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Intrinsic muscles of the foot -Plantar (1st layer (Flexor digitorum Brevis…
Intrinsic muscles of the foot -Plantar
1st layer
Flexor digitorum Brevis
flexes lateral four digits
medial plantar nerve
Abductor Digiti minimi
abducts and flexes little toe
lateral planar nerve
Abductor hallicus
Abducts and flexes 1st digit
medial plantar nerve
2nd layer
Quadratus plantae
Assists FDL in flexing lateral four digits
lateral plantar nere
Lumbricals
Flex proximal phalanges, extend middle and distal phalanges of lateral four digits
Medial one: medial plantar//Lateral four: lateral plantar
3rd layer
Flexor hallicus brevis
Flexes proximal phalanx of 1st digit
Medial plantar nerve
Adductor hallicus
Adduct 1st digit; assists in transverse arch by metatarsals medially
deep lateral plantar nerve
flexor digiti minimi brevis
Flexes proximal phalanx of 5th digit, assists with flexion
superficial branch of lateral plantar nerve
4th layer
Plantar interossei (three muscles)
adducts digits 3-4 and flex MTP joints
Lateral plantar nerve
Dorsal interossei (four muscles)
Abducts digits 2-4 and flex MTP joint
Lateral plantar nerve