Anterior and lateral compartment

Question 1

What is the sheet of tissue between the tibia and fibula called?

Answer 1

The interosseous membrane made from deep fascia

Question 2

Describe how compartment syndrome develops

Answer 2

If tibia or fibula broken blood fluid from bone marrow leaks into anterior compartment where there is no where for the fluid to go pressure builds up.

Question 3

Describe dorsiflexion

Answer 3

Moving foot towards shin. Extension of ankle

Question 4

Describe plantarflexion

Answer 4

Pointing toes towards ground. Flexion of ankle

Question 5

Describe inversion and eversion

Answer 5

Inversion ankle rolling medially.

Eversion ankle rolling laterally.

Question 6

Name the muscles in the anterior compartment of the leg

Answer 6

Tibialis anterior, extensor digitorum longus, extensor hallicus longus, peroneus tertius

Question 7

Tibialis anterior

Answer 7

Origin superior half of lateral tibia and IO membrane. Insertion medial cuneiform and base of 1st metatarsal. Action dorsiflexion of ankle and inversion of foot. Nerve deep peroneal

Question 8

Extensor digitorum longus

Answer 8

Origin lateral condoyle of tibia and superior 3/4 of medial fibula and IO membrane. Insertion middle and distal phalanges of four toes.
Action extends toes and dorsiflexes ankle.
Nerve deep peroneal

Question 9

Extensor hallicus longus

Answer 9

Origin middle anterior fibula. Insertion Base of distal phalanx of great toe.
Extends toe and dorsiflexes ankle. Deep peroneal nerve

Question 10

Peroneous tertius

Answer 10

Inferior 1/3 of anterior fibula and IO membrane. Insertion base of fifth metatarsal.
Dorsiflexes ankle, everts foot at subtler joint. Deep peroneal nerve

Question 11

Muscles of the lateral compartment

Answer 11

Peroneus longus.

Peroneus brevis

Question 12

Peroneus longus

Answer 12

Origin superior 2/3 lateral fibula. Insertion base of 1st metatarsal and medial cuneiform (long tendon runs under foot). Everts foot, weak plantar flexion. Nerve superficial peroneal

Question 13

Peroneus brevis

Answer 13

Origin inferior 2/3 lateral fibula. Insertion base of 5th metatarsal. Everts foot and weak plantar flexion. Superficial peroneal.

Question 14

What is the job of the retinaculum

Answer 14

Prevents bowstringing and damage to tendons.

Question 15

What are the spinal levels that contribute to the sciatic nerve

Answer 15

L4 L5 S1 S2 S3

Question 16

What are the branches of the sciatic nerve

Answer 16

Tibial and common peroneal nerve.

Question 17

What does the common peroneal nerve branch into

Answer 17

The deep peroneal and superficial peroneal nerves

Question 18

Describe the nerve that branches from the tibial and common peroneal nerves

Answer 18

Sural nerve. Runs down posterior of leg suppling skin.

Question 19

What nerve supplies most of the dorsal surface of the foot

Answer 19

The superficial peroneal nerve

Question 20

What nerve supplies the webspace between the 1st and 2nd toes

Answer 20

The deep peroneal

Question 21

What nerve supplies the medial side of the foot

Answer 21

The saphenous nerve

Question 22

What nerve covers the lateral border of the foot

Answer 22

The sural nerve

Question 23

What nerve would you use for a nerve biopsy

Answer 23

Sural nerve

Question 24

What are the main actions of the lateral compartment leg muscles

Answer 24

Eversion of the ankle and weak plantar flexion. Origin is lateral fibula insertion longus- first cuneiform, braves base of 5th metatarsal

Question 25

What nerve supplies the first webspace in the foot (between big two and 2nd toe)

Answer 25

Deep peroneal

Question 26

What arteries branch from the femoral artery and which gives off a branch that can be used as a pulse (and name it)

Answer 26

Anterior and posterior tibial arteries and the peroneal artery. The anterior tibial artery gives off dorsalis pedis which can be used for a pulse in line with the second toe.