pelvic plane of least dimensions
Definition: 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(s): midplane, plane of least pelvic dimensions, plane of midpelvis, third parallel pelvic plane
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Examples: glitazone, GI cocktail, etc.

