Purpose : we determined that sonography permits us to study functional anatomy of the clitoris during vaginal penetration and we demonstrated that the G point has a close relationship with the clitoris especially when the clitoris is enlarged by sexual stimulation. Materials and Methods : a series of sonographic examinations of 5 healthy volunteers with no prior surgery was performed.We used an echogenic sex toy to stimulate the G point and a 19Mhertz vaginal probe put on top of the vulva to visualize the clitoris.Despite the arousal being incomplete due to a technical atmosphere rather than an erotic one, we found interesting changes in the clitoris. Results : the transversal and axial planes revealed that the right and left clitoral bodies join in the middle and form a bridge over the anterior vaginal wall, above the G point.Then they form the raphe and in a caudal location the glans which looks like an hypoechogenic roundish structure.The stimulation of the G point evokes a contraction of the vagino levator and a vagino pubo rectalis reflex, with a resulting levator ani muscle contraction.Then, in a descending movement the clitoral bodies get very close of the G point especially when the clitoris enlarges with arousal.When pressure is applied on the anterior vaginal wall, a doppler color reveals an increasing flow in the clitoral bodies, and when the pressure stops the colored flow decreases significantly after a short period of time. Conclusions : Ultrasonography is an appropriate mean for studying sexual function.It has revealed that the G point is not an anatomical structure but a functional one which depends on the clitoris’ movement and vascular enlargement.
Conflict of Interest: None disclosed
Financial Support/Funding: None disclosed
Recorded: Sydney, Australia, April 2007
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