How do you find the obstetrical conjugate?

How do you find the obstetrical conjugate?

Antero -posterior diameters:

  1. Anatomical antero-posterior diameter (true conjugate) = 11cm. from the tip of the sacral promontory to the upper border of the symphysis pubis.
  2. Obstetric conjugate = 10.5 cm.
  3. Diagonal conjugate = 12.5 cm.
  4. External conjugate = 20 cm.

What is the diameter of the pelvis?


Name Description Average measurement in female
Anatomical conjugate Extends from the pubic symphysis to the promontory; about 120 mm.
Diagonal conjugate Extends from lower margin of the pubic symphysis to the sacral promontory; about 130 mm.

Where is the pelvic brim located?

Anatomical terms of bone The pelvic brim is the edge of the pelvic inlet. It is an approximately Mickey Mouse head-shaped line passing through the prominence of the sacrum, the arcuate and pectineal lines, and the upper margin of the pubic symphysis.

Is the process of measuring the dimensions of the pelvis?

Pelvimetry is the measurement of the female pelvis.

Are pelvic and pelvis the same?

The pelvis (plural pelves or pelvises) is either the lower part of the trunk of the human body between the abdomen and the thighs (sometimes also called pelvic region of the trunk) or the skeleton embedded in it (sometimes also called bony pelvis, or pelvic skeleton).

What is the true conjugate diameter of the pelvic inlet?

Synonym: conjugata vera; true conjugate diameter of pelvic inlet The distance between the tip of the coccyx and the lower edge of the symphysis pubis. The distance between the two gonia. The gonion is the anthropometric point at the most inferior, posterior, and lateral points on the angle of the mandible.

How big is the obstetric and diagonal conjugate?

Normally the obstetrical conjugate measures 10 cm or more. If the diagonal conjugate is greater than 11.5 cm, it is justifiable to assume that the pelvic inlet is of adequate size for vaginal delivery of a normal-sized fetus.

How big is the posterior sagittal part of the pelvis?

Posterior sagittal diameter: 7.5-10 cm from the tip of the sacrum to the centre of the bituberous diameter. Pelvic Axes Anatomical axis (curve of Carus) It is an imaginary line joining the centre points of the planes of the inlet, cavity and outlet. It is C shaped with the concavity directed forwards. It has no obstetric importance. Obstetric axis

Which is the best definition of the conjugate diameter?

Conjugate (2). The distance from the upper part of the symphysis pubis to the most distant part of the brim of the pelvis. The anteroposterior diameter of the pelvic inlet measured externally; the distance from the skin over the upper part of the symphysis pubis to the skin over a point corresponding to the sacral promontory.