Foot Myology

Question 1

Abductor Hallucis m.

Origin
Insertion
Action
Innervation
Blood Supply

Answer 1

Origin: medial tubercle calcaneal tuberosity
Insertion: medial aspect of base of 1st proximal phalanx
Action: abduct and flex the hallux
Innervation: medial plantar n.
Blood Supply: medial plantar a.

Question 2

Flexor Digitorum Brevis m.

Origin
Insertion
Action
Innervation
Blood Supply

Answer 2

Origin: medial tubercle calcaneal tuberosity
Insertion: intermediate phalanges 2nd-5th digits
Action: flex digits 2-5
Innervation: medial plantar n.
Blood Supply: medial and lateral plantar a.

Question 3

Abductor Digiti Minimi m.

Origin
Insertion
Action
Innervation
Blood Supply

Answer 3

Origin: calcaneal tubersity
Insertion: lateral aspect of base of 5th proximal phalanx
Action: abduct and flex 5ht digit
Innervation: lateral plantar n.
Blood Supply: lateral plantar a.

Question 4

Quadtraus Plantae m.

Origin
Insertion
Action
Innervation
Blood Supply

Answer 4

Origin: plantar surface calcaneus
Insertion: lateral aspect of flexor digitorum longus t.
Action: assist in flexing digits 2-5
Innervation: lateral plantar n.
Blood Supply: lateral plantar a.

Question 5

Lumbrical m.s

Origin
Insertion
Action
Innervation
Blood Supply

Answer 5

Origin: flexor digitorum longus t.
Insertion: medial proximal phalanx of digits 2-5, medial aspects of digital expansion on digits 2-5
Action: flex metatarsophalangeal joint, extend proximal and distal interphalangeal joints
Innervation: 1st: medial plantar n, 2nd-4th: lateral plantar n.
Blood Supply: medial and lateral plantar a

Question 6

Flexor Hallucis Brevis m.

Origin
Insertion
Action
Innervation
Blood Supply

Answer 6

Origin: plantar surface cuboid bone and lateral cuneiform bone
Insertion: base of 1st proximal phalanx
Action: flex 1st proximal phalanx
Innervation: medial plantar n.
Blood Supply: medial plantar a.

Question 7

Flexor Digiti Minimi Brevis m.

Origin
Insertion
Action
Innervation
Blood Supply

Answer 7

Origin: base of 5th metatarsal
Insertion: base of 5th proximal phalanx
Action: flex proximal phalanx of 5th digit
Innervation: superficial lateral plantar n.
Blood Supply: lateral plantar a.

Question 8

Adductor Hallucis m.

Origin
Insertion
Action
Innervation
Blood Supply

Answer 8

Origin: oblique head- bases of 2nd-4th metatarsals, transverse head- plantar metatarsophalangeal l.
Insertion: lateral aspect of base of 1st proximal phalanx
Action: adduct hallux
Innervation: deep lateral plantar n.
Blood Supply: lateral plantar a.

Question 9

Dorsal Interossei m.s

Origin
Insertion
Action
Innervation
Blood Supply

Answer 9

Origin: adjacent edges and bases of 1st-5th metatarsal bones
Insertion: 1st: medial aspect of proximal phalanx, 2nd-4th: lateral aspect of bases of 2nd-4th proximal phalanges
Action: abduct digits 2-4; flex metatarsophalangeal joint
Innervation: lateral plantar n.
Blood Supply: dorsal a.

Question 10

Plantar Interossei m.s

Origin
Insertion
Action
Innervation
Blood Supply

Answer 10

Origin: adjacent edges and bases of 1st-5th metatarsal bones
Insertion: medial aspect bases of 3rd-5th proximal phalanges
Action: adduct digits 3-5; flex metatarsophalangeal joint
Innervation: lateral plantar n.
Blood Supply: plantar a.