731 Foot Muscles Action

Abductor digiti minimi action

Abducts little toe

Abductor hallucis action

Abducts big toe and maintains medial longitudinal arch

Adductor hallucis action

Adducts big toe and supports transverse arch

Dorsal interossei action

Abducts toes away from 2nd toe; flex MTP joints

Extensor digitorum brevis action

Extend MTP joints of 1-4 digits

Extensor hallucis brevis action

Extend big toe

Flexor digiti minimi brevis action

Flex pinky toe

Flexor digitorum brevis action

Flexes PIP joint of toes 2-5

Flexor hallucis brevis action

Flex big toe

Lumbricals action

Flex MTP and extend IP joints

Plantar interossei action

Adduct 3,4,5 toes towards 2nd toe & assist with flexion at MTP joints

Quadratus plantae action

Assists in toe flexion by straightening the pull of the flexor tendons

Structures in the superficial layer of the foot

Plantar fascia

Structures in the 1st layer in the foot

Abductor hallucis, abductor digiti minimi, flexor digitorum brevis

Structures in the 2nd layer in the foot

Quadratus plantae & Lumbricals, tendons of the flexor digitorum longus & flexor hallucis longus

Structures in the 3rd layer in the foot

Flexor hallucis brevis, adductor hallucis, flexor digiti minimi brevis

Structures in the 4th layer in the foot

Plantar & dorsal interossei, tendons of the Tibialis posterior and Fibularis longus

extensor digitorum brevis action

extend toes

extensor hallucis brevis action

extend big toe