foot AOIN

Question 1

Extensor Digitorum Brevis

Answer 1

A: extend 2-4th at MTP and IPs
O: dorsal surface of calcaneus
I: EDL tendons of 2-4
N: deep fibular nerve L5,S1

Question 2

Extensor Hallucis Brevis

Answer 2

A: extend the first toe at MTP
O: dorsal surface of calcaneus
I: proximal phalanx of first toe
N: deep fibular nerve L5,S1

Question 3

Abductor Hallucis

Answer 3

A: abduct the first toe at MTP
O: medial process of calcaneus and plantar aponeurosis
I: proximal phalanx of first toe and medial sesamoid bone
N: tibial L4,5,S1

Question 4

Abductor Digiti Minimi

Answer 4

A: flex the fifth toe, assist to abduct the fifth toe at MTP
O: lateral process of calcaneus and plantar aponeurosis
I: proximal phalanx of fifth toe (lateral surface)
N: tibial S1,2

Question 5

Flexor Digitorum Brevis

Answer 5

A: flexes 2-5 toes at MTP and PIP
O: medial process of calcaneus and plantar aponeurosis
I: middle phalanges of 2-5 toes
N: tibial nerve L4,5,S1

Question 6

Flexor Hallucis Brevis

Answer 6

A: flex the 1st digit at MTP
O: plantar surface of cuboid and lateral cuneiform
I: medial and lateral surface of proximal phalanx
N: tibial nerve L4,5,S1

Question 7

Adductor Hallucis

Answer 7

A: adduct the first toe, assist to maintain transverse arch of foot, assist to flex first toeO: oblique head - bases of 2-4 MTs
: transverse head - plantar lig of 2-5 MTPs
I: lateral surface of base of first toe
N: tibial S1,2

Question 8

Flexor Digiti Minimi Brevis

Answer 8

A: flex fifth toe at MTP
O: base of 5th MT
I: base of proximal phalanx of 5th toe
N: tibial S1,2

Question 9

Quadratus Plantae

Answer 9

A: assist FDL to flex 2-5 toes
O: medial and lateral sides of plantar surface of calcaneus
I: posterior, lateral aspect of FDL tendon
N: tibial S1,2

Question 10

Plantar Interossei

Answer 10

A: adduct and flex 3-5 toes at MTP
O: medial surfaces of 3-5 MTs
I: medial surfaces of proximal phalanges of 3-5 toes
N: tibial S1,2

Question 11

Dorsal Interossei

Answer 11

A: abduct and flex 2-4 toes at MTPO: adjacent surfaces of all MTsI: first - medial surface of proximal phalanx of 2nd toe
: 2-4 - lateral surfaces of proximal phalanges of 2-4 toes
N: tibial S1,2

Question 12

Lumbricals of the Foot

Answer 12

A: flex proximal phalanges of 2-5 toes at MTP, extend the middle and distal phalanges of 2-5 toes at IPO: tendons of FDLI: bases of proximal phalanges of 2-5 toes and EDL tendonsN: first - tibial L4,5,S1
: 2-4 - tibial L4,5,S1,2