Adam Ostrzenski, MD, PhD, of St. Petersburg, Fla., describes the G-spot as: "an erectile body... causing elevation of the [front of the] vaginal wall at the beginning of the sexual excitement."
reports the G-spot
is named after Ernst Grafenberg, a German gynecologist, who, in a paper published in the International Journal of Sexology
in 1950, first described it as an "erotic zone" on the front wall of the vagina along the urethra. The G-spot is said to be a source of "sexual stimulation to about 50 percent of women." According to Science Daily
, women have for centuries been reporting engorgement of the upper, anterior part of the vagina during sexual excitement, but structures involved in this phenomenon were never determined.
Whether there really is an anatomical structure corresponding to the sensation reported by women who claim the G-spot sensation has remained a matter of debate among specialists. While there is no scientific evidence of a surgical procedure that can enhance G-spot sensitivity in women, many gynecologic surgeons claim such procedures.
According to WebMD
, Ostrzenski performed a seven-hour dissection in which he carefully cut through five layers of vaginal tissue and muscles and uncovered a bluish sac located on top of a structure called the perineal membrane. The surgeon opened the sac and found a bluish tissue that looks like a tiny bunch of grapes with a tail less than a third of an inch long. He said: "This is definitely not anywhere near a routine dissection. The structure itself is very, very small. I could see that unless you were very, very careful, you could easily go right through the tissues and not find it."
reports that Ostrzenski, in his paper published this week in the Journal of Sexual Medicine
, and titled "G-spot Anatomy: A New Discovery,"
describes the G-spot as a sac-like structure roughly one-eighth of an inch in diameter, located on the front wall of the vagina. According to Ostrzenski, the tissue appears to be an erectile tissue, and he speculates that under pressure the tissue lifts the vaginal wall and may either generate its own sexual sensations or trigger sensations around the clitoris. The study abstract
said the G-spot is "located on the dorsal perineal membrane, 16.5 mm from the upper part of the urethral meatus, and creates a 35° angle with the lateral border of the urethra. The lower pole (tail) and the upper pole (head) were located 3 and 15 mm next to the lateral border of the urethra, respectively. Grossly, the G-spot appeared as a well-delineated sac with walls that resembled fibroconnective tissues and resembled erectile tissues."
Ostrzenski's findings, however, are based only on a single dissection performed on a deceased 83-year-old woman and some experts have raised questions about the validity of his conclusions. WebMD
reports Elena Ratner, MD, assistant professor of obstetrics, gynecology and reproductive medicine at Yale University, said: "The feeling in my limited field is that this is not real." She said that findings from a single dissection, especially one performed on an elderly woman, are not sufficient proof that the structure observed is found in other women or that it is source of sexual sensation. Ratner queries: "Who is to say that this thing they found on her dissection was the center of pelvic pleasure?"
A sex therapist Lenore Tiefer, PhD, clinical associate professor of psychiatry at New York University Medical Center also dismissed Ostrzenski's findings, saying: "We can conclude absolutely nothing from this paper since we know nothing about the sexual life of the dead woman."
However, Christopher Estes, MD, assistant professor of obstetrics and gynecology at the University of Miami, does not dismiss Ostrzenski's findings but says a single case was not sufficient proof. He said: "This certainly is suggestive of an anatomical structure that would correlate with a G-spot. Women who experience orgasms from a G-spot will describe a hardening on the inside of the vagina, a little almond-or peanut-shaped protuberance. This is consistent with that."
But Ostrzenski said the reason why the G-spot remained a mystery for so long is that knowledge about the details of female sexual anatomy is limited and the textbooks are often inaccurate .
According to Time Healthland
, if Ostrzenski's discovery is confirmed it could shed new light on female sexual function and may lead to new surgical procedures for enhancement of the G-Spot.
reports Ostrzenski claims to have performed enhancement operations. And Mark Scheinberg, MD, the surgeon who photographed his dissection claims that his collagen injections, which he offers at his clinic in Deerfield Beach, Fla., enhance G-spot function.
Ostrzenski says he is working on a new procedure he calls "G-Spot Plasty," to improve on G-spot sensitivity.
reports Ostrzenski plans to travel to Poland to conduct more dissections and study the tissues in greater detail. Due to the fact that the dissection was carried out on an elderly woman, he thinks that the structure may look different in younger women.