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Updated: Jun 4, 2026

Detrusor Underactivity Model in Rats by Conus Medullaris Transection
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TOT does not affect the urethral sphincter innervation: a pilot study.

Salvatore Caruso1, Marco Marzio Panella, Stefano Cianci

  • 1Research Group for Sexology, Dipartimento Materno-Infantile e Scienze Radiologiche, University of Catania, Catania, Italy. scaruso@unict.it

International Urogynecology Journal
|February 12, 2011
PubMed
Summary

Transobturator tape (TOT) surgery for stress urinary incontinence (SUI) does not cause neuromuscular damage to the urethral sphincter. Electromyography (EMG) showed no significant changes in sphincter function after the procedure.

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Area of Science:

  • Urogynecology
  • Neuromuscular Electrophysiology

Background:

  • Stress urinary incontinence (SUI) is a common condition affecting women.
  • Transobturator tape (TOT) is a minimally invasive surgical option for SUI.
  • Concerns exist regarding potential neuromuscular damage from prosthetic tape placement.

Purpose of the Study:

  • To evaluate the impact of transobturator tape (TOT) surgery on the striated urethral sphincter.
  • To exclude neuromuscular denervation damage using pre- and postoperative electromyography (EMG).

Main Methods:

  • Seventeen women with SUI underwent urogynecologic and urodynamic assessment.
  • Electromyography (EMG) of the striated urethral sphincter was performed before and four months after TOT surgery.
  • EMG potentials (amplitude and duration) were measured during voluntary contraction and at rest.

Main Results:

  • No statistically significant differences were observed in the mean amplitude of EMG potentials before and after TOT surgery.
  • A statistically significant change in the duration of EMG potentials was noted during maximal contraction post-treatment (P ≤ 0.05).

Conclusions:

  • Transobturator tape (TOT) surgery appears safe for the urethral sphincter.
  • The procedure does not seem to cause significant denervation or devascularization of pelvic structures.
  • TOT surgery does not result in damage to the urethral sphincter.