Summary obgyn- anatomy of the female pelvis royal college of surgeons ireland

OG 2.2
Anatomy of the Female Pelvis


OG 2.2 ANATOMY OF THE FEMALE PELVIS

Class Senior Cycle 1
Course Obstetrics and Gynaecology
Code SC1 Obs
Title Anatomy of the female pelvis
Date January 2015
Department of Obstetrics & Gynaecology
Department of Anatomy
Royal College of Surgeons in Ireland

, Knowledge and Skills Objectives
• Understand the anatomy and shape of the normal female pelvis
and its measurements
• Understand the anatomy of the pelvic floor and the perineum
• Describe the female external genitalia, internal organs and
relative ligaments, nerves and blood vessels
• Know the difference between episiotomy and 1st, 2nd, 3rd and 4th
degree perineal tear
• During the rotation, you should observe 5 cases of perineal repair
in the delivery suite including episiotomies
• Be able to describe the findings of a pelvic examination – size,
position, mobility consistency of the uterus, adnexal findings +/-
any masses

Departments of Anatomy, Obstetrics &
Gynaecology, RCSI

, The passageway for birth- the pelvis

• Pelvic inlet - the pelvic brim, the entrance into the lesser or
true pelvis. Bound by the pubis, iliopectineal lines, alae and
promontory of sacrum

• Pelvic outlet - extends from lower border of pubic symphysis
to the tip of the coccyx. Bound by the pubic arch, sacrosciatic
ligaments, ischial tuberosities and tip of coccyx

• Pubic symphysis - secondary cartilaginous joint



Departments of Anatomy, Obstetrics &
Gynaecology, RCSI

, Obstetric pelvic measurements

Inlet
• Transverse > AP
Mid cavity
• almost round
• Ischial spines palpable
vaginally used to assess
level of baby’s head =
station

Outlet
• AP > transverse
Departments of Anatomy, Obstetrics &
Gynaecology, RCSI