8) Pelvic Osteology Flashcards Preview

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Flashcards in 8) Pelvic Osteology Deck (13)
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1
Q

What is the bony pelvis made up from?

A

2 innominate (hip bones), sacrum and coccyx

2
Q

What is the linea terminalis?

A

Define true and false pelvis

3
Q

What is the sacral promontory?

A

Anterior superior edge of 1st sacral vertebrae

4
Q

What are the features of the gynecoid pelvis?

A
Round inlet
Non-prominent ischial spines 
Straight side wall 
Well curved sacrum 
Well rounded greater sciatic notch
5
Q

What is pelvic inlet defined by?

A

Wings of iliac bones, sacrum (pos) and pubic symphysis (ant)

6
Q

What is important to consider with reference to the pelvic outlet?

A

Distance between ischial tuberosities

7
Q

Which part of pelvis has obstetric relevance?

A

Lesser (true) pelvis

8
Q

What surrounds the lesser pelvis?

A

Ischial spines, lower sacrum and pubic symphysis

9
Q

What is clinically important to consider with reference to the pelvic inlet?

A

Antero-posterior diameter

10
Q

What is clinically important to consider with reference to the mid pelvis?

A

Straight side walls and distance between ischial spines

11
Q

Where is the obstetric conjugate measured between?

A

Sacral promontory to midpoint of pubic symphysis (minimum diameter)

12
Q

What conjugate is used in practice and where does it measure between?

A

Diagonal, inferior border of pubic symphysis to sacral promontory (measured through vagina)

13
Q

Give examples of difference between the male and females pelvis (4 differences):

A

Circular inlet (females) v heart shaped inlet (males)
Males have prominent ischial spines
Sub-pubic angle (between inferior rami of pubis) is narrow in males and wide females
Well rounded greater sciatic notch in females