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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 was hypothesized that the frequency of perineal tears would then be higher in HIV positive parturients because of reduced use of episiotomy and whether perineal trauma was associated with MTCT.
A 48-year-old healthy male who is an avid cyclist presented with a progressive inferior perineal and scrotal swelling for five years.
3) Ironically, if we successfully avoid perineal injuries, our young trainees may require simulation training to learn this tedious repair procedure.
6% reduction in third- and fourth-degree perineal lacerations, compared with preintervention rates (P less than .
Group B: Intermittent suturing: Continuous locking sutures in the vagina, interrupted sutures in the perineal muscles and mattress sutures for skin.
He then quoted a study from GUT 2008 article which stated that when there is unacceptable variation in abdomino perineal excision, it is time to intervene.
Perineal closure method was performed as per surgeon choice and was obtained by primary closure in the majority of patients by closing the ischiorectal, subcutaneous fat and skin in layers.
Perineal travmaya iliskin girisimler ulusal/uluslararasi rehberlerde genel olarak postnatal bakim icerisinde yer bulmaktadir.
Conclusion: The use of non-steroidal anti-inflammatory rectal suppositories was found to be a simple and highly effective modality of reducing the perineal pain.
A curvilinear skin incision was made 1-2 cm lateral to anus over the swelling on perineal region.
45 kg was presented to the University of Tennessee Veterinary Medical Center with a large, firm, bilaterally symmetrical, painful protrusion in the perineal region that had appeared acutely 2 days before presentation.
Strengths of the study: Strengths of this study include the following; first, the study employed BL 23 point (Shen Shu) through acupuncture and acupressure to relieve back pain and perineal pain, but few studies in this field are available.