Males versus Females Pelvis'

Question 1

What are the 2 main principal sources between male + female pelvis’?

Answer 1

1. The female pelvis’ has to transmit a baby during childbirth leading to a widening in the pelvic inlet + outlet.
2. Males are usually heavier + have larger muscles. Any structure that is weight-bearing will be larger in males.

Question 2

What are 5 differences between male and female pevlis’?

Answer 2

1. The female pubic angle is wider + more U-shaped. Males are acutely angled + straighter.
2. Female pubic body + Superior pubic ramus are wider. Males have a larger acetabulum instead.
3. Greater sciatic notch is wider in females.
4. Female pelvic inlet is round. Males are more heart-shaped. Due to male sacral promontory juts further forward.
5. Males have a larger auricular surface on the sacrum than females.

Question 3

What is the Obstetrical Dilemma?

Answer 3

• A hypothesis outlining how opposing evolutionary pressures resulted in a narrower pelvis to better help walking
• But for women a wider pelvis to allow birth
• Making them less able to walk or run compared to men.