Ilium

Ischium

Pubis

Sacrum

Coccyx

location of the ilium

largest and uppermost portion

location of the ischium

lowest portion

location of the pubis

anterior portion

Acetabulum is formed by what

all 3 bones of the innominate

Articulation site for Acetabulum

Between femur and coxa

-coxofemoral joint

what forms the obturator foramen

ischium & pubis

Largest foremen in body

Obturator forament

Acetabulum

Obturator Foramen

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

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 Ischium

-Ischial tuberosity

-Ischial spine

-Ramus of the ischium

Ischial tuberosity

Ischial Spine

Ramus of the ischium

Landmarks on the Pubis

-Superior ramus of pubis

-Inferior ramus of pubis

-Pubic tubercle

-Body of pubis

Superior ramus of pubis

Inferior ramus of pubis

Pubic tubercle

Body of pubis

Sciatic Nerve properties

-Emerges from lumbosacral plexus (L4-S3)

-Travels through greater sciatic foramen

What nerves does the sciatic nerve form

Tibial nerve

common peroneal nerve

Pelvic Girdle Functions

-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

Posterior superior iliac spine (PSIS)

Gender Differences in the pelvic girdle

-Female has a larger pelvic arch

-Female has larger, more round pelvic brim

-Female has smaller more oval/triangular obturator foramen

Pelvic Brim

Pelvic Arch

Pelvic inlet