Three-dimensional transrectal ultrasound of the male urethral rhabdosphincter

World Journal of Urology
Hannes StrasserG Bartsch

Abstract

The rhabdosphincter of the male urethra is an omega-shaped loop of striated muscle fibers that surrounds the membranous urethra at its lateral and anterior aspects. We investigated whether this muscle can be visualized by means of three-dimensional ultrasound to define morphological and dynamic ultrasound criteria. We examined the rhabdosphincter of the male urethra in 77 patients by means of this new imaging technique; 37 patients presented with urinary stress incontinence after transurethral resection of the prostate or radical prostatectomy while 40 were fully continent after radical prostatectomy and served as a control group. Contractility of the muscle was quantified by a specially defined parameter (rhabdosphincter-urethra distance). The anatomical arrangement and the contractions of the rhabdosphincter-loop could be clearly visualized in three-dimensional transrectal and transurethral ultrasound; during contraction the rhabdosphincter retracts the urethra, pulling it towards the rectum. We detected defects and postoperative scarrings in the majority of the patients with postoperative urinary stress incontinence. Furthermore, the patients presented with thinnings in parts of the muscle and atrophies of the rhabdosphincte...Continue Reading

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Citations

Dec 8, 2004·Der Urologe. Ausg. A·H StrasserG Bartsch
May 13, 2008·World Journal of Urology·Marc C Smaldone, Michael B Chancellor
May 17, 2011·Journal of Endourology·Holger GerullisThomas Otto
Jun 21, 2007·Neurourology and Urodynamics·Akira FurutaMichael B Chancellor
Apr 17, 2007·BJU International·Michael MitterbergerWolfgang Horninger
Feb 25, 2019·International Urology and Nephrology·Andrea BoniEttore Mearini
May 16, 2018·The Journal of Clinical Pediatric Dentistry·Ji-Youn KimJe-Won Shin
Apr 10, 2021·Nature Reviews. Urology·Sean F MungovanManish I Patel
Jan 1, 2020·Nihon Hinyōkika Gakkai zasshi. The japanese journal of urology·Shuichiro KobayashiSatoshi Kitahara

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