Muscles Of The Leg And Foot (O's And I's)

Question 1

Name the muscles of the anterior fascial compartment of the leg

Answer 1

• Tibialis Anterior
• Extensor Digitorum Longus
• Extensor Hallucis Longus
• Peroneus Tertius

Question 2

Tibialis Anterior

Answer 2

O: Lateral condyle and
upper half of lateral
surface of shaft of
tibia and interosseus
membrane

I:

Question 3

Extensor Digitorum Longus

Answer 3

Lateral condyle of
tibial; upper 2/3 of
anterior surface of
shaft of fibula and
interosseus
membrane

Question 4

Extensor Hallucis Longus

Answer 4

Middle 1/2 of anterior
surface of shaft of
fibula and interosseus
membrane

Question 5

Peroneus Tertius

Answer 5

Lower 1/3 of anterior
surface of shaft of
fibula and
interosseus membrane

Question 6

Name the muscles of the lateral fascial compartment of the leg

Answer 6

• Peroneus Longus
• Peroneus Brevis

Question 7

Peroneus Longus

Answer 7

Head and upper 2/3
of the lateral surface
of the fibula

Question 8

Peroneus Brevis

Answer 8

Lower 2/3 of lateral
surface of fibula

Question 9

Name the muscles of the superficial posterior fascial compartment of the leg

Answer 9

• Plantaris
• Gastrocnemius
• Soleus
• Popliteus

Question 10

Plantaris

Answer 10

Distal lateral
supracondyle ridge
of the femur

Question 11

Gastrocnemius

Answer 11

Lateral head:
lateral aspect of lateral condyle of femur and joint capsule

Medial head:
popliteal surface of the femur above the medial condyle and joint capsule

Question 12

Soleus

Answer 12

Posterior surface of
head and upper 1/3 of
shaft of fibula; soleal
line on the tibia and
the tendinous arch
between tibia and
fibula

Question 13

Popliteus

Answer 13

Lateral condyle of
femur and lateral
meniscus of the knee

Question 14

Name the muscles of the deep posterior fascial compartment of the leg

Answer 14

• Flexor Digitorum Longus
  -Flexor Hallucis Longus
  -Tibialis Posterior

Question 15

Flexor Digitorum Longus

Answer 15

The middle 1/3 of the
posterior surface of
tibia below soleal
line

Question 16

Flexor Hallucis Longus

Answer 16

Inferior 2/3 of
posterior surface of
shaft of fibula and the
interosseus membrane

Question 17

Tibialis Posterior

Answer 17

Upper posterior
surface of tibia,
interosseus membrane
and upper half of
posterior surface
of the fibula

Question 18

Name the intrinsic muscles of the dorsal surface of the foot

Answer 18

• Extensor Digitorum Brevis
• Extensor Hallucis Brevis

Question 19

Extensor Digitorum Brevis

Answer 19

Upper and lateral
surface of calcaneus

Question 20

Extensor Hallucis Brevis

Answer 20

Upper and lateral
surface of calcaneus

Question 21

Name the first layer of the intrinsic muscles of the plantar surface of the foot

Answer 21

• Abductor Hallucis
• Flexor Digitorum Brevis
• Abductor Digiti Minimi (Brevis)

Question 22

Abductor Hallucis

Answer 22

Medial tubercle of the
calcaneus and the
flexor retinaculum

Question 23

Flexor Digitorum Brevis

Answer 23

Medial tubercle of the
calcaneus

Question 24

Abductor Digiti Minimi (Brevis)

Answer 24

Medial and lateral
tubercle of the
calcaneus

Question 25

Name the second layer of the intrinsic muscles of the plantar surfaces of the foot

Answer 25

- Quadratus Plantae - Lumbricales (4)

Question 26

Quadratus Plantae

Answer 26

Medial and lateral sides of calcaneus

Question 27

Lumbricales (4)

Answer 27

Tendons of flexor digitorum longus

Question 28

Name the intrinsic muscles of the third layer of the plantar surface of the foot

Answer 28

- Flexor Hallucis Brevis - Adductor Hallucis - Flexor Digiti Minimi (Brevis)

Question 29

Flexor Hallucis Brevis

Answer 29

Cuboid, lateral (#3) cuneiform and tendon of Tibialis posterior

Question 30

Adductor Hallucis

Answer 30

Oblique head: bases of 2, 3, 4 metatarsals Transverse head: Deep transverse metatarsal ligaments of toes 3-5

Question 31

Flexor Digiti Minimi (Brevis)

Answer 31

Base of 5th metatarsal

Question 32

Name the fourth layer of intrinsic muscles of plantar surface of the foot

Answer 32

- Dorsal Interossei (4) - Plantar Interossei (3)

Question 33

Dorsal Interossei (4)

Answer 33

Adjacent sides of the metatarsals

Question 34

Plantar Interossei (3)

Answer 34

Bases and medial sides of the metatarsals 3,4, 5