Urogenital triangle

Last revised by Assoc Prof Craig Hacking on 27 Oct 2021

The urogenital triangle forms the anterior half of the diamond-shaped perineum. The triangle's corners are defined by the pubis symphysis anteriorly and the ischial tuberosities anterolaterally. The anterolateral borders are the ischiopubic rami and the posterior border is the transverse perineal muscles.

It contains the penis and scrotum in males and mons pubis, labia majora and minora, clitoris and vaginal and urethral orifices in females.

The perineal membrane, a thin sheet of fascia, covers the urogenital diaphragm inferiorly which divides the urogenital triangle into the deep perineal pouch and the superficial perineal pouch.

ADVERTISEMENT: Supporters see fewer/no ads

Cases and figures

  • Figure 1: female urogenital triangle
    Drag here to reorder.
  • Figure 2: male urogenital triangle
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.