Myology of the foot

Question 1

Movements at sub talar joint
INVERSION

Answer 1

❖Tibialis Posterior
❖Tibialis Anterior
❖Flexor Digitorum Longus
❖Flexor Digitorum Brevis
❖Extensor Hallucis Longus

Question 2

Movements at sub talar joint
EVERSION

Answer 2

❖ Peroneus Longus
❖ Peroneus Brevis
❖ Peroneus Tertius
❖ Extensor Digitorum Longus

Question 3

Inversion (ankle)

Answer 3

Tibialis Anterior (anterior)
* Tibialis Posterior (deep posterior)
* Flexor Digitorum Longus (deep posterior)
* Flexor Hallucis Longus (deep posterior)
* Extensor Hallucis Longus (anterior)

Question 4

Eversion

Answer 4

• Peroneus Longus (lateral)
• Peroneus Brevis (lateral)
• Peroneus Tertius (anterior, dorsiflexor)
• Extensor Digitorum Longus (anterior)

Question 5

EVERSION – 3 Peroneal Muscles

Answer 5

Longus Brevis Tertius

Question 6

movement at the toes

EXTENSION

Answer 6

❖Extensor Hallucis Longus
❖Extensor Digitorum Longus

Question 7

Movement at the toes

FLEXION

Answer 7

❖Flexor Digitorum Longus
❖Flexor Hallucis Longus

Question 8

Extension digits 2-5

Answer 8

40 degrees
great toe 70-90

Extensor digitorum longus
◦ Extensor digitorum brevis (2-4 digits)
◦ Lumbricals

Question 9

Flexion digits 2-5

Answer 9

40 degrees
great toe 45 degrees

Flexor digitorum longus
◦ Flexor digitorum brevis
◦ Lumbricals

Question 10

The Lumbricals

Answer 10

intrinsic foot muscles
Origin: tendons of flexor digitorum
longus
Insertion: extensor hoods of proximal
phalanges
Extension at PIP, DIP
Flexion at MTP

Question 11

Movement at toes

ADDUCTION

Answer 11

Adductor Hallucis
❖Lumbricals
❖Plantar Interossei

Question 12

Movement at toes

ABDUCTION

Answer 12

Abductor Hallucis
❖Abductor Digit Minimi
❖Plantar Interossei