Lecture 1 - Osteology of Pelvis

Question 1

What are the borders of the superior pelvic inlet?

L1 S3-4 LO1

Answer 1

Pelvic brim:

• sacral promontory
• arcuate lines
• iliopectineal lines of pubis

Question 2

What are the borders of the inferior pelvic outlet?

L1 S3-4 LO1

Answer 2

• coccyx
• sacrotuberous ligaments
• ischial tuberosities
• ischiopubic rami
• pubic symphysis

Question 3

Differentiate between the false pelvis and true pelvis.

L1 S5 LO1

Answer 3

False pelvis:
-extends above the pelvic brim

True Pelvis:
-does not extend above the pelvic brim

Question 4

What bones form the pelvis?

L1 S7;12 LO2

Answer 4

Ilium

Ischium

Pubis

Question 5

How does a female pelvis vary from a male pelvis? (9)

L1 S23 LO3

Answer 5

• thinner
• lighter
• shallow greater pelvis
• wide and shallow lesser pelvis
• gyencoid pelvic inlet (vs. android pelvic inlet)
• large pelvic outlet
• wide pubic arch
• oval-shaped obturator foramen
• small acetabulum