OINA Compartments of the leg (semester 2 year 1) Flashcards Preview

Anatomy > OINA Compartments of the leg (semester 2 year 1) > Flashcards

Flashcards in OINA Compartments of the leg (semester 2 year 1) Deck (13):
1

Tibialis anterior

Anterior compartment of the leg

O- Lateral condyle of the tibia, superior ½ of the lateral surface of the tibia and interosseous membrane

I-medial and inferior surface of the tibia and interosseous membrane

N-Deep fibular nerve

A-dorsiflexes ankle and inverts foot

2

Extensor Hallucis Longus

Anterior compartment of the leg

O- Middle part of the anterior surface of the fibula and adjacent interosseous membrane

I-Dorsal surface of the base of the distal phalanx, (1st digit)

N-Deep fibular nerve

A- Extends the great toe, dorsiflexes the ankle

3

Extensor digitorum longus

Anterior compartment of the leg

O- Lateral condyle of the tibia, superior 3/4 of the medial surface of the fibula, adjacent interosseous membrane

I-extensor expansion, middle and distal phalanges and lateral 4 toes

N- Deep fibular nerve

A-extends lateral 4 digits and dorsiflexes ankle

4

Fibularis tertius

Anterior compartment of the leg

O- inferior 1/3 of the anterior surface of the fibular and adjacent interosseous membrane

I-dorsum of the base of the 5th metatarsal

N-Deep fibular nerve

A-dorsiflexes ankle and aids in eversion

5

Fibularis longus

Lateral compartment of the leg

O- head and superior 2/3 of the lateral fibula

I-base of the 1st metatarsal and medial cuneiform

N-superficial fibular nerve

A- Everts foot, weak plantar flexor of the ankle, stabelises the leg on the foot

6

Fibularis brevis

Lateral compartment of the leg

O- inferior 2/3 of the lateral surface of the fibula

I- tuberosity on the lateral side of the base of the 5th metatarsal

N- superficial fibular nerve

A- Everts foot, weak plantar flexor of the ankle, stabelises leg on the foot

7

Gastrocnemius

Superficial aspect of the posterior compartment of the leg

O-
Lateral head:
Lateral side of the lateral condyle of the femur
Medial head:
Popliteal surface of the femur, superior to medial condyle

I-posterior surface of the calcaneus via the calcaneal tendon

N- Tibial nerve

A-plantar flexion of the ankle when knee extended, raises heel during walking, flexes the knee

8

Soleus

Superior aspect of the posterior compartment of the leg

O- posterior head and superior ¼ of the posterior fibula, soleal line and middle 1/3 od the medial border of the tibia, tendinous arch extending between bony attachments

I- posterior surface of the calcaneus via the calcaneal tendon

N- tibial nerve

A-Plantar flexes the ankle

9

Plantaris

Superficial aspect of the posterior compartment of the leg

O- inferior part of the lateral supracondylar line of the femur, oblique popliteal ligament

I-posterior surface of the calcaneus via calcaneal tendon

N-tibial nerve

A-weakly assists gastrocs in plantarflexing the ankle and flexing the knee

10

Popliteus

Deep part of the posterior aspect of the leg

O- lateral surface of the lateral condyle of the femur and lateral meniscus

I- posterior durface of the tibia, superior to soleal line

N-tibial nerve

A-flexion of the knee, lateral rotation od the demur, medial rotation of the tibia when knee is flexed

11

Flexor hallucis longus

Deep part of the posterior compartment of the leg

O- inferior 2/3 od posterior surface of the fibula, some adjacent interosseous membrane

I-base of the distal phalanx of the toe

N-tibial nerve

A-flexes the great toe, weak ankle plantarflexor, supports medial longitudinal arch of foot

12

Flexor digitorum longus

Deep aspect of the posterior compartment of the leg

O-medial part of the posterior tibia, inferior to the soleal line and by a broad tendon to the fibula

I-base of the distal phalanges of the lateral 4 digits

N-Tibial nerve

A-Flexes lateral 4 digits, plantar flexes ankle, supports longitudinal arches of the foot

13

Tibialis posterior

Deep aspect of the posterior compartment of the leg

O-Interosseus membrane, posterior tibia inferior to soleal line, posterior fibula

I-tuberosity of the navicular, cuneiforms, cuboid, sustentacular tali of the calcaneus, bases of 2nd, 3rd and 4th metatarsals

N-tibial nerve

A- Plantarflexes the ankle and inverts the foot, supports medial longitudinal arch