1st layer
Flexor Digitorum Brevis
ORIGIN: Medial process of the tuberosity of the calcaneous.
INSERTION: Medial phalanx of the 2nd through 5th digits
ACTION: Flexes the proximal interphalangeal joints
Abductor Hallucis
ORIGIN: Medial process
of tuberosity of the calcaneous.
INSERTION: Medial side of the base of
the proximal phalanx of the great toe.
ACTION: Abducts and assists in
flexion of the metatrsalphalangeal joint of the great toe.
Abductor Hallucis
ORIGIN: Medial process of tuberosity of the
calcaneous.
INSERTION: Medial side of the base of the proximal phalanx of
the great toe.
ACTION: Abducts and assists in flexion of the
metatrsalphalangeal joint of the great toe.
ORIGIN: Medial process of the tuberosity of the calcaneous.
INSERTION: Medial phalanx of the 2nd through 5th digits
ACTION: Flexes the proximal interphalangeal joints
Abductor Hallucis
ORIGIN: Medial process
of tuberosity of the calcaneous.
INSERTION: Medial side of the base of
the proximal phalanx of the great toe.
ACTION: Abducts and assists in
flexion of the metatrsalphalangeal joint of the great toe.
Abductor Hallucis
ORIGIN: Medial process of tuberosity of the
calcaneous.
INSERTION: Medial side of the base of the proximal phalanx of
the great toe.
ACTION: Abducts and assists in flexion of the
metatrsalphalangeal joint of the great toe.
2nd Layer
lumbrical
origin, tendons of long flexor muscles of
toes;
insertion, extensor tendons of four lateral
toes;
innervation, medial and lateral plantar;
action, flex metatarsophalangeal joints, extend distal phalanges.
QUADRATUS PLANTAE
ORIGIN
Lateral head-tuberosity of calcaneus, medial head-medial side of
calcaneus
INSERTION
Lateral border
long flexor tendons
ACTION
Flexes toes
origin, tendons of long flexor muscles of
toes;
insertion, extensor tendons of four lateral
toes;
innervation, medial and lateral plantar;
action, flex metatarsophalangeal joints, extend distal phalanges.
QUADRATUS PLANTAE
ORIGIN
Lateral head-tuberosity of calcaneus, medial head-medial side of
calcaneus
INSERTION
Lateral border
long flexor tendons
ACTION
Flexes toes
3rd layer
Flexor Hallucis Brevis
ORIGIN: Medial part of the planter surface of the
cuboid bone.
INSERTION: Medial and lateral sides of the base of the
proximal phalanx of the great toe.
ACTION: Flexes the
Metatarsalphalangeal of the great toe.
Adductor Hallucis
ORIGIN: Bases of the second through fourth metatarsal
bones & the planter suface of the third through fifth
digits.
INSERTION: Lateral side of the base of the proximal phalanx of
the great toe.
ACTION: Adducts and assists in flexing the
metatarsalphalangeal joint of the great toe.
Flexor Digiti Minimi Brevis
ORIGON: Cuboid and base of 5th metatarsal
INSERTION: Base of proximal phalanx of 5th toe
ACTION:Flexion of mp joint(pinky toe)
ORIGIN: Medial part of the planter surface of the
cuboid bone.
INSERTION: Medial and lateral sides of the base of the
proximal phalanx of the great toe.
ACTION: Flexes the
Metatarsalphalangeal of the great toe.
Adductor Hallucis
ORIGIN: Bases of the second through fourth metatarsal
bones & the planter suface of the third through fifth
digits.
INSERTION: Lateral side of the base of the proximal phalanx of
the great toe.
ACTION: Adducts and assists in flexing the
metatarsalphalangeal joint of the great toe.
Flexor Digiti Minimi Brevis
ORIGON: Cuboid and base of 5th metatarsal
INSERTION: Base of proximal phalanx of 5th toe
ACTION:Flexion of mp joint(pinky toe)
4th Layer
DORSAL INTEROSSEI (FOOT)
ORIGIN
Bipennate from inner aspects of shafts of all metatarsals
INSERTION
Bases of
proximal phalanges and dorsal extensor expansions of medial side of 2nd toe and
lateral sides of 2nd , 3rd and 4th toes
ACTION
Abduct 2nd , 3rd and 4th toes from axis of 2nd toe. Assist lumbricals
in extending interphalangeal joints while flexing metatarsal phalangeal joints
PLANTAR INTEROSSEI
ORIGIN
Inferomedial shafts of 3rd , 4th and 5th metatarsals (single
heads)
INSERTION
Medial sides
of bases of proximal phalanges with slips to dorsal extensor expansions of 3rd,
4th and 5th toes
ACTION
Adduct 3rd 4th and 5th toes to axis of 2nd toe, Assist lumbricals in
extending interphalangeal joints while flexing metatarsal phalangeal
joints
ORIGIN
Bipennate from inner aspects of shafts of all metatarsals
INSERTION
Bases of
proximal phalanges and dorsal extensor expansions of medial side of 2nd toe and
lateral sides of 2nd , 3rd and 4th toes
ACTION
Abduct 2nd , 3rd and 4th toes from axis of 2nd toe. Assist lumbricals
in extending interphalangeal joints while flexing metatarsal phalangeal joints
PLANTAR INTEROSSEI
ORIGIN
Inferomedial shafts of 3rd , 4th and 5th metatarsals (single
heads)
INSERTION
Medial sides
of bases of proximal phalanges with slips to dorsal extensor expansions of 3rd,
4th and 5th toes
ACTION
Adduct 3rd 4th and 5th toes to axis of 2nd toe, Assist lumbricals in
extending interphalangeal joints while flexing metatarsal phalangeal
joints