Innervation of the Lower Limb

Question 1

What nerve supplies the anterior thigh muscles (quadraceps, sartorius, iliopsoas, pectineus) & which level does it emerge from?

Answer 1

Femoral Nerve - L2, L3, L4

Question 2

Sciatic nerve emerges between which vertebral levels?

Answer 2

L4-S3

Question 3

Posterior compartment of leg is supplied by which nerve? Where does it emerge?

Answer 3

Tibial part of the sciatic nerve, L4-S3

Question 4

True hamstrings (semimembranosus, semitendinosus, long head of biceps femoris) are supplied by which nerve?

Answer 4

Tibial part of sciatic nerve

Question 5

Muscles of sole of foot are supplied by which nerves?

Answer 5

Medial & lateral plantar blanches of tibial part of sciatic nerve

Question 6

Medial compartment of thigh is supplied by which nerve? Which levels does it emerge?

Answer 6

Obturator nerve, supplied from L2, L3, L4.

Question 7

Short head of biceps femoris is supplied by which nerve

Answer 7

Common fibular nerve (branch of sciatic, L4-S2)

Question 8

Superficial fibular branch of common fibular neve supplies which muscles of the leg?

Answer 8

Lateral compartment (fibularis longus & brevis)

Question 9

Muscles of anterior leg are supplied by which branch of which nerve?

Answer 9

Deep fibular branch of the common fibular nerve