LE Innervation

Question 1

Extensor digitorum brevis (EDB) innervation

Answer 1

L4-S1 (mostly L5)
Lumbosacral plexus
Sciatic nerve
Common peroneal nerve
Deep peroneal nerve

Question 2

Extensor hallucis longus (EHL) innervation

Answer 2

L4-S1 (mostly L5)
Lumbosacral plexus
Sciatic nerve
Common peroneal nerve
Deep peroneal nerve

Question 3

Extensor digitorum Longus (EDL) innervation

Answer 3

L4-L5 (mostly L5)
Lumbosacral plexus
Sciatic nerve
Common peroneal nerve
Deep peroneal nerve

Question 4

Tibialis anterior (TA) innervation

Answer 4

L4-L5
Lumbosacral plexus
Sciatic nerve
Common peroneal nerve
Deep peroneal nerve

Question 5

Peroneus Longus innervation

Answer 5

L5-S1 (mostly L5)
Lumbosacral plexus
Sciatic nerve
Common peroneal nerve
Superficial peroneal nerve

Superficial peroneal does more than just sensory

Question 6

Abductor hallucis brevis (AHB) innervation

Answer 6

S1-S2 (mostly S1)
Lumbosacral plexus
Sciatic nerve
Tibial nerve
Medial plantar nerve

Question 7

Flexor Hallucis brevis (FHB) innervation

Answer 7

S1-S2 (mostly S1)
Lumbosacral plexus
Sciatic nerve
Tibial nerve
Medial plantar nerve

Question 8

Abductor Digiti Quinti Pedis innervation

Answer 8

S1-S2 (mostly S1)
Lumbosacral plexus
Sciatic nerve
Tibial Nerve
Lateral plantar nerve

Question 9

Gastroc medial head innervation

Answer 9

S1-S2 (mostly S1)
Lumbosacral plexus
Sciatic nerve
Tibial nerve

Question 10

Soleus innervation

Answer 10

S1-S2 (mostly S1)
Lumbosacral plexus
Sciatic nerve
Tibial nerve

Question 11

Tibialis posterior innervation

Answer 11

L5-S1 (mostly L5)
Lumbosacral plexus
Sciatic nerve
Tibial nerve

Question 12

Flexor digitorum longus innervation

Answer 12

L5-S1 (mostly L5)
Lumbosacral plexus
Sciatic nerve
Tibial nerve

Question 13

Biceps femoris short head innervation

Answer 13

L5-S1 (mostly S1)
Lumbosacral plexus
Sciatic nerve (peroneal division)

Question 14

Biceps femoris long head innervation

Answer 14

L5-S1 (mostly S1)
Lumbosacral plexus
Sciatic nerve (tibial division)

Question 15

Semimembranosus innervation

Answer 15

L4-S1 (mostly L5)
Lumbosacral plexus
Sciatic nerve (tibial division)

Question 16

Semitendinosus innervation

Answer 16

L4-S1 (mostly L5)
Lumbosacral plexus
Sciatic nerve (tibial division)

Question 17

Gracilis innervation

Answer 17

L2-L4 (mostly L3)
Lumbar plexus
Obturator nerve

Question 18

Adductor longus innervation

Answer 18

L2-L4 (mostly L3)
Lumbar plexus
Obturator nerve

Question 19

Adductor Magnus innervation

Answer 19

L2-L4 (mostly L3)
Lumbar plexus
Obturator nerve

Question 20

Vastus lateralis innervation

Answer 20

L2-L4 (mostly L3/L4)
Lumbar plexus
Femoral nerve

Question 21

Vastus medialis innervation

Answer 21

L2-L4 (mostly L3/L4)
Lumbar plexus
Femoral nerve

Question 22

Rectus femoris innervation

Answer 22

L2-L4 (mostly L2/L3)
Lumbar plexus
Femoral nerve

Question 23

Iliacus innervation

Answer 23

L2-L4 (mostly L2/L3)
Lumbar plexus
Femoral nerve

Question 24

Gluteus medius innervation

Answer 24

L4-S1 (mostly L5)
Lumbosacral plexus
Superior gluteal nerve

Question 25

Tensor fasciae Latae innervation

Answer 25

L4-S1 (mostly L5)
Lumbosacral plexus
Superior gluteal nerve

Question 26

Gluteus maximus innervation

Answer 26

L5-S2 (mostly S1)
Lumbosacral plexus
Inferior gluteal nerve

Question 27

Lower extremity root screen (radiculopathy):

Answer 27

Vastus lateralis or medialis ( L3,L4 femoral nerve)
Tibialis anterior (L4-L5 Deep peroneal nerve)
Peroneus longus (L5*-S1 superficial peroneal nerve)
Biceps femoris long head ( L5, S1 sciatic nerve)
Gluteus maximus ( L5, S1 inferior gluteal nerve)
medial gastroc (S1, S2 Tibial nerve)

Always do paraspinals

Confirmatory:
Adductor longus - L3
Adductor longus - L4
Medial hamstrings - L5
Lateral hamstrings - S1