FDN Level 2: Foot

Muscle Chart

Extensor Digitorum Brevis

O: Superolateral calcaneus

I: Lateral sides of tendons of EDL 2-4

N: deep fibular

A: extension of toes 2-4

Extensor Hallucis Brevis

O: superolateral surface calcaneus

I: base of prox phalanx great toe

N: deep fibular nerve

A: extend great toe

First Dorsal Interossei

O: sides of 1st and 2nd MT

I: Base of prox phalanx of 2nd toe

N: Lateral plantar

A: abduct the 2nd toe

Dorsal 2-4 Interossei

O: adjacent metatarsals of toes 3-4

I: base of the prox phalanx of toes 3-5

N: lateral plantar

A: abduct the toes 3-5 away from 2nd (midline)

Plantar Interossei

O: sides of adjacent metatarsals

I: base of prox phalanges of toes 2-4

N: Lateral plantar

A: adduct toes

Abductor Hallucis

O: medial process of calcaneal tuberosity

I: Medial base of prox phalanx of great toe

N: Medial plantar

A: abd and flex great toe

Flexor Hallucis Brevis

O: plantar cuboid and lateral cuneiform

I: lateral and medial base of prox phalanx great toe

N: medial plantar nerve

A: flex great toe

Adductor Hallucis

(Transverse) O: MTP joints of toes 3,4,5

(Oblique) O: base of 2,3,4th MT

I: Lateral side of base of prox phalanx great toe

N: Lateral plantar nerve

A: adduct great toe

Flexor Digitorum Brevis

O: calcaneal tuberosity and plantar aponeurosis

I: plantar surface middle phalanges of lateral 4 toes

N: medial plantar nerve

A: flex lateral 4 toes

Quadratus Plantae

(Medial) O: medial calcaneus

(Lateral) O: lateral process calcaneal tuberosity

I: lateral side of tendon of flexor digitorum longus

N: lateral plantar nerve

A: Assist FDL in flexing toes 2-5

Abductor Digiti Minimi

O: lateral and medial processes of calcaneal tuberosity

I: lateral base of prox phalanx of 5th toe

N: lateral plantar

A: abduct 5th toe

Flexor Digiti Minimi Brevis

O: Base of 5th MT

I: base of the prox phalanx of 5th toe

N: lateral plantar

A: flex little toe