ABSTRACT
Normal erectile function is dependent on normal vascular and neurologic function as well as elasticity and compliance of all tissue layers of the penis. During tumescence, the penis fills with blood and the corporeal bodies and tunica albuginea reach their limits of compliance causing rigidity. Patients with straight erections have normal and symmetric expansion of the tunica albuginea. Asymmetric expansion of one aspect of their penis causes penile curvature. This could be due to decreased compliance of one aspect of the tunica or foreshortening of one erectile body.
