Anterior leg muscles

Question 1

How many muscles are in the anterior leg compartment

Answer 1

4 muscles

Tibialis anterior
Extensor Digitorum Longus
Extensor Hallucis Longus
Fibularis Tertius

Question 2

Tibialis anterior

PA
DA
N
A

Answer 2

• Lateral condyle and superior ½ of lateral surface of tibia & interosseus membrane
• Medial & Inferior surface of the medial cuneiform and base 1st metatarsal
• Deep fibular nerve
• Dorsiflex ankle and invert the foot

Question 3

Extensor Digitorum Longus

PA
DA
N
A

Answer 3

• Lateral condyle of the tibia, sup ¾ of the medial surface of fibula
• Middle & distal phalanges lateral 4 toes
• Deep fibular nerve
• Extends the lateral 4 digits and dorsiflexes ankle

Question 4

Extensor Hallucis Longus

PA
DA
N
A

Answer 4

• Middle part of the ant surface of the fibula and adjacent interosseus membrane
• Dorsal surface of distal phalanx of great toe (Hallux)
• Deep fibular nerve
• Extends great toe and dorsiflexion of ankle

Question 5

Fibularis Tertius

PA
DA
N
A

Answer 5

• Inferior 1/3 of the ant surface of the fibula, interosseous membrane
• Base of the 5th metatarsal
• Deep fibular nerve
• Dorsiflexion ankle and aids in eversion