The crura are the two diverging rear ends of the corpora cavernosa, attached firmly to the inner sides of the ischiopubic rami. Each is covered by an ischiocavernosus muscle.
| Location | Superficial perineal pouch, along each ischiopubic ramus |
|---|---|
| Parts |
|
| Nerve Supply | Cavernous nerves (parasympathetic, S2-S4); Pudendal nerve (ischiocavernosus) |
| Blood Supply | Deep artery of the penis; Artery to the crus (internal pudendal artery) |
| Venous drainage |
|
| Lymphatic drainage |
|
Anchor the penis to the pelvis and fill with blood during erection, compressed by ischiocavernosus to stiffen it.
Injury to the crura can occur with pelvic fractures and straddle trauma and contribute to erectile dysfunction. Prolonged cycling pressure on this area may cause temporary numbness or erectile problems.
Damage to the crura, arteries or nerves from pelvic fracture.
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