Question

In injury to the penis, which of the following prevents extravasation of blood -

• A. Buck's fascia
• B. Fascia of Camper
• C. Fascia transversalis
• D. None

Hint:

The deep membranous sheath over tunica albuginea limits penile hematoma.

Answer 1

The Correct Option is A

Step 1: The question concerns which fascial layer confines blood after penile injury. Superficial to the tunica albuginea lies Buck's fascia, the deep layer of the superficial fascia of the penis.

Step 2: Buck's fascia is a strong continuation of Colles' fascia (the membranous layer of the superficial fascia of the perineum). When it stays intact, it acts as a barrier and restricts the hematoma to the penile shaft alone. So option (a) is correct.

Step 3: With Buck's fascia intact the contained blood produces the classic "egg-plant" or aubergine deformity of the penis seen in penile fracture.

Step 4: If Buck's fascia is disrupted, blood escapes along Colles' fascia and tracks into the scrotum, perineum and suprapubic region in a butterfly pattern. Camper's fascia is fatty and superficial, and the fascia transversalis is intra-abdominal, so neither confines penile blood.