Foot Muscles Origins and Insertions Flashcards
Abductor Hallucis
O: Medial calcaneus
I: Base of 1st proximal phalanx
A: ABD MTP 1, Flex MTP 1
Inner: Medial plantar nerve
Flexor Hallucis Brevis (med head)
O: medial cuneiform
I: Base of 1st proximal phalanx
A: Flex MTP 1
Inner: Medial plantar nerve
Flexor Hallucis Brevis (lat head)
O: Intermediate cuneiform
I: Base of 1st proximal phalanx
A: Flex MTP 1
Inner: Lateral plantar nerve
Adductor Hallucis (oblique head)
O: Base MT’s 2-4, Cuboid, Lateral cuneiform
I: Base of 1st proximal phalanx
A: Add MTP 1, Flex MTP 1
Inner: Lateral Plantar nerve
Adductor Hallucis (transverse head)
O: Deep transverse MT ligament, MTP 3-5
I: Base of 1st proximal phalanx
A: Add MTP 1, Support tranverse arch
Inner: Lateral plantar nerve
Abductor Digiti Minimi
O: Lateral calcaneal tuberosity
I: Base of 5th proximal phalanx
A: ABD MTP 5, Flex MTP 5
Inner: Lateral plantar nerve
Flexor Digiti Minimi
O: Base of 5th MT
I: Base of 5th proximal phalanx
A: flex MTP 5
Inner: Lateral Plantar Nerve
Flexor Digitorum Brevis
O: Calcaneal tuberosity
I: Middle phalanges 2-5
A: Flex MTP 2-5, Flex PIP 2-5
Inner: Medial plantar nerve
Quadratus Plantae
O: Calcaneal tuberosity
I: Lateral border of FDL tendon
A: redirects and augments pull of FDL
Inner: Lateral plantar nerve
Lumbricals (1-4)
O: Medial border FDL tendons
I: Dorsal aponeuroses 2-5
A: flex MTP 2-5, Ext IP 2-5, ADD, MTP 3-5, Abd MTP 2
Inner: 1st lumbrical (medial plantar n), Lumbricals 2-4 (Lateral plantar nerve)
Plantar Interossei (1-3)
O: Medial border of MT 3-5
I: medial base of proximal phalages 3-5
A: ADD MTP 3-5
Inner: Lateral plantar nerve
Dorsal Interossei
O: Two heads from opposing sides of MT 1-5
I: First interosseus (medial base of 2nd proximal phalanx), 2-4 interossei (Lateral base of proximal phalanges 2-4)
A: ABD MTP 2-4
Inner: Lateral plantar nerve
