Anatomy - Lower Limb Flashcards

1
Q

Describe the origin and course of the sciatic nerve

A

Sacral plexus L4-S3 roots, join in the pelvis
Exits the pelvis under piriformis, through the greater sciatic notch
Travels under glute max, between greater trochanter and ischial tuberosity
Travels vertically down post thigh with hamstrings
Enters popliteal fossa, divides into tibial and common fibular nerves

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2
Q

Ligaments of the hip

A

Iliofemoral - AIIS to intertrochanteric line
Pubofemoral - obturator crest to merge with iliofemoral
Ischiofemoral - ischial part of acetabulum to greater trochanter

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3
Q

What does the sciatic nerve supply

A

Muscles of the posterior compartment of the thigh:

common fibular part - short head of biceps femoris

tibial part - long head of biceps femoris
semitendinosus
semimembranosus
hamstring portion of adductor magnus

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