THE BONY PELVIS Flashcards
which bones make up the bony pelvis?
2 hip bones
sacrum
coccyx
what is each hip bone a fusion of?
ilium
ischium
pubis
where does the fusion of the ilium, ischium and pubis take place?
acetabulum
takes place during embryonic development, however complete ossification takes place during adulthood.
what is the angle called that is located inferior to the pubic arch?
sub-pubic angle
where does the inguinal ligament attach?
between the ASIS and the pubic tubercle
where are the ischial spines palpable on vaginal examination?
4 o’clock and 8 o’clock positions
what is the main function of the axial skeleton?
to transfer weight from the axial skeleton to the hip bones
requires strength and stability - little movement occurs at SI joints
what does ‘moulding’ mean in childbirth?
the movement of one bone over another to allow the foetal head to pass through the pelvis during labour
how does the pelvis differ between males and females?
the female pelvic bones are less dense
the female pelvic arch is wider
the female pelvis is deeper and wider
which nerves and vessels may be damaged as a result of pelvic trauma?
obturator nerve
pudendal nerve
obturator artery
which bony landmarks of the pelvis are palpable?
Iliac crest
Anterior superior iliac spine (ASIS)
Posterior superior iliac spine (PSIS).
which diameter of the feral skull is the largest?
biparietal
describe where a pudendal nerve block needle is inserted vaginally
ischael spine
which maternal nerve may be injured during delivery?
pudendal
which fetal nerve may be injured during delivery?
facial nerve
