Lower limb nervous distribution

Question 1

Nerve innervating skin patch on medial thigh

Answer 1

Obdurator nerve

Question 2

Nerve innervating skin of anterior thigh and part of knee

Answer 2

Femoral nerve

Question 3

Nerve innervating the skin of the lateral thigh

Answer 3

Lateral cutaneous nerve of thigh (from lumbar plexus)

Question 4

Nerve innervating the skin of the medial leg

Answer 4

Saphenous nerve (from the femoral nerve)

Question 5

Nerve innervating the skin of the upper lateral leg

Answer 5

Common fibular nerve

Question 6

Nerve innervating the skin of the lower lateral leg

Answer 6

Common fibular nerve - superficial branch

Question 7

Nerve innervating the skin of the posterior thigh, back of knee

Answer 7

Posterior cutaneous nerve (from the sacral plexus)

Question 8

Nerve innervating the sole, back of foot

Answer 8

Tibial nerve

Question 9

Nerve innervating half of big toe, half of second toe

Answer 9

Common fibular nerve - deep branch

Question 10

Spinal segments innervating skin of the anterior thigh above knee

Answer 10

L1, L2, L3

Question 11

Spinal segments innervating skin of anterior leg below knee

Answer 11

L4, L5, S1

Question 12

Spinal segments innervating skin of the sole of the foot

Answer 12

L5, S1

Question 13

Spinal segments innervating skin of the posterior leg

Answer 13

L4, L5, S2

Question 14

Spinal segments innervating skin of the posterior thigh

Answer 14

L2, L3, S2, S3

Question 15

Spinal segments innervating skin of buttocks

Answer 15

S3, S4, S5

Question 16

Skin innervated by L1

Answer 16

Upper, anterior thigh

Question 17

Skin innervated by L2

Answer 17

Mid, anterior thigh

Question 18

Skin innervated by L3

Answer 18

Anterior knee

Question 19

Skin innervated by L4

Answer 19

Medial calf

Question 20

Skin innervated by L5

Answer 20

Lateral calf, running down to big toe and second toe, medial sole of foot

Question 21

Skin innervated by S1

Answer 21

Lateral three toes of foot, dorsal and ventral

Question 22

SKin innervated by S2

Answer 22

Mid strip of skin on posterior leg and thigh

Question 23

Skin innervated by S3

Answer 23

Triangular patch of skin below buttock (medial)

Question 24

Skin innervated by S4, S5

Answer 24

Concentric rings around anus