| pelvic surface of sacrum | The surface of the sacrum that faces downward and forward forming part of the posterior wall of the pelvic cavity. Synonym: facies pelvina ossis sacri. (05 Mar 2000) |
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| pelvic version | Version by means of which a transverse or oblique presentation is converted into a pelvic presentation by manipulating the buttocks of the foetus. (05 Mar 2000) |
| plane of least pelvic dimensions | The plane that extends from the end of the sacrum to the inferior border of the pubic symphysis; it is bounded posteriorly by the end of the sacrum, laterally by the ischial spines, and anteriorly by the inferior border of the pubic symphysis. Synonym: midplane, plane of least pelvic dimensions, plane of midpelvis, third parallel pelvic plane. (05 Mar 2000) |
| plane of pelvic canal | A hypothetical curved line joining the centre point of each of the four planes of the pelvis, marking the centre of the pelvic cavity at every level. Synonym: axis pelvis, plane of pelvic canal. (05 Mar 2000) |
| conjugate diameter of pelvic inlet | Distance from the promontory of the sacrum to the upper posterior edge of the pubic symphysis. Synonym: anteroposterior diameter of the pelvic inlet, conjugata vera, conjugate axis, conjugate diameter of pelvic inlet, diameter mediana, internal conjugate, true conjugate. (05 Mar 2000) |
| conjugate diameter of pelvic outlet | The distance from the tip of the coccyx to the lower edge of the pubic symphysis. See: obstetric conjugate of pelvic outlet. Synonym: conjugate diameter of pelvic outlet. (05 Mar 2000) |
| conjugate of pelvic inlet | Distance from the promontory of the sacrum to the upper posterior edge of the pubic symphysis. Synonym: anteroposterior diameter of the pelvic inlet, conjugata vera, conjugate axis, conjugate diameter of pelvic inlet, diameter mediana, internal conjugate, true conjugate. (05 Mar 2000) |
| conjugate of pelvic outlet | The distance from the tip of the coccyx to the lower edge of the pubic symphysis. See: obstetric conjugate of pelvic outlet. Synonym: conjugate diameter of pelvic outlet. (05 Mar 2000) |
| posterior pelvic exenteration | Removal of the vagina, uterus, adnexa, rectum, anus, and adjacent lymph nodes; a colostomy is necessary. (05 Mar 2000) |
| cystic pelvic mass | <radiology> Physiologic ovarian cyst, The Big Three (ectopic, PID, endometriosis), ovarian neoplasm, nongynecologic mass (12 Dec 1998) |
| second parallel pelvic plane | The plane extending from the middle of the posterior surface of the pubic symphysis to the junction of the second and third sacral vertebrae, and laterally passing through the ischial bones over the middle of the acetabulum. Synonym: second parallel pelvic plane, wide plane. (05 Mar 2000) |
| disease, pelvic inflammatory | Despite its seeming lack of gender, this term is applied to women only. PID refers exclusively to ascending infection of the female genital tract above the cervix. (12 Dec 1998) |
| inferior fascia of pelvic diaphragm | The fascia that covers the inferior aspect of the levator ani and coccygeus muscles. Synonym: fascia diaphragmatis pelvis inferior, anal fascia. (05 Mar 2000) |
| inferior pelvic aperture | The lower opening of the true pelvis, bounded anteriorly by the pubic arch, laterally by the rami of the ischium and the sacrotuberous ligament on either side, and posteriorly by these ligaments and the tip of the coccyx. Synonym: apertura pelvis inferior, apertura pelvis minoris, fourth parallel pelvic plane, pelvic outlet, pelvic plane of outlet, plane of outlet. (05 Mar 2000) |
| obstetric conjugate of pelvic outlet | The conjugate of the pelvic outlet lengthened by the posterior displacement of the coccyx. (05 Mar 2000) |