The urogenital triangle of the perineum is the anterior half of the perineum and is oriented in the horizontal plane. It contains the roots of the external genitalia (Fig. 5.71) and the openings of the urogenital system.
The urogenital triangle is defined: laterally by the ischiopubic rami, posteriorly by an imaginary line between the ischial tuberosities, and anteriorly by the inferior margin of the pubic symphysis.