Muscles of the Ant/Lat Leg

Question 1

Tibialis Anterior

Answer 1

O: Lateral Condyle and superior 1/2 of lateral surface of Tibia and Interosseous membrane
I: Medial and inferior surfaces of Medial Cuneiform and base of 1st Metatarsal
N: Deep Fibular Nerve (L4, L5)
A: Dorsiflexes the Ankle and Inverts Foot

Question 2

Extensor Digitorum Longus

Answer 2

O: Lateral Condyle of Tibia and superior 3/4 of medial surface of Fibula and Interosseous Membrane
I: Middle and distal Phalanges of lateral 4 digits
N: Deep Fibular Nerve (L4, L5)
A: Extends lateral 4 Digits and Dorsiflexes Ankle

Question 3

Extensor Hallucis Longus

Answer 3

O: Middle part of anterior surface of Fibula and Interosseous Membrane
I: Dorsal aspect of base of distal Phalanx of Great Toe (hallux)
N: Deep Fibular Nerve (L4, L5)
A: Extends Great Toe and Dorsiflexes Ankle

Question 4

Fibularis Tertius

Answer 4

O: Inferior 1/3 of anterior surface of Fibula and Interosseous Membrane
I: Dorsum of base of 5th Metatarsal
N: Deep Fibular Nerve (L4, L5)
A: Dorsiflexes Ankle and aids in Eversion of Foot

Question 5

Fibularis Longus

Answer 5

O: Head and superior 2/3 of lateral surface of Fibula
I: Base of 1st Metatarsal and medial Cuneiform
N: Superficial Fibular Nerve (L5, S1, S2)
A: Everts Foot and weakly Plantarflexes Ankle

Question 6

Fibularis Brevis

Answer 6

O: Inferior 2/3 of lateral surface of Fibula
I: Dorsal surface of Tuberosity on lateral side of base of 5th Metatarsal
N: Superficial Fibular Nerve (L5, S1, S2)
A: Everts Foot and weakly Plantarflexes Ankle