Lower Peripheral Nerve Blocks

Question 1

What is formed by the Ventral Rami L1 - S5 (T12) and has Anterior & Posterior Divisions?

Answer 1

Lumbosacral Plexus

Question 2

What does the Lumbosacral Plexus Innervate?

Answer 2

Lower Abdomen & Lower Extremities

Muscles

Joints

Skin

Peritoneal Lining

Question 3

Where are the Iliohypogastric & Ilioinguinal Nerves

Answer 3

T12 - L1

Question 4

Where is the Genitofemoral Nerve?

Answer 4

L1 - L2

Question 5

Where is the Psoas & Iliacus Nerves?

Answer 5

L2 - L3

Question 6

Where is the Femoral Nerve?

Answer 6

Posterior L2 - L4

Question 7

Where is the Obturator Nerve?

Answer 7

Anterior L2 - L4

Question 8

Where is the Superior Gluteal Nerve?

Answer 8

L4 - S1

Question 9

Where is the Inferior Gluteal Nerve?

Answer 9

L5 - S2

Question 10

Where are the Sciatic & Tibial Nerves?

Answer 10

L4 - S3

Question 11

Where is the Common Peroneal Nerve?

Answer 11

L4 - S2

Question 12

Where is the Periformis Nerve?

Answer 12

S2

Question 13

What nerves are at L4 - S1?

Answer 13

Obturator Internus

Superior Gemellus

Inferior Gemellus

Quadratus Femoris

Question 14

Where does the Iliohypograstric Nerve travel?

Answer 14

Abdominal Wall to Symphysis Pubis

Question 15

What does the Iliohypogastric Nerve Innervate?

Answer 15

Parietal Peritoneum

Muscle

Inferior Abd. & Butt Skin

Question 16

Where does the Ilioinguinal & Genitofemoral Nerves travel?

Answer 16

Abdominal Wall

Thru Posterior Inguinal Canal & Ring

Stops at Anterior Scrotom or Labia Majora

Question 17

What does the Ilioinguinal Nerve Innervate?

Answer 17

Parietal Peritoneum

Muscle

Thigh & Genitalia Skin

Question 18

What does the Genitofemoral Nerve Innervate?

Answer 18

Skin covering Femoral Hiatus, Scrotum/Labia Majora

Question 19

Where is the Pudendal Nerve?

Answer 19

Anterior S2- S4

Question 20

Where does the Pudendal Nerve travel?

Answer 20

Pelvis thru Sciatic Foramen into Gluteal Region

Posterior to Ischial Spine into Perineum

Question 21

What does the Pudendal Nerve Innervate?

Answer 21

Muscle & Skin of Perineum

Question 22

Where is the Lateral Femoral Cutaneous Nerve?

Answer 22

Posterior L2 - L3

Question 23

Where does the Lateral Femoral Cutaneous Nerve Travel?

Answer 23

Down the back of Abdominal Wall and crosses Iliac Crest into Pelvis, then down to Inguinal Ligament & Anterior Iliac Spine

Question 24

What does the Lateral Femoral Cutaneous Nerve Innervate?

Answer 24

Lateral Thigh Skin at Knee Level

Question 25

Where is the Posterior Femoral Cutaneous Nerve?

Answer 25

Anterior & Posterior S1 - S3

Question 26

Where does the Posterior Femoral Cutaneous Nerve travel?

Answer 26

Pelvis to Gluteal Region to back of Thigh

Question 27

What does the Posterior Femoral Cutaneous Nerve Innervate?

Answer 27

Back of Thigh Skin @ Hip to Mid Calf

Question 28

Where does the Obturator Nerve travel?

Answer 28

Middle of Thigh

Question 29

What does the Obturator Nerve Innervate?

Answer 29

Thigh Muscles Hip Movement Middle Thigh Skin

Question 30

Where does the Femoral Nerve travel?

