Lower Extremity Blocks

Question 1

The lumbar plexus is formed from the --- nerve roots and (____). formed in the ______ _____ muscle and behind the ____ ______ muscle.

Answer 1

1,2,3,4
ventral rami
quadratus lumborum
psoas major

Question 2

Lateral Femoral Cutaneous: formed from the __ and __ lumbar nerves. Provides sensory innervation to the ____ aspect of the _____.

Answer 2

2nd and 3rd
lateral aspect of thigh

Question 3

Lateral Femoral Cutaneous: emerges from the ____ border of the psoas major at its ___

Answer 3

lateral
midpoint

Question 4

Lateral Femoral Cutaneous: NERVE TRANSVERSES THE ____ MUSCLE OBLIQUELY TOWARD THE ANTERIOR ILIAC SPINE
NERVE PASSES UNDER THE _____ BORDER OF THE _______LIGAMENT

Answer 4

ILIAC
LATERAL
INGUINAL

Question 5

OBTURATOR: NERVE ARISES FROM THE ………LUMBAR NERVES AS AN EXTENSION OF THE LUMBAR PLEXUS

Answer 5

2ND, 3RD, AND 4TH

Question 6

THIS NERVE IS FREQUENTLY INJURED WHEN PATIENT UNDERGOs EXTENSIVE PELVIC SURGERY

Answer 6

obturator

Question 7

EMERGES FROM THE MEDIAL BORDER OF THE PSOAS MAJOR AT THE LEVEL OF THE SACROILIAC JOINT

Answer 7

OBTURATOR

Question 8

OBTURATOR: COVERED BY THE EXTERNAL …..

Answer 8

ILIAC ARTERY AND VEIN

Question 9

NERVE PASSES IN THE PELVIS MINOR AND RUNS ANTERIOINFERIORLY TO THE OBTURATOR CANAL, WHICH IT TRAVERSES NEAR THE OBTURATOR VESSELS

Answer 9

OBTURATOR

Question 10

BRANCHES OF FEMORAL NERVE

Answer 10

POSTERIOR AND ANTERIOR

Question 11

INNERVATION OF THE POSTERIOR BRANCH OF THE FEMORAL NERVE

Answer 11

THE QUADRICEPS MUSCLES, KNEE JOINT, MEDIAL LIGAMENT

Question 12

INNERVATION OF THE ANTERIOR BRANCH OF THE FEMORAL NERVE

Answer 12

ANTERIOR SURFACE OF THE THIGH AND SARTORIUS MUSCLE

Question 13

ORIGIN OF THE SAPHENOUS NERVE?

Answer 13

FEMORAL NERVE

Question 14

THE ILIACA FASCIA ENCAPSULATES THE FEMORAL NERVE _______, THE PSOAS FASCIA _______, AND THE TRANSVERSE FASCIAL ______.

Answer 14

LATERALLY
MEDIALLY
ANTERIORLY

Question 15

PSOAS COMPARTMENT BLOCK: BLOCKS THE ? AND CONFIMED BY STIMULATION OF THE ______ MUSCLE

Answer 15

LUMBAR PLEXUS
QUADRICEPS

Question 16

PSOAS COMPARTMENT BLOCK: Pt. should remain in the _____ position after injection to allow for spread of local.
HOW MUCH LOCAL?

Answer 16

lateral
30-40 ml

Question 17

PSOAS COMPARTMENT BLOCK: landmarks

Answer 17

-interspinal line
-posterior superior iliac spine
-iliac crest
-5cm line drawn perpendicularly and laterally toward side blocked

Question 18

Femoral nerve: saphenous nerve arises from the ______ branch.

Answer 18

posterior

Question 19

FNB: when combined with the _____ nerve block it will provide complete anesthetic coverage of the leg

Answer 19

sciatic

Question 20

Sacral Plexus: SIPPS

Answer 20

-superior gluteal
-inferior gluteal
-posterior cutaneous
-pudendal
-sciatic

Question 21

Sciatic- arises from __-__ and divides into 2 branches at the popliteal fossa ___n. and ___ n.

Answer 21

L4-S3
tibial n. and common peroneal n.

Question 22

Tibial- arises from the ___ nerve (anterior branches of __-__).

gives rise to 2 terminal branches: __-__

Answer 22

sacral
L4-S3
posterior tibial n.
sural n.

Question 23

Common Perineal (fibular n.)- arises from the _____ nerve (__-__).

Gives rise to 3 terminal branches
___,___,___.

Answer 23

sacral n.
L4-S2
Deep peroneal
Superficial peroneal
Sural

Question 24

Motor function: Femoral

Answer 24

hip –> flexion and rotation (lateral)
knee –> extension and flexion (minor contribution by the sartorius muscle)

Question 25

Motor function: Obturator

Answer 25

Hip --> ADDuction + flexion +extension

Question 26

Motor function: Lateral femoral cutaneous

Answer 26

NONE

Question 27

Motor function: pudendal

Answer 27

anal sphincter tone

Question 28

Motor function: posterior femoral cutaneous

Answer 28

NONE

Question 29

Motor function: Sciatic

Answer 29

Hip --> extension Knee --> flexion

Question 30

Motor function: Tibial

Answer 30

Toe --> ABduction + ADDuction + extension and flexion Ankle --> plantar flexion (major) + inversion (minor)

Question 31

Motor function: superficial peroneal

Answer 31

Ankle --> eversion (major) + plantar flexion (minor)

Question 32

Motor function: Deep peroneal

Answer 32

Ankle --> dorsiflexion + inversion (major) + Eversion (minor)

Question 33

Motor function: Sural

Answer 33

NONE

Question 34

The hip joint is innervated by the ____,____, and _____ nerves.

Answer 34

femoral, obturator, and sciatic

Question 35

The PENG block is indicated for __fractures or __

Answer 35

hip fractures or hip arthroplasty

Question 36

The fascial iliaca block targets what 3 nerves? indications: local volume:

Answer 36

femoral, obturator, and lateral femoral cutaneous nerve. femur, quad, knee, acute pain for hip fractures 40 mL local

Question 37

Indications for Adductor Canal block: local volume:

Answer 37

ACL repair MCL repair patellar fracture vein stripping and harvesting supplementation to a sciatic block for foot/ankle surgery 15-20 mL

Question 38

Pop block: bifurcation of ___ n. into the _____n. and ____n.

Answer 38

sciatic common tibial nerve common peroneal nerve

Question 39

Pop block: muscle anatomy landmark

Answer 39

biceps femoris, semitendinosus and semimembranosus muscles

Question 40

Memonic TIPPED

Answer 40

Tibial Inversion Plantar Flexion + Peroneal Eversion Dorsiflexion

Question 41

Dermatomes: L2

Answer 41

medial thigh (upper)

Question 42

Dermatomes: L3

Answer 42

medial thigh (lower)

Question 43

Dermatomes: L4

Answer 43

lateral thigh + anterior knee

Question 44

Dermatomes: L5

Answer 44

lateral lower leg + top of foot

Question 45

Dermatomes: S1

Answer 45

posterior leg (more lateral)

Question 46

Dermatomes: S2