Ilium

Ischium

Pubis

Sacrum

Coccyx

largest and uppermost portion

location of the ilium

lowest portion

location of the ischium

anterior portion

location of the pubis

all 3 bones of the innominate

Acetabulum is formed by what

Between femur and coxa

-coxofemoral joint

Articulation site for Acetabulum

ischium & pubis

what forms the obturator foramen

Obturator forament

Largest foremen in body

Acetabulum

Obturator Foramen

-Anterior inferior iliac spine (AIIS)

-Anterior superior iliac spine (ASIS)

-Posterior inferior iliac spine (PIIS)

-Posterior superior iliac spine (PSIS)

-Iliac crest

-Iliac fossa

-Greater Sciatic notch

Landmarks on the Ilium

Anterior inferior iliac spine (AIIS)

Anterior superior iliac spine (ASIS)

Posterior inferior iliac spine (PIIS)

Posterior superior iliac spine (PSIS)

Iliac crest

Iliac fossa

Greater Sciatic notch

-Ischial tuberosity

-Ischial spine

-Ramus of the ischium

Landmarks on the Ischium

Ischial tuberosity

Ischial Spine

Ramus of the ischium

-Superior ramus of pubis

-Inferior ramus of pubis

-Pubic tubercle

-Body of pubis

Landmarks on the Pubis

Superior ramus of pubis

Inferior ramus of pubis

Pubic tubercle

Body of pubis

-Emerges from lumbosacral plexus (L4-S3)

-Travels through greater sciatic foramen

Sciatic Nerve properties

Tibial nerve

common peroneal nerve

What nerves does the sciatic nerve form

-Provides support to the body's weight (trunk/core)

-Provides articulation sites LE limbs

-Provides attachment sites for LE musculature

-Provides protection for lower quadrant organs: (bladder, reproductive organs, distal large intestines

*LE = lower extremity

Pelvic Girdle Functions

Posterior superior iliac spine (PSIS)

-Female has a larger pelvic arch

-Female has larger, more round pelvic brim

-Female has smaller more oval/triangular obturator foramen

Gender Differences in the pelvic girdle

Pelvic Brim

Pelvic Arch

Pelvic inlet