MPS 102

Bones and diameters of the pelvis

Usual femaleUsually roomy

Usual maleFlattened, often by disease e.g.ricketts

Normal female pelvis

Innominate bone

Superior pubic ramus

Pelvic outlethttp://courses.missouristate.edu/emh420f/Unit_6/

Transverse 13 cm

Anteroposterior 11cm

Oblique 12 cm

Pelvic brim diameters

Sacrum

Symphysis Pubis

Diameters of pelvic cavityAll 12 cm

Diameters of pelvic outlet

Oblique 12cm

Transverse 11 cm

Anteroposterior 13cm

0°

15°

30°

60°

90° Pelvic Planes

Curve of Carus

Sacral promontory

Wing or ala of sacrum

Sacroiliac joint

Iliopectineal line

Iliopectineal eminence

Upper inner border of superior pubic ramus

Upper inner border of pubisSymphysis pubis

Pelvic outlet with fetal head.

http://www.mdevidence.com/imagesthumbs/2574T.jpg

ReferencesHenderson, C., MacDonald. S. (2006). Mayes’

textbook for midwives (13th Ed) London: Books for Midwives.

Varney, H., Kriebs, J. M., Gegor, C L. (2004) .Varney’s midwifery. Washington: Jones and Bartlett.