Anterior and lateral leg and foot

Fibularis (peroneus) tertius origin

distal third of anterior surface of fibula and interosseous membrane

Fibularis (peroneus) tertius insertion

dorsum of base of 5th metatarsal

Fibularis (peroneus) tertius innervation

deep fibular nerve

Fibularis (peroneus) tertius main action

dorsiflexes foot at ankle and assists in eversion

Tibialis anterior origin

lateral condyle and proximal hald of lateral tibia; interosseous membrane

Tibialis anterior insertion

medial plantar surface of medial cuneiform and base of 1st metatarsal

Tibialis anterior innervation

deep fibular nerve

Tibialis anterior main action

dorsiflexes foot at ankle and inverts foot

extensor hallucis longus origin

middle part of anterior surface of fibula and interosseous membrane

extensor hallucis longus insertion

dorsal aspect of base of distal phalanx of great toe

extensor hallucis longus innervation

deep fibular nerve

extensor hallucis longus main action

extends great toe, dorsiflexes foot

extensor digitorum brevis and extensor hallucis brevis origin

superolateral surface of calcaneus, lateral talocalcaneal ligament, cruciate ligament

extensor digitorum brevis and extensor hallucis brevis insertion

base of proximal phalanges of great toe and digits 2-4

extensor digitorum brevis and extensor hallucis brevis innervation

deep fibular nerve

extensor digitorum brevis and extensor hallucis brevis main action

aids long extensors of digits, extends digits 2-4 and great toe

extensor digitorum longus origin

lateral condyle of tibia, proximal 3/4 of anterior surface of interosseous membrane, intermuscular septum and fibula

extensor digitorum longus insertion

middle and distal phalanges of lateral four digits

extensor digitorum longus innervation

deep fibular nerve

extensor digitorum longus main action

extends lateral four digits and dorsiflexes foot

fibularis (peroneus) brevis origin

distal 2/3 of lateral surface of fibula

fibularis (peroneus) brevis insertion

dorsal surface of tuberosity of 5th metatarsal

fibularis (peroneus) brevis innervation

superficial fibular nerve

fibularis (peroneus) brevis main action

everts foot and weakly plantarflexes foot at ankle

fibularis (peroneus) longus origin

head and proximal 2/3 of lateral fibula

fibularis (peroneus) longus insertion

plantar base of 1st metatarsal and medial cuneiform

fibularis (peroneus) longus innervation

superficial fibular nerve

fibularis (peroneus) longus main action

everts foot and weakly plantarflexes foot at ankle

Abductor digit minimi origin

medial and lateral tubercles of calcaneus, plantar aponeurosis, and intermuscular septum

Abductor digit minimi insertion

lateral side of base of proximal phalanx of 5th digit

Abductor digiti minimi innervation

lateral plantar nerve

Abductor digit minimi main action

abducts and flexes 5th digit

abductor hallucis origin

medial tubercle of calcaneus, flexor retinaculum, and plantar aponeurosis

abductor hallucis insertion

medial side of base of proximal phalanx of 1st digit

abductor hallucis innervation

medial plantar nerve

abductor hallucis main action

abducts and flexes 1st digit

adductor hallucis origin

oblique head: bases of 2nd-4th metatarsals; transvere head: digits 3-5 metatarsophalangeal joints

adductor hallucis insertion

tendons of both heads to lateral side of base of proximal phalanx of 1st digit

adductor hallucis innervation

deep branch of lateral plantar nerve

adductor hallucis main action

adducts 1st digit, maintains transverse arch of foot

flexor digiti minimi brevis origin

base of 5th metatarsal

flexor digiti minimi brevis insertion

lateral base of proximal phalanx of 5th digit

flexor digiti minimi brevis innervation

lateral plantar nerve

flexor digiti minimi brevis main action

flexes proximal phalanx of 5th digit

flexor digitorum brevis origin

medial tubercle of calcaneus, plantar aponeurosis, intermuscular septa

flexor digitorum brevis insertion

both sides of middle phalanges of lateral four digits

flexor digitorum brevis innervation

medial plantar nerve

flexor digitorum brevis main action

flexes 2nd through 5th digits

flexor hallucis brevis origin

plantar surfaces of cuboid and lateral cuneiform

flexor hallucis brevis insertion

both sides of base of proximal phalanx of great toe

flexor hallucis brevis innervation

medial plantar nerve

flexor hallucis brevis main action

flexes proximal phalanx of great toe

lumbricals origin

tendons of flexor digitorum longus

lumbricals insertion

medial sides of proximal phalanges of digits 2-5

lumbricals innervation

medial plantar nerve (1st); lateral plantar nerve (2-4)

lumbricals main action

flex proximal phalanges and extend interphalangeal joints

dorsal interossei (four muscles) origin

adjacent sides of metatarsals

dorsal interossei (four muscles) insertion

1st: medial side of proximal phalanx of 2nd digit; 2nd-4th: lateral sides of digits 2-4

dorsal interossei (four muscles) innervation

lateral plantar nerve

dorsal interossei (four muscles) main action

abducts 2nd-4th digits, flex metatarsophalangeal joints, extend phalanges

plantar interossei (three muscles) origin

medial sides of metatarsals 3-5

plantar interossei (three muscles) insertion

bases of proximal phalanges of digits 3-5

plantar interossei (three muscles) innervation

lateral plantar nerve

plantar interossei (three muscles) main action

adducts digits 3-5 and flex metatarsophalangeal joints

quadratus plantae origin

medial and lateral sides of plantar surface of calcaneus

quadratus plantae insertion

posterolateral edge of flexor digitorum longus tendon

quadratus plantae innervation

lateral plantar nerve

quadratus plantae main action

assists flexion of lateral four digits by adjusting pull of flexor digitorum longus tendon