Muscle Chart from Tibia and inferior

Question 1

tibialis anterior

Answer 1

origin: Lateral tibia, interosseous membrane
insertion: Medial cuneiform
Action: Dorsiflex ankle, invert ankle
Innervation: Deep fibular nerve (off common peroneal)

Question 2

Extensor Digitorum Longus

Answer 2

origin: Anterior Fibula/Lateral Tibial Condyle/ IO membrane
insertion: Base of middle and distal phalanges 2-5

Action: DF ankle, Evert IT, Ext MTP/Interphalangeal

Innervation: Deep fibular nerve ( off common peroneal)

Question 3

Extensor hallucis longus

Answer 3

origin: Medial Fibula, IO membrane
Insertion: Base of 1st distal phalanx
Action: DF ankle, Evert/Invert IT, EXT MTP/IP 1
Innervation: Deep Fibular Nerve

Question 4

Peroneus Longus

Answer 4

Origin: Proximal Lateral Fibula/Head of Fibula
Insertion: Medial Cuneiform, Base of 1st Metatasral
Action: Plantarflexion ankle, Evert IT
Innervation: Superficial fibular nerve ( off common peroneal)

Question 5

Peroneus brevis

Answer 5

Origin: Distal Lateral Fibula, IO membrane
Insertion: Tuberosity of 5th MT
Action: PF ankle, Evert IT
Innervation: Superivial fibular nerve ( off common peroneal)

Question 6

Peroneus Tertius

Answer 6

Origin: Distal anterior fibula with EDL
Insertion: Dorsal border of 5th M%
Action: DF ankle, Evert IT
innervation: Deep fibular nerve

Question 7

Soleus

Answer 7

Origin: Soleal line of tibia, Head and neck of fibula
Insertion: Calcaneal tuberosity via achilles tendon
Action: PF ankle, Invert iT
innervation: Tibial nerve

Question 8

Gastrocnemius

Answer 8

Origin: Medial and lateral epicondyle femur
Insertion: Calcaneal tuberosity via achilles tendon
Action: PF ankle, Invert IT, Flex knee
innervation: Tibial nerve

Question 9

Plantaris

Answer 9

Origin: Lateral epicondyle femur
insertion: Calcaneal tuberosity via achilles tendon
action: Small contributor PF ankle, Invert IT, flex knee
Innervation: Tibial nerve

Question 10

Tibialis Posterior

Answer 10

Origin: Proximal Posterior tibia, IO membrane, Posterior fibula
Insertion: Navicular, medial, lateral and intermediate cuneiforms base of MT 2-4
Action: PF ankle, Invert IT
Innervation: Tibial Nerve

Question 11

Flexor Digitorum Longus

Answer 11

Origin: Middle posterior tibia
insertion: Base of distal phalanges 2-5
Action: PF ankle, Invert IT, Flex MTP, Flex IP 2-5
innervation: Tibial nerve

Question 12

Flexor Hallucis Longus

Answer 12

Origin: Distal posterior Fibula
Insertion: Base of 1st phalanx
Action: PF ankle, Invert IT, Flex MTP 1, Flex IP 1
Innervation: Tibial nerve

Question 13

Ext Digitorum Brevis

Answer 13

Origin: Dorsal Surface calcaneus
Insertion: Base of middle phalange 2-4
action: Ext MTP 2-4, Ext proximal interphalangeal 2-4
innervation: Deep fibular nerve ( off of common peroneal)

Question 14

Ext. Hallucis brevis

Answer 14

Origin: Dorsal Surface Calcaneus
Insertion: base of 1st proximal phalanx
action: EXT MTP 1
innervation: deep fibular nerve ( off of common peroneal)

Question 15

Abductor hallucis

Answer 15

Origin: Medial Calcaneus
Insertion: Base of 1st proximal phalanx
Action: Abd MTP 1, Flex MTP 1
innervation: Medial plantar nerve (off tibial nerve)

Question 16

Flexor hallucis brevis (medial head)

Answer 16

Origin: Medial cuneiform

insertion: Base of 1st proximal phalanx
action: flex MTP 1
innervation: medial plantar nerve (off tibial nerve)

Question 17

Flexor hallucis brevis (lateral head)

Answer 17

Origin: intermediate cuneiform

insertion: Base of 1st proximal phalanx
action: Flex MTP 1
innervation: Lateral plantar nerve (off tibial nerve)

Question 18

Adductor Hallucis (oblique head)

Answer 18

Origin: Base of MTs 2-4, Cuboid, Lateral cuneiform
insertion: Base of 1st proximal phalanx
Action: Add MTP 1, Flex MTP 1
innervation: Lateral Plantar nerve ( off tibial nerve)

Question 19

Adductor Hallucis (transverse head)

Answer 19

Origin: Deep transverse MT ligament MTP 3-5
Insertion: Base of 1st proximal phalanx
action: Add MTP 1, support transverse arch
innervation: Lateral plantar nerve ( off tibial nerve)

Question 20

Abductor Digiti minimi

Answer 20

Origin: Lateral calcaneal tuberosity

insertion: Base of 5th proximal phalanx
action: Abd MTP 5, Flex MTP 5
innervation: Lateral plantar nerve (off tibial nerve)

Question 21

Flexor Digiti minimi

Answer 21

Origin: Base of 5th MT

insertion: Base of 5th proximal phalanx
action: Flex MTP 5
innervation: Lateral plantar nerve ( off tibial nerve)

Question 22

Flexor digitorum Brevis

Answer 22

Origin: Calcaneal tuberosity

insertion: Middle Phalanges 2-5
action: Flex MTP 2-5, Flex PIP 2-5
innervation: Medial plantar nerve (off tibial)

Question 23

Quadratus Femoris

Answer 23

Origin: Calcaneal Tuberosity

insertion: Lateral border of FDL tendon
action: Redirects and augments pull of FDL
innervation: Lateral plantar nerve ( off tibial)

Question 24

Lumbricals (1-4)

Answer 24

origin: medial border of FDL tendons
insertion: Dorsal aponeuroses 2-5
action: Flex MTP 2-5, Ext IP 2-5, ADD MTP 3-5, Abd MTP 2
innervation: 1st lumbrical: medial plantar (tibial) 2-4: lateral plantar (tibial)

Question 25

Plantar interossei (1-3)

Answer 25

Origin: Medial border of MT 3-5

insertion: medial base of proximal phalanges 3-5
action: ADD MTP 3-5
innervation: Lateral plantar nerve

Question 26

Dorssal interossei (1-4)

Answer 26

Origin: two heads from opposing sides of MT 1-5
insertion: 1st: medial base of 2nd proximal phalanx
2-4: lateral base of proximal phalanges 2-4
action: Abd MTP 2-4
innervation: Lateral plantar nerve