Myotomes

Question 1

For EMG what muscle/s for L2-L4 & which nerve innervates

Answer 1

Quads & we use: Vastus Lateralis & Vastus Medialis, femoral nerve

Question 2

For EMG what muscle/s for L4-L5 & which nerve innervates?

Answer 2

Tibialis Anterior,
peroneal nerve

Question 3

For EMG what muscle/s for L5-S1 & which nerve innervates?

Answer 3

Gastrocnemius - Lateral Head
Tibial nerve

Question 4

For EMG what muscle/s for S1-S2 & which nerve innervates?

Answer 4

Gastrocnemius - Medial Head
Tibial nerve

Question 5

For EMG what muscle/s for C2-C4 & which nerve innervates?

Answer 5

Trapezius, more C4 a lil C3, more sensory than motor
CN XI

Question 6

For EMG what muscle/s for C1 & which nerve innervates?

Answer 6

Apparently none, but lmk if ya see one

Question 7

For EMG what muscle/s for C2-C3 & which nerve innervates?

Answer 7

Sternocleidomastoid
CN XI

Question 8

For EMG what muscle/s for C5-C6 & which nerve innervates?

Answer 8

Deltiod - axillary
Bicep - musculocutaneous

Question 9

For EMG what muscle/s for C6-C7 & which nerve innervates?

Answer 9

Triceps
Radial nerve

Question 10

For EMG what muscle/s for C8-T1 & which nerve innervates?

Answer 10

APB abductor pollicis brevis - median nerve
ADM abductor digiti minimi - ulnar nerve

Question 11

For EMG what muscle/s for S3-S5 & which nerve innervates?

Answer 11

Anal or urethral sphincter
Pedundal nerve

Question 12

Where is the sternocleidomastoid, what cervical level is it used to monitor & which nerve innervates it?

Answer 12

Back of ear to clavicle
C2-C3
CN XI

Question 13

Where is the gastrocnemius lateral head, what spinal level is it used to monitor & which nerve innervates it?

Answer 13

Outer calf
L5-S1
Tibial nerve

Question 14

For EMG what muscle/s for L1 & which nerve innervates?

Answer 14

Iliopsoas
Femoral Nerve & Lumbar Plexus

Question 16

For EMG on an L3-L5 surgery what muscles would you use for which levels, & which nerves innervate them

Answer 16

L2-L4
Vastus lateralis, tibial
Vastus medialis - tibial
L4-L5
Tibial Anterior - peroneal
L5-S1
Gastrocnemius lateral head

Question 17

For EMG for a surgery from L5-S1 which muscles would you use for which levels & list their associated nerves

Answer 17

L4-L5
Tibialis Anterior - peroneal
L5-S1
Gastrocnemius lat- tibial
Can go up to L2 if you add Vastus