Foot Muscles Flashcards
Abductor digiti minimi (foot)
O: Calcaneus
I: 5th proximal phalanx
Action: flexion
Abductor hallucis
O: Calcaneus
I: 1st proximal phalanx
Action: flexion
Adductor hallucis (oblique head)
O: 2nd, 3rd, 4th metatarsal
I: 1st proximal phalanx
Action: flexion
Adductor hallucis (transverse head)
O: 3rd, 4th, 5th metatarsal
I: 1st proximal phalanx
Action: flexion
Dorsal interossei (foot)
O: 1st - 5th metatarsal
I: 2nd - 4th proximal phalanx
Action: slight flexion
Extensor Digitorum brevis
O: calcaneus
I: 2nd - 4th middle phalanx
Action: extension
Extensor hallucis brevis
O: calcaneus
I: 1st proximal phalanx
Action: extension
Fibularis (peroneus) tertius
O: lower part of fibula
I: 5th metatarsal
Action: flexion
Flexor digiti minimi brevis (foot)
O: 5th metatarsal
I: 5th proximal phalanx
Action: flexion
Flexor digitorum brevis
O: calcaneus
I: 2nd-5th middle phalanx
Action: flexion
Flexor hallucis brevis
O: cuboid, lateral cuneiform
I: 2 points on 1st proximal phalanx
Action: flexion lateral pull
Lumbricals
O: flexor digitorum longus
I: 2nd - 5th proximal phalanx
Action: PF
Opponens digiti minimi (foot)
O: 5th metatarsal, fibularis longus
I: 5th metatarsal (distal)
Action: supports
Plantar interossei
O: 3rd - 5th metatarsal
I: 3rd - 5th proximal phalanx
Action: supports
Quadratus plantae (flexor accessorius)
O: calcaneus 2 points
I: flexor digitorum longus
Action: flexion, supports arch
