3D model of the new nerve map. Yellow = nerves, green and purple = erectile tissue, red and blue = arteries and veins. Credit: cirp GmbH

Scientists just advanced tech to finish a job the medical world ignored for thirty years: they finally mapped the clitoris. By using high-powered X-rays to peer inside donated tissue, researchers created the first-ever 3D map of the organ’s intricate nerve network, revealing a dense “tree” of sensation that is much larger and more complex than old-school textbooks ever admitted.

It is a landmark discovery that came embarassingly late—men had their comparable nerves mapped back in the 90s. But the study does much more than just fix a historic error. This high-resolution map provides a vital new roadmap for surgeons, offering the precision needed to protect sensation during gender-affirming procedures, labiaplasty, and reconstructive surgery for the 230 million survivors of female genital mutilation.

A Blind Spot in Plain Sight

The clitoris is central to human sexual pleasure, yet it remains a marginal subject in scientific literature. Helen O’Connell, the Melbourne urologist whose landmark work in 1998 helped reveal the organ’s broader anatomy, put it bluntly. “It has been deleted intellectually by the medical and scientific community, presumably aligning attitude to a societal ignorance,” she told The Guardian.

Much of the clitoris sits inside the body, hidden behind the pubic bone. Traditional dissection and standard MRI scans can capture the organ’s general shape, but they fail to catch the delicate nerve fibers that provide sensation.

Researchers had probed clitoral innervation before, including a 2023 paper estimating axon counts in the dorsal nerves of the clitoris. The new study attacked that problem with a far more powerful tool: synchrotron X-rays, generated by a particle accelerator, to create micron-scale 3D images of soft tissue.

Ju Young Lee of Amsterdam University Medical Center and her colleagues scanned two postmortem pelvic specimens from donors ages 59 and 69. They imaged the full pelvis at one resolution and zoomed in further on the clitoral glans—the small external tip, which makes up only a fraction of the organ but contains its most sensitive tissue.

What they saw was a dense, branching nerve structure.

“This is the first ever 3D map of the nerves within the glans of the clitoris,” Lee told The Guardian.

Branching Like a TreeDorsal nerve of the clitoris within the glans of the clitoris.
A). Five large nerve trunks are shown within the glans, labelled in different colours. The grey line indicates the contour of the glans surface.
B-D). Sections along the distal and proximal ends of the glans are shown with an overlay of five nerve trunks with the same colour coding as panel A.
Credit: Lee et al.

At the center of the study lies the dorsal nerve of the clitoris, the organ’s main sensory nerve. The researchers traced its path from deeper pelvic structures into the glans, where five large nerve trunks appeared in both specimens. These trunks measured roughly 0.2 to 0.7 millimeters across and split into smaller branches as they approached the glans surface, forming what the authors describe as a tree-like pattern.

The paper also challenges a familiar anatomical assumption. Earlier dissection-based work had suggested that the dorsal nerve gradually diminished as it neared the glans. Lee’s team argues that the nerve does not fade away. Instead, it continues into the glans and branches extensively there, a detail that older methods simply could not capture.

The scans also showed that these nerves extend beyond the glans. Some branches travel toward the mons pubis, the rounded tissue above the pubic bone. Others reach the clitoral hood. Another nerve, the posterior labial nerve, extends into the labial structures and also sends branches toward the sides of the clitoral body. The picture that emerges is of an organ with a much denser and wider sensory network than many medical drawings have implied.

Georga Longhurst, head of anatomical sciences at St George’s, University of London, told The Guardian, “I was especially fascinated by the high-resolution images within the glans, the most sensitive part of the clitoris, as these terminal nerve branches are impossible to see during dissection.”

Why Surgeons Should Pay Close Attention

The authors say their findings have “immediate impact” for operations around the vulva. They point in particular to reconstruction after female genital mutilation, as well as gender-affirming surgery and other pelvic or genital procedures.

Female genital mutilation (FGM) affects more than 230 million girls and women alive today in 30 countries across Africa, the Middle East, and Asia, according to the World Health Organization figures. In common forms of the procedure, the visible part of the clitoris and surrounding tissues may be removed. The damage can lead to severe bleeding, infection, urinary problems, menstrual difficulties and complications in childbirth.

“About 22% of women who undergo surgical reconstruction after mutilation experience a decline in orgasmic experience after their operation,” Lee said, adding that a better understanding of the nerves could help lower that number.

The same logic may apply to other surgeries. The paper argues that doctors may need to rethink the so-called “danger zone” used in cosmetic genital surgery, because some nerve branches appear to extend beyond areas surgeons have typically treated as highest risk. The researchers also note the rise of labiaplasty and suggest that more precise anatomical knowledge could help protect sensation.

A Beginning, Not a Final WordOverview of the clitoris nerves. Credit: Lee et al.

The study is still a preprint, which means outside experts have not yet peer-reviewed it. The sample was also small: just two postmortem donors, both postmenopausal. The authors acknowledge that they would need a larger and more age-diverse set of samples to capture the full range of anatomical variation. They also focused on somatic sensory nerves, not the full autonomic nerve supply.

“Orgasm is a brain function that leads to improved health and wellbeing as well as having positive implications for human relationships and possibly fertility,” said O’Connell.

The level of attention to the clitoris is severely overdue. An organ tied to pleasure, intimacy, and surgery should not have had to wait until 2026 for its first detailed 3D nerve map.

Now, at last, the clitoris has begun to come into focus as a complex human organ on its own terms.

The preprint is available on bioRxiv.