Male vs Female Pelvis

Overview

This lecture compares the anatomical differences between the male and female pelvis (pelvic girdle), focusing on features important for function and identification.

Pelvic Shape Differences

• Male iliac crests are higher and more narrowly set; female ilia are more relaxed and wider apart, leading to broader hips.
• The male pelvic inlet is more circular and narrower than the female's, which is wider.
• The male pelvic outlet is very small and narrow; the female pelvic outlet is much larger to accommodate childbirth.

Pubic Angle Comparison

• The angle where the pubic rami meet is more acute in males.
• In females, this pubic angle approaches 90°, contributing to the wider pelvic structure.

Key Terms & Definitions

• Pelvic Girdle — the ring of bones connecting the trunk to the legs, includes the ilium, ischium, and pubis.
• Iliac Crest — the upper curved edge of the ilium, part of the hip bone.
• Pelvic Inlet — the upper opening of the true pelvis, bordered by the pelvic brim.
• Pelvic Outlet — the lower opening of the pelvis, important for childbirth.
• Pubic Rami — the branches of the pubic bone that meet at the pubic symphysis.

Action Items / Next Steps

• Review diagrams of male and female pelvis for visual comparison.
• Memorize key anatomical differences for exam.