Leg Muscles

Question 1

Gastrocnemius

Answer 1

O - Femur (post condyles)

I - Calcaneus via the Achilles’ tendon

A - Plantarflexion (PF) at the ankle;
assists F at the knee

Question 2

Soleus

Answer 2

O- Posterior upper fibula
- posterior middle tibia
- interosseous membrane

I- calcaneus via achilles’ tedon

A- PF at ankle

Question 3

Tibialis posterior

Answer 3

O - Posterior tibia
- posterior fibula
- interosseous membrane

I - plantar surface of several metatarsals and tarsals

A - invert (INV) the foot
- assist in PF at ankle

Question 4

Tibialis anterior

Answer 4

O - proximal, lateral tibia;
- interosseous membrane

I - plantar surface of metatarsal 1 and a tarsal (med. cuneiform)

A - INV the foot
- dorsiflex (DF) at ankle

Question 5

Fibularis Longus (peroneus longus)

Answer 5

O - lateral head of the fibula

I - plantar surface of metatarsal 1 and medial cuneiform tarsal

A - Evert (EV) the food;
- assist in PF at ankle

Question 6

Fibularis brevis (peroneus brevis)

Answer 6

O - lateral distal 1/2 of the fibula

I - base of metatarsal 5

A - EV the foot
- assist PF at ankle

Question 7

Flexor digitorum longus

Answer 7

O - Middle posterior tibia

I - toes 2-5 - plantar surface

A - flex toes 2-5
assist invert the foot
assist PF of ankle

Question 8

Flexor hallucis longus

Answer 8

O - posterior distal fibula
- interosseous membrane

I - hallux

A - F toes 1
- assist INV of foot
-assist PF at ankle

Question 9

Extensor digitorum longus

Answer 9

O - Lateral proximal tibia
anterior proximal fibula
interosseous membrane

I - dorsal side of toes 2-5

A - E Toes 2-5
DF at ankle

Question 10

Extensor hallucis longus

Answer 10

O - anterior middle fibula
interosseous membrane

I - dorsal surface of big toe

A - E toe 1/big toe
assist DF at ankle