Lower limb nerve supplies

Question 1

Nerve supply of obturator internus?

Answer 1

Nerve to obturator internus (branch of sacral plexus)

Question 2

What nerve supplies piriformis?

Answer 2

Nerve to piriformis (branch of sacral plexus)

Question 3

Which nerve supplies
A) Superior gemellus?
B) Inferior Gemellus?

Answer 3

Superior gemellus = nerve to obturator internis

Inferior gemellus = nerve to quadrature femoris

Question 4

Which nerve supplies Quadratus femoris?

Answer 4

Nerve to quadratus femoris (branch of sacral plexus)

Question 5

Which nerve supplies the anterior thigh?

Answer 5

Femoral (L2-4)

Question 6

What is the nerve supply of psoas major?

Answer 6

ventral rami of L1-3

Question 7

Which nerve supplies the medial compartment of the thigh?

Answer 7

Obturator (L2-4)

Question 8

Describe the innervation of adductor magnus

Answer 8

Adductor compartment supplied by obturator nerve

Hamstring compartment supplied by tibial component of sciatic nerve

Question 9

Which nerve innervates the posterior compartment of the thigh?

Answer 9

The sciatic nerve

Question 10

Describe the innervation of biceps femoris

Answer 10

Long head innervated by tibial part of sciatic nerve

short head innervated by fibular part of sciatic nerve

Question 11

Which nerve supplies the anterior compartment of the lower leg?

Answer 11

Deep fibular nerve (L4-S1)

Question 12

Which nerve supplies the lateral compartment of the lower leg?

Answer 12

Superficial fibular nerve (L5-S1)

Question 13

Which nerve supplies the posterior compartment of the lower leg?

Answer 13

Tibial nerve (L4-S3)

Question 14

Which nerve supplies the intrinsic muscles of the foot on the dorsal aspect?

Answer 14

Deep fibular nerve

Question 15

Which nerve supplies abductor hallucis, flexor digitorum brevis, 1st medial lumbrical and flexor hallucinations brevis?

Answer 15

Medial plantar nerve- L4-5 (branch of tibial)

Question 16

Which nerve supplies abductor digiti minimi, quadratus plantae, the lateral 3 lumbricals, adductor hallucis, flexor digiti minimi brevis and the interossei?

Answer 16

Lateral plantar nerve- S1-2 (branch of tibial)