Lower Limb - Lateral Compartment of the Leg (1)

Question 1

What is another name for the lateral compartment of the leg?

Answer 1

Everter compartment.

Question 2

Name the two muscles of the lateral compartment.

Answer 2

Fibularis Longus

Fibularis Brevis

Question 3

Describe the proximal attachments of the muscles of the lateral compartment.

Answer 3

Both attach to the fibula. Fibularis Longus attaches to the superior two thirds. Fibularis Brevis attaches to the inferior two thirds.

Question 4

Describe the course of the Fibularis Longus tendon, going into its distal attachment.

Answer 4

The tendon passes posterior to the lateral malleolus, then beneath the foot, crossing to the medial side, attaching to the base of the 1st metatarsal.

Question 5

Describe the course of the Fibularis Brevis tendon, going into its distal attachment.

Answer 5

The tendon passes posterior to the lateral malleolus, then attaches to the base of the 5th metatasal.

Question 6

What is the innervation to the muscles of the lateral compartment? Where does this nerve come from?

Answer 6

Superficial fibular nerve (a branch of the common fibular nerve, which is a branch of the sciatic nerve)

Question 7

What is the blood supply to the lateral compartment?

Answer 7

Superiorly: perforating branches from the anterior tibial artery.
Inferiorly: perforating branches from the fibular artery.