Muscles of the Foot

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52 terms · Dorsal and Plantar Sides of Muscles

Extensor Digitorum Brevis Origin

Calcaneus

Extensor Digitorum Brevis Insertion

Base of proximal phalanx of hallux and tendons of extensor digitorum longus

Extensor Digitorum Brevis Innervation

Deep Fibular Nerve

Extensor Digitorum Brevis Function

Extend hallux and extend toes 2-4

Abductor Hallucis Origin

Calcaneal tuberosity

Abductor Hallucis Insertion

Medial side of base of proximal phalanx of hallux

Abductor Hallucis Innervation

Medial Plantar nerve

Abductor Hallucis Function

Abduct hallux and flex hallux

Flexor Digitorum Brevis Origin

Calcaneal tuberosity and plantar aponeurosis

Flexor Digitorum Brevis Insertion

Plantar surface of middle phalanges of toes 2-5

Flexor Digitorum Brevis Innervation

Medial Plantar nerve

Flexor Digitorum Brevis Function

flex toes 2-5

Abductor Digiti Minimi Origin

Calcaneal tuberosity and connective tissue between calcareous and metatarsal V

Abductor Digiti Minimi Insertion

Lateral side of base of proximal phalanx of little toe

Abductor Digiti Minimi Innervation

Lateral Plantar nerve

Abductor Digiti Minimi Function

Abducts little toe

Quadratus Plantae Origin

Medial surface of calcaneus and calcaneal tuberosity

Quadratus Plantae Insertion

Tendon of flexor digitorum longs in sole of foot

Quadratus Plantae Innervation

Lateral plantar nerve

Quadratus Plantae Function

Assists flexor digitorum longus tendon in flexing toes 2-5

Lumbricals Origin

First- medial side of tendon of flexor digitorum longs associated with toe 2
2nd- 4th- adjacent surfaces of adjacent tendons of flexor digitorum longus

Lumbricals Insertion

Medial margins of extensor hoods of toes 2-5

Lumbricals Innervation

1- medial plantar nerve
2nd-4th- lateral plantar nerve

Lumbricals Function

Flexion of metatarsophalangeal joint and extension of interphalangeal joints

Flexor Hallucis Brevis Origin

Plantar surface of cuboid and lateral cuneiform and tendon of tibialis posterior

Flexor Hallucis Brevis Insertion

lateral and medial sides of the base of proximal phalanx of hallux

Flexor Hallucis Brevis Innervation

Medial plantar nerve

Flexor Hallucis Brevis Function

Flexes great toe

Adductor Hallucis Origin

Ligaments of metatarsophalangeal joints of toes 1-3, bases of metatarsals 2-4 and sheath covering fibularis longus

Adductor Hallucis Insertion

Lateral side of base of proximal phalanx of hallux

Adductor Hallucis Innervation

Lateral Plantar nerve

Adductor Hallucis Function

Adducts Hallux

Flexor Digiti Minimi Brevis Origin

Base of metatarsal V and tendon sheath of fibularis longus

Flexor Digiti Minimi Brevis Insertion

Lateral side of base of proximal phalanx of little toe

Flexor Digiti Minimi Brevis Innervation

Lateral Plantar nerve

Flexor Digiti Minimi Brevis Function

Flexes little toe

Dorsal Interossei Origin

Sides of adjacent metatarsals

Dorsal Interossei Insertion

extensor hoods and bases of proximal phalanges toes 2-4

Dorsal Interossei Innervation

1-2- Deep Fibular nerve and Lateral plantar nerve
3-4- Lateral plantar nerve

Dorsal Interossei Function

Abducts toes 2-4 and resist extension of metatarsophalangeal joint and flexion of interphalangeal joints

Plantar Interossei Origin

Medial sides of metatarsals 3-5

Plantar Interossei Insertion

Extensor hoods and bases of proximal phalanges toes 3-5

Plantar Interossei Innervation

Lateral Plantar Nerve

Plantar Interossei Function

Adduction of toes 3-5 and resist extension of metatarsophlangeal joint and flexion of interphalangeal joints

What muscles are innervated by the medial plantar nerve?

Abductor Halluxis, flexor digitorum brevis and lumbicals to 1st phalanx

What muscles are innervated by the lateral plantar nerve?

Abductor Digiti Minimi, Lumbricals to 2nd-4th phalanges, Adductor hallucis, flexor digiti minimi brevis, dorsal interossei and plantar interossei

The dorsal interossei to 1-2 phalanges is innervated by what 2 nerves?

Deep Fibular nerve and Lateral plantar nerve

What muscles originate on the calcaneal tuberosity?

Abductor hallucis, flexor digitorum brevis, abductor digiti minimi and quadratus plantae

What muscles insert on the medial side of base of proximal phalanx of hallux?

Abductor hallucis and flexor hallucis brevis

What muscles insert on lateral side of base of proximal phalanx of hallux?

Flexor hallucis brevis and adductor hallucis

What muscles insert on the lateral side of base of proximal phalanx of little toe?

Abductor Digiti Minimi and Flexor Digit Minimi Brevis

What muscles insert onto extensor hoods?

Dorsal Interossei and Plantar Interossei

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