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Related Experiment Video

Updated: Oct 17, 2025

In situ Transverse Rectus Abdominis Myocutaneous Flap: A Rat Model of Myocutaneous Ischemia Reperfusion Injury

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Ring Flap Metoidioplasty.

Alysen Demzik¹, Liem Snyder¹, Solomon Hayon¹

¹Department of Urology, University of North Carolina-Chapel Hill.

|October 8, 2021

Summary

This summary is machine-generated.

This study details the ring flap metoidioplasty technique for transgender men, achieving masculine genitalia and the ability to void standing. Complications included urethrocutaneous fistula and urethral stricture in a small percentage of patients.

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Area of Science:

Urology
Gender-affirming surgery

Background:

Metoidioplasty is a surgical procedure for gender affirmation.
The ring flap technique offers a specific approach to phallic reconstruction.

Purpose of the Study:

To describe the surgical technique of ring flap metoidioplasty.
To report outcomes and complications associated with this procedure in transgender men.

Main Methods:

Description of the ring flap metoidioplasty technique, including urethroplasty, vaginectomy, and perineal masculinization.
Simultaneous suprapubic tube placement for urinary diversion.
Exclusion of certain procedures (monsplasty, ligament division) during the primary surgery to protect urethral pedicles.

Main Results:

52 transgender men underwent the procedure between November 2017 and June 2021.
Urethrocutaneous fistula occurred in 13% of patients, with spontaneous closure in one.
Urethral stricture occurred in 8% of patients, and 15% required fistula repair or urethroplasty.

Conclusions:

Ring flap metoidioplasty enables the creation of masculine-appearing genitalia.
The technique facilitates the ability for patients to void while standing.