What forms the posterior border of the superficial perineal space?

What forms the posterior border of the superficial perineal space?

• A. Inferior fascia of urogenital diaphragm
• B. Union of perineal membrane & Colle's fascia
• C. Inner surface of ischiopubic rami
• D. Perineal membrane

Answer: (B)

The superficial perineal pouch is bounded above by the perineal membrane (the inferior fascia of the urogenital diaphragm) and below by Colles’ fascia. The posterior border is where these two fascial layers meet and blend around the perineal body. In other words, the union of the perineal membrane with Colles’ fascia forms the posterior boundary of the superficial perineal space. The other boundaries are defined by different structures: the perineal membrane is the superior boundary, the inner surface of the ischiopubic rami helps define the lateral aspect, and Colles’ fascia alone does not form the posterior limit.

The superficial perineal pouch is bounded above by the perineal membrane (the inferior fascia of the urogenital diaphragm) and below by Colles’ fascia. The posterior border is where these two fascial layers meet and blend around the perineal body. In other words, the union of the perineal membrane with Colles’ fascia forms the posterior boundary of the superficial perineal space. The other boundaries are defined by different structures: the perineal membrane is the superior boundary, the inner surface of the ischiopubic rami helps define the lateral aspect, and Colles’ fascia alone does not form the posterior limit.