Common Fibular Nerve

Question 1

Roots

Answer 1

L4-S3

Question 2

Motor functions

Answer 2

Short head of biceps femoris directly

Supplies muscles in lateral and anterior compartments of the leg via branches

Question 3

Sensory functions

Answer 3

Skin over the upper lateral and lower posterolateral leg

Supplies cutaneous innervation to the skin of the anterolateral leg and dorsum of the foot via branches

Question 4

Damage to the common fibular nerve

Answer 4

Damaged by a fracture of the fibula or a tight plaster cast
Patients lose ability to dorsiflex the foot at the ankle joint _. permanent plantarflexion, footdrop
Loss of sensation over dorsum of the foot and lateral side of the leg