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The perineum refers to a shallow compartment of the body (perineal compartment) bounded by the pelvic outlet and separated from the pelvic cavity by the fascia covering the inferior aspect of the pelvic diaphragm, formed by the levator ani and coccygeus muscles.
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The perineum refers to a shallow compartment of the body (perineal compartment) bounded by the pelvic outlet and separated from the pelvic cavity by the fascia covering the inferior aspect of the pelvic diaphragm, formed by the levator ani and coccygeus muscles. • In the anatomical position, the surface of the perineum—the perineal region—is the narrow region between the proximal parts of the thighs; however, when the lower limbs are abducted, it is a diamond-shaped area extending from the mons pubis anteriorly in females, the medial surfaces (insides) of the thighs laterally, and the gluteal folds and superior end of the intergluteal (natal) cleft posteriorly. • The osseofibrous structures marking the boundaries of the perineum (perineal compartment) are the: • Pubic symphysis, anteriorly • Ischiopubic rami (combined inferior pubic rami and ischial rami), anterolaterally • Ischial tuberosities, laterally • Sacrotuberous ligaments, posterolaterally. • Inferiormost sacrum and coccyx, posteriorly. Separation of perineum from pelvis by inferior fascia of pelvic diaphragm