BonesandLigaments
Plate332
Female pelvis/female pelvic
inlet: anterior view
Male pelvis/male pelvic
inlet: anterior view
Sacro-iliac joint
Sacral promontory
Diagonal conjugate (
~
12 cm)
Transverse (
~
13 cm)
Oblique (
~
12.5 cm)
Ischial spine
Iliopubic eminence
Pubic symphysis
Ischial tuberosity
Pubic arch
Diameters of
the pelvis
All measurements slightly shorter in
relation to body size than in female
Diagonal
conjugate
is only
diameter of
pelvic
inlet that
can be
measured
clinically
Pelvic inlet oriented more antero-
posteriorly than in female, where
it tends to be transversely oval
Pubic symphysis deeper (taller)
Pubic arch (subpubic angle) narrower
Ischial tuberosities less far apart
Iliac wings less flared
Pubic
symphysis
Transverse
diameter of pelvic
outlet (
~
11 cm)
Anteroposterior
diameter of
pelvic outlet
(varies 9.5–11.5 cm
because of mobility
of coccyx)
Tip of coccyx
Female pelvis/female pelvic outlet:
inferior view
Sacral
promontory
True conjugate
diameter
of pelvic inlet
(
~
11 cm)
Diagonal
conjugate
Ischial
tuberosity
Ischial spine
Anteroposterior
diameter of
pelvic outlet
(9.5–11.5 cm)
True conjugate
is
~
1.5 cm
shorter than
diagonal
conjugate
Transverse diameter is the widest distance of pelvic inlet
Plane of pelvic inlet
Plane of pelvic outlet
Pubic
symphysis
Female: sagittal section
SexDifferencesofPelvis:Measurements
See±also±
Plate 243
±
