24 - Differences between Male and Female pelvis

BONY FRAME WORK	Massive and heart shaped	Less massive, rounded
PELVIC INLET	Deep and narrow	Shallow and wide
ILIUM	Less expanded, hence walls are not splayed	More expanded, hence walls are splayed
ILIAC FOSSA	Shallow	Deep
ASIS	Not widely separated	Widely separated
PUBIC ARCH	Narrow, V shaped, angle less than 70,less distance between ischia	Wide, U shaped, angle greater than 90, more distance ischia
ISCHIAL TUBEROSITY	Inverted	Everted
OBTURATOR FORAMEN	Ovoid with base upward	Triangular with apex forward
GREATER SCIATIC NOTCH	Narrow, deep, angle less than 90	Wide,shallow, angle greater than 90
PREAURICULAR SULCUS	Narrow,shallow, without marked edges	Broad,deep, in parous women
SACRUM	Long,narrow,has greater than 5 segments,well marked promontory	Wide,short,has 5 segments,promontory less marked
CURVE OF SACRUM	Equal over entire length, S-index less than 112	Straight in first 3 segments, the curve being confined to a point below the centre of 3rd sacral vertebra (J-shape)
ISCHIOPUBIC INDEX	73-94	91-150
ARTICULAR SURFACE OF SACRUM EXTENDS TO	2.5-3 Vertebral bodies	2-2.5 vertebral bodies
ACETABULUM	Wider and deeper	Narrow and shallow