Lumbosacral Plexus, Pelvis, Hip

Question 1

Sacrotuberous Ligaments

Answer 1

-From sciatic notch of ilium and sacrum to the ischial tuberosity
-Forms greater sciatic foramen

Question 2

Sacrospinous Ligaments

Answer 2

-From sacrum to ischial spine
-Forms lesser sciatic foramen

Question 3

Greater Sciatic Foramen

Answer 3

Passageway for structures entering or leaving pelvis

Question 4

Lesser Sciatic Foramen

Answer 4

Passageway for structures entering or leaving perineum

Question 5

Posterior Sacroiliac Ligament

Answer 5

Continuous inferiorly with the sacrotuberous ligament

Question 6

What runs under inguinal ligament?

Answer 6

Femoral artery and vein

Question 7

Femoral artery and vein parent structure

Answer 7

external iliac artery

Question 8

Femoral triangle borders

Answer 8

Sartorius, adductor longus, inguinal ligament

Question 9

Contents of femoral triangle

Answer 9

Femoral nerve, artery, and vein (lateral to medial)

Question 10

Adductor hiatus

Answer 10

-Vessels go behind longus, thru magnus, out thru hiatus
-No nerve lying directly on bone!

Question 11

Lumbosacral plexus nerve levels

Answer 11

L5-S3

Question 12

5 major nerves of lumbosacral plexus and levels

Answer 12

-Femoral (L2-L4)
-Obturator (L2-L4)
-Sciatic (L4-S3)
-Superior Gluteal (L4-S1)
Inferior Gluteal (L5-S2)

Question 13

What do major nerves of lumbosacral plexus help with?

Answer 13

Ambulation