Lower Extremity Bones

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created 5 years ago by nicolefraserr
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updated 5 years ago by nicolefraserr
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1

Ilium

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2

Ischium

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3

Pubis

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4

Sacrum

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5

Coccyx

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6

location of the ilium

largest and uppermost portion

7

location of the ischium

lowest portion

8

location of the pubis

anterior portion

9

Acetabulum is formed by what

all 3 bones of the innominate

10

Articulation site for Acetabulum

Between femur and coxa

-coxofemoral joint

11

what forms the obturator foramen

ischium & pubis

12

Largest foremen in body

Obturator forament

13

Acetabulum

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Obturator Foramen

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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

16

Anterior inferior iliac spine (AIIS)

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Anterior superior iliac spine (ASIS)

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Posterior inferior iliac spine (PIIS)

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Posterior superior iliac spine (PSIS)

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Iliac crest

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Iliac fossa

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Greater Sciatic notch

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23

Landmarks on the Ischium

-Ischial tuberosity

-Ischial spine

-Ramus of the ischium

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Ischial tuberosity

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Ischial Spine

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Ramus of the ischium

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Landmarks on the Pubis

-Superior ramus of pubis

-Inferior ramus of pubis

-Pubic tubercle

-Body of pubis

28

Superior ramus of pubis

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Inferior ramus of pubis

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Pubic tubercle

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Body of pubis

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32

Sciatic Nerve properties

-Emerges from lumbosacral plexus (L4-S3)

-Travels through greater sciatic foramen

33

What nerves does the sciatic nerve form

Tibial nerve

common peroneal nerve

34

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

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Posterior superior iliac spine (PSIS)

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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

37

Pelvic Brim

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Pelvic Arch

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39

Pelvic inlet

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