Crus of penis

The Crus of Penis (plural: Crura) is a part of the human male anatomy that forms a portion of the Corpus Cavernosum, which is responsible for erectile function. The crura are two elongated masses of erectile tissue, which are covered by the Ischiocavernosus muscle and extend from the inner part of the Ischial tuberosity to the sides of the Penis.

The Crus of Penis is part of the Corpus Cavernosum, shown here in a cross-section of the male pelvic area.

Anatomy

The crura of the penis are the proximal parts of the corpus cavernosum, which are firmly attached to the ischial tuberosity. They are cylindrical in shape and about 2.5 cm in length. The crura are surrounded by the ischiocavernosus muscle, which aids in maintaining an erection by compressing the outflow of blood from the penis.

Function

The primary function of the crus of the penis is to support the erection of the penis. During sexual arousal, the Corpora Cavernosa and Corpus Spongiosum fill with blood, causing the penis to become erect. The crura, being part of the corpora cavernosa, play a crucial role in this process.

Clinical Significance

Injuries to the crus of the penis can lead to Erectile Dysfunction. Surgical procedures such as penile prosthesis implantation may involve the crura. Conditions such as Peyronie's disease can also affect the crus of the penis.

See Also

• Corpus Cavernosum
• Ischiocavernosus muscle
• Erectile Dysfunction
• Peyronie's disease