Anterior/ Lateral Leg & Dorsum Of Foot

Question 1

Name the muscles in the lateral compartment

Answer 1

2 muscles: Peroneus Longus and Peroneus Brevis

Question 2

Which nerve innervates the lateral compartment?

Answer 2

Superficial Peroneal Nerve (L5, S1, S2)

Question 3

Function of Peroneus Brevis

Answer 3

Eversion of the foot

Question 4

Function of Peroneus Longus

Answer 4

Eversion of the foot and some plantarflexion of foot

Question 5

Attachments of Peroneus Brevis

Answer 5

Originates: Lower 2/3 of Lateral Fibula shaft
Insertion: Lateral tubercle at bade of 5th metatarsal

Question 6

Attachments of Peroneus Longus

Answer 6

Originates: Head and Lateral 2/3 of Fibula shaft
Insertion: Base of 1st metatarsal and medial cuniform

Question 7

Name the muscles in the Anterior Compartment

Answer 7

4 Muscles: Tibialis Anterior, Peroneus Tertius, Extensor Digitorum Longus and Extensor Hallucis Longus

Question 8

Which nerve innervates the anterior compertment?

Answer 8

Deep Peroneal Nerve (L4,L5)

Question 9

Function of Tibialis Anterior

Answer 9

Dorsiflexion and inversion of foot, support at medial arch

Question 10

Function of Extensor Hallucis Longus

Answer 10

Extension of hallux (big toe) and dorsiflexion of foot

Question 11

Function of Extensor Digitorum Longus

Answer 11

Extension of toes and dorsiflexion of foot

Question 12

Function of Peroneus Tertius

Answer 12

Dorsiflexion and assists in eversion of foot

Question 13

Attachments of Tibialis Anterior

Answer 13

Origin: Lateral condyle of Tibia, interosseus membrane and Lateral Tibial surface
Insertion: Medial and inferior surfaces of medial cuniform and adjacent surfaces on base of 1st metatarsal

Question 14

Attachments of Extensor Hallucis Longus

Answer 14

Origin: middle anterior surface of Fibula and interosseus membrane
Insertion: Dorsal aspect of distal Phalanx of Hallux

Question 15

Attachments of Extensor Digitorum Longus

Answer 15

Origin: lateral tibial condyle, superior 3/4 of medial surface of Fibula, interosseous membrane
Insertion: Medial and Distal phalanges of lateral 4 digits

Question 16

Attachments of Peroneus Tertius

Answer 16

Origin: Inferior 1/3 anterior Fibula and Interosseous membrane
Insertion: Dorsum of base of 5th metatarsal

Question 17

Superior Extensor Retinacula: Attachments

Answer 17

Origin: Anterior border of the tibia
Insertion: Lower end of the Fibula

Question 18

Inferior Extensor Retinacula: Attachments

Answer 18

Y- Shaped
Origin: laterally to calcaneous
Insertion: upper section to medial malleolus; lower section to pass around medial border and blend with fascia

Question 19

Name the muscles of the Dorsum of foot

Answer 19

Extensor Hallucis Brevis and Extensor Digitorum Brevis

Question 20

Which nerve innervates muscles of Dorsum of Foot

Answer 20

Deep Peroneal Nerve BUT at (L5, S1)

Question 21

Attachments of Extensor Hallucis Brevis

Answer 21

Origin: common origin of Superior surface of Calcaneus and inferior extensor retinaculum
Insertion: base of proximal phalanx of Hallux

Question 22

Attachments of Extensor Digitorum Brevis

Answer 22

Origin: common origin of Superior surface of Calcaneus and inferior extensor retinaculum
Insertion: Long extensor tendon of digits 2-4

Question 23

Name the 2 terminal branches of the sciatic nerve

Answer 23

Tibial nerve and Common Peroneal nerve

Question 24

Where does the Sciatic Nerve divide?

Answer 24

Popliteal Fossa

Question 25

Where does the Common Peroneal nerve divide?

Answer 25

after wrapping around the neck of the fibula

Question 26

What are the terminal branches of the Common Peroneal nerve?

Answer 26

Deep Peroneal nerve and Superficial Peroneal nerve

Question 27

When does the Superficial Peroneal nerve become cutaneous?

Answer 27

after supplying the lateral compartment, about half way down the leg

Question 28

Cutaneous innervation from Superficial Peroneal nerve supplies what part of leg?

Answer 28

distal anterior surface of leg and most of the dorsum of the foot

Question 29

Cutaneous innervation from Deep Peroneal nerve supplies what part of the leg?

Answer 29

just innervation to the veb between digits 1 and 2. (hallux and second digit)

Question 30

What name is given to the Femoral artery after exiting adductor hiatus?

Answer 30

Popliteal artery

Question 31

What are the terminal branches of the Popliteal artery?

Answer 31

Anterior Tibial artery and Posterior Tibial Artery, which gives the Peroneal (Fibular) Artery

Question 32

What does the Anterior Tibial Artery supply?

Answer 32

runs on the anterior surface of interosseous membrane and supplies Anterior Compertment

Question 33

What does the Posterior Tibial Artery supply?

Answer 33

Primarily supplies the Posterior compartment

Question 34

What does the Peroneal artery supply?

Answer 34

The Lateral Compartment

Question 35

What is the Anterior Tibial artery called after the ankle joint?

Answer 35

The Dorsalis Pedis

Question 36

What branches does the Dorsalis Pedis give?

Answer 36

Lateral Tarsal Artery; Deep Plantar Artery; Acruate Artery; Metatarsal and Digital Arteries

Question 37

What does the Deep Plantar artery supply?

Answer 37

The sole of the foot, dives between digits 1 and 2

Question 38

What does the Metatarsal and Digital arteries supply?

Answer 38

These are small branches of the acruate and deep plantar arteries that supply the digits