Lower leg

Question 1

Dermatome supply L3

Answer 1

anterior and medial thigh and knee

Question 2

Dermatome supply L4

Answer 2

medial leg, medial ankle and side of foot

Question 3

Dermatome supply L5

Answer 3

lateral leg, dorsum of foot, medial sole, 1-3 toes

Question 4

Dermatome supply S1

Answer 4

lateral ankle, lateral side of dorsum and sole of foot, 4-5 toes

Question 5

Dermatome supply S2

Answer 5

Posterior leg, posterior thigh, buttocks and penis

Question 6

what muscles are in the lateral compartment of the lower leg

Answer 6

Fibularis (Peroneus) Longus
Fibularis (Peroneus) Brevis

Question 7

origin of fibularis longus

Answer 7

Head and upper 2/3 of lateral fibula

Question 8

origin of fibularis brevis

Answer 8

Lower 2/3 of lateral fibula

Question 9

insertion of fibularis longus

Answer 9

Base of the 1st metatarsal and medial cuneiform (plantar surface)

Question 10

insertion of fibularis brevis

Answer 10

Tuberosity of the 5th metatarsal (lateral side)

Question 11

nerve supply of fibularis longus and brevis

Answer 11

Superficial fibular (peroneal) nerve (L5, S1, S2)

Question 12

Describe the route of peroneus longus in the foot

Answer 12

Tendon runs posterior to the lateral malleolus in the fibular (peroneal) groove of the calcaneus

Then crosses the sole of the foot obliquely from lateral to medial:

Passes under the foot in a groove on the anterior inferior aspect of the cuboid bone (fibular groove)

Inserts on the plantar surface of the base of the 1st metatarsal and medial cuneiform

Question 13

The deep peroneal nerve travels through the lower leg with which artery?

Answer 13

anterior tibial artery