Buck's fascia

Buck's Fascia

Anatomical illustration of the male reproductive system

Buck's fascia is a deep layer of fascia in the penis that plays a crucial role in the structural integrity and function of the male reproductive organ. It is a continuation of the deep perineal fascia and is named after the British anatomist Gurdon Buck.

Anatomy

Buck's fascia envelops the three erectile bodies of the penis: the paired corpora cavernosa and the single corpus spongiosum. It is a dense, fibrous sheath that provides support and maintains the position of these structures during erection.

Cross-section of the penis showing internal structures

Structure

Buck's fascia is located deep to the superficial fascia of the penis, also known as Dartos fascia. It is continuous with the deep fascia of the perineum and extends from the base of the penis to the glans. The fascia is composed of collagen fibers that provide tensile strength and elasticity, allowing the penis to expand during erection.

Relations

Buck's fascia is closely associated with the tunica albuginea, the fibrous envelope surrounding the corpora cavernosa. It also encases the dorsal artery of the penis, the dorsal nerve of the penis, and the deep dorsal vein of the penis.

Function

The primary function of Buck's fascia is to support the erectile tissues of the penis. During erection, it helps maintain the shape and rigidity of the penis by restricting the expansion of the corpora cavernosa. This restriction increases the pressure within the erectile tissues, facilitating penile rigidity.

Ultrasound image of a normal penis

Clinical Significance

Buck's fascia is important in the context of penile trauma and surgical procedures. Injuries to the penis, such as penile fracture, often involve rupture of the tunica albuginea and can extend to Buck's fascia. Surgical repair of these injuries requires careful reconstruction of the fascia to restore normal function.

In urology, understanding the anatomy of Buck's fascia is essential for procedures such as penile prosthesis implantation and circumcision.

Related Pages

• Penis
• Corpora cavernosa
• Corpus spongiosum
• Tunica albuginea
• Dartos fascia

Detailed view of the spermatic cord