Answer 30

Pelvis --\> Inguinal Ligament --\> Anterior Thigh --\> Splits into Anterior & Posterior Branches Posterior Branch has Saphenous Nerve

Question 31

What does NAVEL stand for?

Answer 31

Nerve, Artery, Vein, Empty Space, Ligament

Question 32

What does the Femoral Nerve Innervate?

Answer 32

Rectus Femoris Vastus Lateralis Vastus Intermedius Vastus Medialis Sartorious Anterior Thigh Skin

Question 33

Where is the Saphenous Nerve?"

Answer 33

Posterior Branch of Femoral Nerve

Question 34

Where does the Saphenous Nerve Travel?

Answer 34

Sartorius muscle --\> Tibia --\> Skin Accompanied by Saphenous Vein

Question 35

What does the Saphenous Nerve Innervate?

Answer 35

Middle of Leg from Knee to Foot Arch Sartorious Muscle across thigh Patellar Twitch/Snap

Question 36

Which two nerves form the Sciatic Nerve as well as the Sural Nerve?

Answer 36

Tibial Nerve & Common Peroneal Nerve

Question 37

What is the Largest and Longest Nerve?

Answer 37

Sciatic Nerve

Question 38

Where does the Sciatic Nerve travel?

Answer 38

Butt --\> Obturator Internus --\> Ischial Tuberosity --\> Back of Thigh

Question 39

What does the Sciatic Nerve do?

Answer 39

Hip Extension & Knee Flexion

Question 40

Where does the Tibial Nerve travel?

Answer 40

Popliteal fossa --\> Back of Leg --\> Tibial & Fibial Heads --\> Medial Malleolus --\> Foot

Question 41

Where does the Common Peroneal Nerve travel?

Answer 41

Popliteal --\> Biceps Femoris --\> Fibula --\> Divides into Superfical & Deep Branches

Question 42

Where does the Superficial Branch of the Common Peroneal Nerve travel?

Answer 42

Side of Leg to the Side & Top of foot

Question 43

Where does the Deep Branch of the Common Peroneal Nerve travel?

Answer 43

Front of Leg --\> Ankle --\> Skin b/t Hallux & Second Toe

Question 44

How does the Sural Nerve travel?

Answer 44

W/ Saphenous Nerve to Lateral Malleolus to the Foot

Question 45

What does the Sural Nerve Innervate?

Answer 45

Back Sole of Foot Heel Achilles Tendon

Question 46

What does Tibial Nerve Stimulation do to the foot?

Answer 46

Plantarflexion & Inversion

Question 47

What does Superficial Peroneal Nerve Stimulation do to the Foot?

Answer 47

Abduction & Eversion

Question 48

What does Deep Peroneal Nerve Stimulation do to the Foot?

Answer 48

Dorsiflexion

Question 49

When is a Femoral Nerve Block Indicated?

Answer 49

Front of thigh Middle of Leg Below Knee Knee Arthroscopy

Question 50

What are Contraindications to Femoral Nerve Blocks?

Answer 50

Prior Ilioinguinal Surgery - Vascular Graft, Kidney Transplant Big Inguinal Lymph Nodes/Tumor Patient Refuse Local Infection Coagulopathy Neuropathy

Question 51

What are Indications for a Sciatic Nerve Block?

Answer 51

Lower Limb Surgery Usually combined w/ Femoral Blocks

Question 52

What are Indications for a Popliteal Block?

Answer 52

Lower Leg Surgery - especially foot & ankle May need Saphenous Coverage

Question 53

What are Indications for a Saphenous Block?

Answer 53

Sphenous Vein Stripping/Harvest Supplementation for Foot/Ankle Surgery Pain Control for Knee Surgery

Question 54

What are Indications for an Ankle Block?

Answer 54

Foot Surgery

Question 55

What are the Landmarks for Ankle Blocks?

Answer 55

Medial & Lateral Malleoli Achilles Tendon Extensor Longus Tendon Posterior Tibial Dorsalis Pedis Sustentaculum Tali