Anterior And Lateral Leg, Dorsum Of Foot

Question 0

Tibialis anterior insertion

Answer 0

Medial and inferior surfaces of medial cuneiform

Base of the 1st metatarsal

Question 1

Tibialis anterior origin

Answer 1

• Lateral condyle of tibia

- superior two thirds of lateral surface of tibia and interosseous membrane

Question 2

Innervation for all muscles of the anterior leg

Answer 2

Deep fibular nerve

Question 3

Tibialis anterior action

Answer 3

Dorsiflexes ankle

Inverts foot

Question 4

Extensor hallucis longus origin

Answer 4

Middle part of anterior surface of fibula and interosseous membrane

Question 5

Extensor hallucis longus insertion

Answer 5

Dorsal aspect of base of distal phalanx of great toe (hallux)

Question 6

Extensor hallicus longus action

Answer 6

Extends big toe, dorsi flexes ankle

Question 7

Extensor digitorum longus origin

Answer 7

• Lateral condyle of tibia

- Superior two thirds of anterior surface of fibula and interosseous membrane

Question 8

Extensor digitorum longus insertion

Answer 8

Middle and distal phalanges of lateral four digits

Question 9

Extensor digitorum action

Answer 9

Extends lateral four digits

Dorsiflexes ankle

Question 10

Fibularis tertius origin

Answer 10

Inferior third of anterior surface of fibula and interosseous membrane

Question 11

Fibularis tertius insertion

Answer 11

Dorsum of base of 5th metatarsal

Question 12

Fibularis tertius action

Answer 12

Dorsi flexes ankle

Question 13

What is the common action for the anterior leg muscles

Answer 13

Dorsi flexes ankle

Question 14

Fibularis longus origin

Answer 14

Head and superior two thirds of lateral surface of fibula

Question 15

Fibularis longus insertion

Answer 15

Base of first metatarsal and medial cuneiform

Question 16

Common innervation for the lateral compartment of the leg

Answer 16

Superior fibular nerve

Question 17

Common action for the muscles of the lateral compartment of the leg

Answer 17

Evert foot

Weakly planterflex ankle

Question 18

Fibularis brevis origin

Answer 18

Middle part of lateral surface of fibula

Question 19

Fibularis brevis insertion

Answer 19

Dorsal surface of tuberosity of base of 5th metatarsal

Question 20

retinacula

Answer 20

• bound the anterior compartment of the leg inferiorly
• two bands of deep fascia that help to bind the muscle tendons
• preventing the tendons from bow-stringing

(Just like the retinaculum of the wrist)

Question 22

superior extensor retinaculum

Answer 22

• boundary of the anterior compartment of the leg
• runs from fibula to tibia
• strong

Question 23

inferior extensor retinaculum

Answer 23

• “Y” shaped
• boundary of the anterior compartment of the leg
• forms a strong loop around the tendons of fibularis tartius and extensor digitorum longus

Question 24

extensor digitorum brevis (EBD) and extensor hallucis brevis (EHB)

Answer 24

• EHB is a part of EBD
• forms a mass on the lateral part of the dorsum of the foot
• they aid Extensor digitorum and extensor hallucis longus in extending digitis 1-4
• inntervated by deep fibular nerve

Question 25

Deep femoral nerve

Answer 25

- one of the two terminal branches of common fibular nerve - supplies the anterior compartment - runs with anterior tibial artery

Question 26

anterior tibial artery

Answer 26

- branch of the popliteal artery | - when it enters the ankle it then becomes dorsalis pedis artery

Question 27

what muscles are in the lateral compartment of the leg

Answer 27

fibularis longus | fibularis brevis

Question 28

superior fibular nerve

Answer 28

- 2nd terminal branch of the common fibular nerve | - after they supply the two muscles of the lateral compartment it continues as a cutaneus nerve

Question 29

footdrop

Answer 29

injury to the common fibular nerve

Question 30

ankle joint

Answer 30

- hinge synovial - talocrual articulation - tibia/fibula with tarus

Question 31

malleolar mortise (deep socket)

Answer 31

- the distal end of the tibia and fibula form this | - the pulley shaped trochlea of the talus fits into here

Question 32

what helps stablize the ankle joint from being spread apart

Answer 32

-strong interosseous tibiofibular ligament | along with anterior and posterior tibiofibular ligaments

Question 33

what reinforces the ankle joint laterally

Answer 33

lateral ligament of the ankle (three seperate ligaments make this up)

Question 34

anterior talofibular ligament

Answer 34

- part of the lateral ligament of the ankle - flat, weak - lateral malleolus to neck of the talus

Question 35

posterior talofibular ligament

Answer 35

- part of the lateral ligament of the ankle - thick, fairly strong - runs from the malleolar fossa of fibula to lateral tubercule of the talus

Question 36

calcaneofibular ligament

Answer 36

- part of the lateral ligament of the ankle | - tip of the lateral malleolus to the lateral surface of the calcaneus

Question 37

what reinforces the ankle joint medially

Answer 37

-Medial ligament of the ankle (Deltoid Ligament)

Question 38

Medial ligament of the ankle (Deltoid ligament)

Answer 38

- large, strong | - runs from medial malleolus then fans to attach to the talus, calcaneus and navicular (has four part)

Question 39

What are the four parts of the deltoid ligament?

Answer 39

-tibionavicular, tibiocalcaneal, anterior and posterior tibiotalar

Question 40

what are the movements of the ankle joint

Answer 40

- dorsiflexion - plantarflexion (wobble as well, which is abduction, adduction, inversion, eversion) (these movements occur during plantarflexion due to the weakness in the joint during that motion)

Question 41

plantarflexion

Answer 41

muscles in the posterior and lateral compartment of the leg

Question 42

dorsiflexion

Answer 42

-mainly done by the anterior compartment of the leg

Question 43

what are the four muscles of the anterior leg

Answer 43

tibialis anterior extensor digitorum longus extensor hallucis longus fibularis tertius

Question 44

What formed the leg?

Answer 44

Anterior and posterior intermuscular septum, interosseous membrane, two leg bones

Question 45

What is the intermuscular septum

Answer 45

Continuation of deep fascia of the leg, that projects in to help to seperate the compartment of the leg. (Anterior and posterior to seperate the three compartments) (The transverse separates the deep and superficial posterior compartments)

Question 46

What are the three compartment of the thigh

Answer 46

Posterior Anterior Medial

Question 47

What are the three muscles of the leg

Answer 47

Anterior Posterior Lateral