Lecture 1

Question 1

What forms the bony pelvis?

Answer 1

Sacrum, coccyx and 2 hip bones

Question 2

What forms the pelvic inlet?

Answer 2

Sacral promontory, ilium, superior pubic ramus, pubic symphisis

Question 3

What forms the pelvic outlet?

Answer 3

Pubic symphysis. ischiopubic ramus, ischial tuberosities, sacrotuberous ligaments, coccyx

Question 4

Pelvic cavity lies

Answer 4

Between pelvic inlet and pelvic floor

Question 5

Anterior palpable pelvic landmarks

Answer 5

ASIS, iliac crests, pubic symphysis, pubic tubercle

Question 6

Posterior palpable pelvic landmarks

Answer 6

Iliac crests, PSIS, ischial tuberosities, coccyx, sacrum

Question 7

What foraminae do the sacrospinous and sacrotuberous ligaments form?

Answer 7

Greater and lesser sciatic foraminae

Question 8

Functions of sacrotuberous and sacrospinous ligaments?

Answer 8

Prevent sacrum from shifting superiorly when weight is suddenly transferred vertically through vertebral column (e.g. jumping)

Question 9

Obturator nerves and vessels pass through the obturator foramen via what?

Answer 9

The obturator canal

Question 10

What is moulding in labour?

Answer 10

Fetal skull bones can move over one and other to allow passage of baby

Question 11

What does the ‘station’ of the fetal head refer to?

Answer 11

Its position relative to the ischial spines. Negative number means superior to spines and positive means inferior.

Question 12

Mvmts of foetus as it descends pelvic cavity:

Answer 12

Head should rotate and be in a flexed position as it descends. At the pelvic outlet head should be in an extended OA position.