Anterior and Lateral Leg

Question 1

What does the tibia articulate with?

Answer 1

Femur and the Talus

Question 2

Which of the leg bones is weight bearing?

Answer 2

The tibia

Fibula is for muscle attachments

Question 3

What does the fibula articulate with inferiorly?

Answer 3

Talus

Question 4

Name the 3 compartments of the leg, separated by crural (sp?) fascia

Answer 4

Anterior, Lateral, Posterior

Question 5

The deep fascia in the leg is important in preventing swelling of the leg muscles by promoting venous (blood) return, which helps to form the…

Answer 5

Calf pump

Question 6

The compartment of the leg that is the dorsi flexor/extensor

Answer 6

Anterior

Question 7

What innervates the anterior compartment of the leg?

Answer 7

Deep Fibular/Peroneal Nerve

Question 8

Name the 4 muscles of the anterior compartment of the leg

Answer 8

Tibialis Anterior
Extensor Digitorum Longus
Fibularis/Peroneus Tertius
Extensor Hallucis Longus

Question 9

The muscle that is just lateral to the tibia and has a strong tendon located lateral to the medial malleolous, and is the strongest dorsiflexor and invertor of the foot

Answer 9

Tibialis Anterior

Question 10

Origin and Insertion of the tibialis anterior

Answer 10

Origin: Lateral condyle, interosseous membrane

Insertion: Medial cuneiform and 1st metatarsal

Question 11

Innervation of the tibialis anterior

Answer 11

Deep Fibular Nerve, branch of the sciatic nerve

Question 12

Actions of the tibialis anterior

Answer 12

Dorsiflexion and inversion of the foot

Question 13

The most laterally placed muscle in the anterior compartment of the leg, divides into 4 tendons

Answer 13

Extensor Digitorum Longus

Question 14

Origin and Insertion of the extensor digitorum longus

Answer 14

Origin: Lateral condyle of the tibia, Fibula, Interosseous membrane

Insertion: Phalanges of toes 2,3,4,5 via extensor expansion hood

Question 15

Innervation of the extensor digitorum longus

Answer 15

Deep Fibular Nerve

Question 16

Action of the extensor digitorum longus

Answer 16

Extend the toes, dorsiflexion, and eversion of the foot

Question 17

The muscle that is fused with the extensor digitorum longus. Just above the ankle joint a small portion of the muscle gives rise to a tendon which inserts on the dorsum of the foot, not the toes

Answer 17

Fibularis Tertius

Question 18

Origin and insertion of the fibularis tertius

Answer 18

Origin: Distal part of fibula, interosseeous membrane

Insertion: Dorsum of 5th metatarsal

Question 19

Action of the fibularis tertius

Answer 19

Deep fibular Nerve

Question 20

Action of the fibularis tertius

Answer 20

Dorsiflexion and eversion

Question 21

The muscle deeply placed between the tibialis anterior and the extensor digitorum longus.

What does hallux mean?

Answer 21

Extensor Hallucis Longus

Great Toe

Question 22

Origin and insertion of the extensor hallucis longus

Answer 22

Origin: Fibula, Interosseous membrane

Insertion: Distal phalynx of the great toe

Question 23

Innervation of the extensor hallucis longus

Answer 23

Deep Fibular Nerve

Question 24

Action of the extensor hallucis longus

Answer 24

Extends big toe and helps with dorsiflexion of the foot

Question 25

The thick band of fibers holding the tendons on the anterior side of the ankle

Answer 25

Superior and inferior extensor retinacula

Question 26

Edema and pain the the area of the distal 2/3 of the tibia. Anterior tibialis strain results from micro tears in the periosteum of the tibia, results from injury or athletic overuse of the muscle in the anterior compartment

Answer 26

Shin Splints

Question 27

Results from injury to the deep fibular/peroneal nerve, the foot cannot be dorsiflexed

Answer 27

Foot Drop from Shin slins

Question 28

What do the muscles of the lateral compartment do?

Answer 28

Plantar flexion and eversion

Question 29

What innervates the lateral compartment of the leg?

Answer 29

Superficial fibular/peroneal nerve

Question 30

Name the two muscle of the lateral compartment of the leg

Answer 30

Fibularis Longus Fibularis Brevis

Question 31

The superficial lateral compartment muscle

Answer 31

Fibularus Longus

Question 32

Origin and insertion of the fibularis longus

Answer 32

Origin: Fibula, more superiorly than brevis Insertion: 1st metatarsal and medial cuneiform

Question 33

Innervation of the fibularis longus

Answer 33

Superficial fibular nerve

Question 34

Action of the fibularis longus

Answer 34

Plantar flexion, eversion, support arches of the foot

Question 35

The lateral compartment muscle that lies deep

Answer 35

Fibularis Brevis

Question 36

Origin and insertion of the fibularis brevis

Answer 36

Origin: fibula, distal to longus insertion Insertion: 5th metatarsal tuberosity

Question 37

Innervation of the fibularis brevis

Answer 37

Superficial fibular nerve

Question 38

Action of the fibularis brevis

Answer 38

Plantar flexion and eversion

Question 39

Fibrous bands holding the peroneal/fibular tendons behind the lateral malleolus

Answer 39

Peroneal Retinacula