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1. the region of the body between the anus and the genital organs, including some of the underlying structures
2. the nearly diamond-shaped surface of the human trunk between the thighs



in man, the anatomical region that comprises the pelvic floor and is located between the apex of the coccyx posteriorly, the apex of the subpubic arch anteriorly, and the ischial tuberosities laterally.

In obstetrics, the perineum is the space between the anus and the posterior commissure of the labia majora. Its bony foundation includes the pelvic ischial tuberosities, the pubic bone, and the coccyx. The perineum also contains muscles, ligaments, fatty tissue, vessels, nerves, and some internal organs. Shaped like a rhombus, it is divided into two triangles by a line that joins the ischial tuberosities; the male urethra or the female urethra and vagina pass through the anterior urogenital triangle. The rectum passes through the posterior, or anal, triangle.

Injuries to the perineum can consist of closed or open wounds. They arise most often with fractures of the pelvic bone when there is a great displacement of fragments (indirect mechanism) or with a blow to the perineum (direct mechanism). On the average, 10 percent of all women suffer perineal ruptures during childbirth, most often with the birth of the first child. The most common diseases of the perineum are suppurative processes near the rectum upon injuries to the rectal mucosa. Surgery is required to treat injuries and suppurative diseases of the perineum.


The portion of the body included in the outlet of the pelvis, bounded in front by the pubic arch, behind by the coccyx and sacrotuberous ligaments, and at the sides by the tuberosities of the ischium.
The region between the anus and the scrotum in the male, between the anus and the posterior commissure of the vulva in the female.
References in periodicals archive ?
It found that restricting episiotomy appeared to have a number of benefits: there was less severe posterior perineal trauma, less suturing, fewer healing complications, and no difference in severe vaginal/perineal trauma, dyspareunia, urinary incontinence or several pain measures.
Minimizing postpartum pain: A review of research pertaining to perineal care in childbearing women.
Sonuc: Suprapubik sistoskopi perineal uretroplasti sirasinda yararlanilabilecek kolaylikla uygulanabilen bir yardimci yontemdir.
A high index of suspicion, early diagnosis and intervention with appropriate measures which included debridement of perineal wound limited progression of gangrene to just loss of nails, which eventually grew back.
In my practice, when a patient complains of splinting or incomplete evacuation, I suspect a distal rectocele and a deficient perineal body.
Perineal skin assessment will help drive prevention and treatment choices; ongoing skin assessments will help determine if the interventions are effective.
Yates (2002) gives an opinion that NZ midwives have tended to leave minor perineal tears to heal spontaneously.
We have all heard the discussions about perineal massage--some swear by it, some think it's a waste of time, and some are indifferent to it.
O'Brien also searches for physical clues for the infertility, including abdominal, scrotal or perineal scars.
2) This infection spreads rapidly throughout the perineal and scrotal tissues and may begin in a perirectal abscess.
However, examination of the clinical anatomy of the perineum revealed that the deep, fat filled, ischiorectal fossae lie between the perineal skin and these muscles.
Whatever perineal cleanser the facility chooses should be formulated to gently remove urine and fecal matter.