was self-reported using a 0–5 Likert scale.

Results

The overall efficacy was 66.9%. The stone-free rate was significantly higher in the transgluteal group (72.6%) than in the prone group (54.7%; odds ratio 2.413, 95% CI 1.010−5.761, P = 0.023). No serious adverse events due to treatment were observed in either group. The satisfaction score of the transgluteal group was 4.21 ± 0.81, and 83.6% were willing to repeat the same procedure if necessary.

Conclusions

SWL using the transgluteal approach via a supine position through the greater sciatic foramen was more effective than via the conventional prone position. Furthermore, this approach provided a comparably safe and satisfactory procedure.

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Change history

  • 11 April 2018

    The funding number was incorrect in the original published article. The correct funding number should read as follows:

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Funding

This research was supported by Hallym University Research Fund 2015(HURF-2015-27).

Author information

Authors and Affiliations

  1. Department of Urology, Hallym University Songtan Sacred Heart Hospital, Hwaseong, Korea

    Min Soo Choo, Jun Hyun Han, Jong Keun Kim & Seong Ho Lee

  2. Department of Urology, Hallym University Chuncheon Sacred Heart Hospital, Chuncheon, Korea

    Tae Young Shin, Won Ki Lee & Sang Kon Lee

Authors
  1. Min Soo Choo
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  2. Jun Hyun Han
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  3. Jong Keun Kim
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  4. Tae Young Shin
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  5. Won Ki Lee
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  6. Sang Kon Lee
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  7. Seong Ho Lee
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Contributions

Author contributions

MSC and SHL designed and organized this prospective multicenter study; MSC and JHH summarized and analyzed the multicenter data and wrote the manuscript; JKK, TYS, WKL and SKL were the clinicians who enrolled participants and performed the shockwave lithotripsy procedures on the distal ureter stones and recorded the data at each center.

Corresponding author

Correspondence to Seong Ho Lee.

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Conflict of interest

The authors declare that they have no conflicts of interest.

Ethical standard

This study was conducted according to the principles of the Declaration of Helsinki.

Human and animal rights

Clinical Research involving Human Participants but no Animals.

Informed consent

The written informed consent form was signed by each participant.

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Cite this article

Choo, M.S., Han, J.H., Kim, J.K. et al. The transgluteal approach to shockwave lithotripsy to treat distal ureter stones: a prospective, randomized, and multicenter study. World J Urol 36, 1299–1306 (2018). https://doi.org/10.1007/s00345-018-2244-4

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  • DOI: https://doi.org/10.1007/s00345-018-2244-4

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