INTRINSIC MUSCLES OF THE TOE JOINT

Question 1

EXTENSOR DIGITORUM BREVIS: O,I

Answer 1

O: dorsal surface of calcaneus
I: middle and distal phalanges of toes 2-5 via the EDL tendon and DDE

Question 2

EXTENSOR DIGITORUM BREVIS: A,N

Answer 2

A: extends toes 2-5 at MTP, PIP and DIP
N: deep fibular nerve

Question 3

EXTENSOR HALLICUS BREVIS: O,I

Answer 3

O: dorsal surface of calcaneus
I: dorsal surface of proximal phalanx of big toe

Question 4

EXTENSOR HALLICUS BREVIS: A,N

Answer 4

A: extends big to at MTP joint
N: deep fibular n.

Question 5

ABDUCTOR HALLICUS: O,I

Answer 5

O: calcaneal tuberosity, flexor retinaculum and plantar fascia
I: medial side of the prox phalanx of the big toe

Question 6

ABDUCTOR HALLICUS: A,N

Answer 6

A: ABD big toe at MTP
N: medial plantar n.

Question 7

ABDUCTOR DIGITI MINIMI PEDIS: O,I

Answer 7

O: calcaneal tuberosity and plantar fascia
I: lateral side of the prox phalanx of toe 5

Question 8

ABDUCTOR DIGITI MINIMI PEDIS: A,N

Answer 8

A: ABD toe 5 at the MTP joint
N: lateral plantar n

Question 9

FLEXOR DIGITORUM BREVIS: O,I

Answer 9

O: calcaneal tuberosity and plantar fascia
I: middle phalanges of toes 2-5

Question 10

FLEXOR DIGITORUM BREVIS: A,N

Answer 10

A: flexes toes 2-5 at MTP and PIP
N: medial plantar n

Question 11

QUADRATUS PLANTAE: O,I

Answer 11

O: medial and lateral sides of calcaneus
I: distal tendon of FDL mm

Question 12

QUADRATUS PLANTAE: A,N

Answer 12

A: flexes toes 2-5 at MTP, PIP and DIP
N: lateral plantar n.

Question 13

LUMBRICALS PEDIS: O,I

Answer 13

O:
1. medial border of FDL tendon to toe 2
2. adjacent sides of FDL tendon to toes 2 and 3
3. adjacent sides of FDL tendon to toes 3 and 4
4. adjacent sides of FDL tendon to toes 4 and 5
I: EDL tendon via DDE of toes 2-5

Question 14

LUMBRICALS PEDIS: A,N

Answer 14

A: flexes toes 2-5 at MTP and extend toes 2-5 at PIP and DIP
N: medial and lateral plantar nerves

Question 15

FLEXOR HALLICUS BREVIS: O,I

Answer 15

O: cuboid and 3rd cuneiform
I: plantar surface of prox phalanx of big toe

Question 16

FLEXOR HALLICUS BREVIS: A,N

Answer 16

A: flexes big toe at MTP
N: medial plantar n

Question 17

FLEXOR DIGITI MINIMI PEDIS: O,I

Answer 17

O: plantar surface of 5th MT and fibularis longus tendon
I: plantar surface of prox phalanx of toe 5

Question 18

FLEXOR DIGITI MINIMI PEDIS: A,N

Answer 18

A: flexes toe 5 at MTP
N: lateral plantar n

Question 19

ADDUCTOR HALLUCIS: O,I

Answer 19

O:
OH: MT 2-4 and distal tendon of fib. longus
TH: plantar metatarsophalangeal ligaments
I: lateral side of prox phalanx of big toe

Question 20

ADDUCTOR HALLUCIS: A,N

Answer 20

A: ADD big toe at MTP joint
N: lateral plantar n

Question 21

PLANTAR INTEROSSEI: O,I

Answer 21

O: medial side of MT 3-5 (1:3/2:4/3:5)
I: medial side of prox phalanx of toes 3-5 and DDE (1:3/2:4/3:5)

Question 22

PLANTAR INTEROSSEI: A,N

Answer 22

A: ADD toes 3-5 at MTP joint
N: lateral plantar n

Question 23

DORSAL INTEROSSEI PEDIS: O,I

Answer 23

O: 
1. MT 1 and 2
2. MT 2 and 3
3. MT 3 and 4
4. MT 4 and 5
I:
1. medial side of prox phalanx of toe 2
2. lateral side of prox phalanx of toe 2
3. lateral side of prox phalanx of toe 3
4. lateral side of prox phalanx of toe 4

Question 24

DORSAL INTEROSSEI PEDIS: A,N

Answer 24

A: ABD toes 2-4 at MTP joint
N: lateral plantar n