Wednesday, February 24, 2010

24 - Differences between Male and Female pelvis


BONY FRAME
WORK
Massive and heart shapedLess massive, rounded
PELVIC INLETDeep and narrowShallow and wide
ILIUMLess expanded, hence walls
are not splayed
More expanded, hence
walls are splayed
ILIAC FOSSAShallowDeep
ASISNot widely separatedWidely separated
PUBIC ARCHNarrow, V shaped, angle
less than 70,less distance
between ischia
Wide, U shaped,
angle greater than 90,
more distance ischia
ISCHIAL
TUBEROSITY
InvertedEverted
OBTURATOR
FORAMEN
Ovoid with base upwardTriangular 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
SACRUMLong,narrow,has greater
than 5 segments,well
marked promontory
Wide,short,has 5
segments,promontory
less marked
CURVE OF SACRUMEqual 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 INDEX73-9491-150
ARTICULAR SURFACE
OF SACRUM
EXTENDS TO
2.5-3 Vertebral bodies2-2.5 vertebral bodies
ACETABULUMWider and deeperNarrow and shallow

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