midpelvis

English edit

From mid- +‎ pelvis.

midpelvis (plural midpelvises)

(anatomy) A pelvic plane defined by the ischial spines, the lower edge of the pubic symphysis, and the boundary of the fourth and fifth sacral vertebra.
- 1963 May 1, David N. Danforth, Averon H. Ellis, “Midforceps delivery—a vanishing art?”, in American Journal of Obstetrics and Gynecology, volume 86, number 1, →DOI, page 32:
  At the midpelvis, transverse narrowing may result either from convergent sidewalls or prominent spines or both.