Lower limb anatomy

Question 1

neurovascular innervation of the thigh

Answer 1

1. femoral nerve (anterior): quads, flexion of the hip, an extension of the knee
2. sciatic nerve (posterior) extension of the hip, flexion of the knee

Question 2

neurovascular innervation of lower limb

Answer 2

sciatic nerve divides into

1. tibial (posterior)
2. common fibular (wraps around)

common fibular divides into

3. superficial fibular (lateral)
4. deep fibular (anterior)

Question 3

thigh compartments

Answer 3

anterior- flexion of hip, extension of knee *femoral nerve

middle- hip adduction *obsturator nerve

posterior- flexion of knee, extension of hip *sciatic nerve

Question 4

lower limb neurovascular supply

Answer 4

tibial nerve

• posterior
• plantarflexion
• inversion

common fibular
wraps around from posterior to anterior and gives the:

superficial fibular nerve

• lateral compartment of lower limb
• eversion
• plantarflexion

deep fibular nerve
*anterior compartment
*inversion
*dorsiflexion 
(FOOT DROP)

Question 5

foot drop

Answer 5

damage to the deep fibular nerve results in foot drop as it cannot dorsiflex so cannot oppose the plantarflexion of tibial nerve.