Muscles of ankle and foot Flashcards
The tibial nerve is found in these three muscles:
Gastrocnemius
Soleus
Plantaris
These three muscles are part of the superficial posterior group
Gastrocnemius
Soleus
Plantaris
The Gastrocs, soleus and plantaris have this nerve root in common
Tibial nerve
Gastrocnemius and soleus have these NRs
S1, S2
Origin of the Soleus
Posterior tibia and fibula
O of Plantaris
Posterior lateral condyle of femur
NR of plantaris
L4, L5, S1
Deep posterior group
Tibialis Posterior
Flexor Hallucis Longus
Flexor Digitorum Longus
Tom, Dick & Harry
Tibialis Posterior
Flexor Hallucis Longus (FHL)
Flexor Digitorum Longus (FDL)
The deep posterior group and the superficial posterior group have this N in common
Tibial Nerve
Name six muscles with the Tibial nerve
Tibialis Posterior Flexor Hallucis Longus Flexor Digitorum Longus Gastrocnemius Soleus Plantaris
O, I for Tibialis Posterior
O: Interosseous membrane, adjacent tibia and fibula
I: Navicular and metatarsals
O & I for Flexor Hallucis Longus
O: Posterior fibula and interosseous membrane
I: Distal phalanx of the great toe
NR for Tibialis Posterior
NR: L5, S1
NR for Flexor Hallucis Longus
NR: L5, S1, S2
O & I for Flexor Digitorum Longus
O: Posterior Tibia
I: Distal phalanx of four lesser toes
NR of FDL
NR: L5, S1
The tendons that go over medial ankle like a braided rope from superior to inferior as they cross the ankle
Tibialis posterior
Flexor digitorum longus
Flexor hallucis longus
These three muscles belong to the anterior group
Tibialis Anterior
Extensor Hallucis Longus (EHL)
Extensor Digitorum Longus (EDL)
O, I for Tibialis Anterior
O: Lateral tibia and interosseous membrane
I: First cuneiform and first metatarsal
N for Tibialis Anterior, EHL, EDL
Deep peroneal nerve
The NR of the anterior and lateral group are:
NR: L4, L5, S1
A of Tibialis anterior
Dorsiflexion, ankle inversion
O, I for EHL
O: Fibula and interosseous membrane
I: Distal phalanx of great toe
A for EHL
A: Extends first toe; assists in ankle inversion and dorsiflexion
O & I for EDL
O: Fibula, interosseus membrane, tibia
I: Distal phalanx of four lesser toes
A of EDL
A: Extends four lesser toes, assists in ankle dorsiflexion
O & I for Fibularis Longus
O: Lateral proximal fibula and interosseus membrane
I: Plantar surface of first cuneiform and metatarsal
A of Fibularis Longus
Ankle eversion; assists in ankle plantar flexion
O & I Fibularis Brevis
O: Lateral distal fibula
I: Base of 5th metatarsal
A of Fibularis Brevis
A: Ankle eversion; assists in ankle plantar flexion
O & I Fibularis Tertius
O: Distal medial fibula
I: Base of 5th metatarsal
A of Fibularis Tertius
A: Assists somewhat in ankle eversion and dorsiflexion
Performs Plantar flexion
Gastrocnemius
Soleus
Performs Dorsiflexion
Tibialis anterior
Performs Inversion
Tibialis anterior, tibialis posterior
Performs Eversion
Peroneus longus, fibularis brevis
Flexor of 2nd - 5th toes
Flexor digitorum longus
Lexion of 1st toe
Flexor hallucis longus
Extensor of 2nd - 5th toes
Extensor digitorum longus
Extensor of 1st toe
Extensor hallucis longus
No prime mover action
Plantaris
Fibularous (Peroneus) tertius
Name the two intrinsic dorsal muscles
Extensor hallucis brevis
Extensor digitorum brevis
There are how many layers in the intrinsic foot muscles and which is deepest?
Four
fourth
Muscles of the first layer of intrinsic foot muscles
Abductor hallucis
Flexor digitorum brevis
Abductor digiti minimi
Muscles of 2nd layer
Quadratus plantae
Lumbricales
Muscles of 3rd layer of intrinsic foot
Flexor hallucis brevis
Adductor hallucis
Flexor digit minimi
Muscles of 4th intrinsic layer of foot
Dorsal interossei
Plantar interossei
A of Extensor digitorum brevis
Extends PIP joints of digits 2-4
A of Extensor hallucis brevis
Extends PI joint of first digit
What intrinsic muscles are on the dorsal surface of the foot
Extensor digitorum brevis Extensor hallucis brevis & 4th layer: Dorsal interossei Plantar interossei
NR____through____innervates foot intrinsics
L4 through S2
These muscles of leg and foot innervated by S1, S2
Gastrocnemius Soleus Lumbricales (lateral 3) Abductor digiti minimi Quadratus plantae Adductor hallucis Flexor digiti minimi Dorsal interossei Plantar interossei
These muscles innervated by L4, L5, S1
Plantaris Peroneus Longus Peroneus Brevis Peroneus Tertius Extensor Digitorum Longus Extensor hallucis longus Tibialis anterior Flexor hallucis brevis
These muscles of leg and foot innervated by L5, S1
Tibialis Posterior
Flexor Digitorum longus
Extensor digitorum brevis
These muscles innervated by L5, S1. S2
Flexor hallucis longus
These foot and leg muscles innervated by L4, L5
Abductor hallucis
Flexor digitorum brevis
Lumbricales (medial 1)