anatomy of bony pelvis Flashcards
spinal cord ends at
L2
Dura ends ta
S2
bony pelvis comprises of
2 innominate bones
Sacrum
Coccyx
Innominate bones consists of
Ilium
Pubis
Ischium
(IPI down)
ramus meaning
an arm or branch of bone
part which you sit on
ischial tuberosity
inguinal ligament attachaments
ASIS
pubic tubercle
Ligaments that form the lesser and greater sciatic foramen
sacrotuberous
sacrospinous
(these relax during later pregnancy)
pelvic inlet formed by
sacral promontory
ilium
superior pubic ramus
pubic symphysis
functions of bony pelvis
support of upper body (sitting + standing)
transfer of weight from spine to femurs
Passage for childbirth
what is different about female pelvis and ale pelvis
The AP and transverse diameters of the pelvic inlet and outlet are larger than the males
And the subpubic arch is larger
Female pelvic cavity is shallower
what is longer the occipitalfrontal diameter or the biparietal diameter?
occipitalfrontal diameter
foetus should enter pelvic cavity facing what direction
transverse (right or left)
what does ‘station’ refer to?
position of head in relation to ischial spine
Negative number = superior
positive number = inferior
Baby on leaving should rotate into what position?
Occipito-anterior (OA) position
+ extension of head on the neck