Plantar Surface of the Foot

Question 1

Dorsal View of Foot

Answer 1

Question 2

Ventral View of Foot

Answer 2

Question 3

Deep Fascia of Foot

Answer 3

Thick central portion but weaker medially and laterally

Question 4

Plantar aponeurosis

Answer 4

Superficial ligament formed by central portion of the deep fascia

Proximal attachment to Calcaneus. Divides into 5 bands distally - continuous with fibrous digital sheaths.

Vertical intermuscular septae: Medial, Central and Lateral compartments

Question 5

Compartments of the Foot

Muscles of the Dorsum of the Foot (Purple)

Answer 5

Extensor Digitorum Brevis

Extensor Hallucis Brevis

Question 6

Compartments of the Foot

Lateral Compartment (Orange)

Answer 6

Muscles of the little toe:

Abductor Digiti Minimi

Flexor Digiti Minimi Brevis

Question 7

Compartments of the Foot

Central Compartment (Green)

Answer 7

Flexor Digitorum Brevis

Muscles associated with tendon of FDL (lumbricals and quadratus plantae)

Adductor Hallucis

Question 8

Compartments of the Foot

Medial Compartment (Blue)

Answer 8

Muscles of the great toe:

Abductor Hallucis

Flexor Hallucis Brevis

Question 9

Compartments of the Foot

Interossei (Pink)

Answer 9

Plantar and Dorsal Interossei

Question 10

Foot - Layer 1

Abductor Hallucis (1)

Answer 10

Medial Tubercle of Calcaneus and flexor retinaculum to the medial base of the proximal phalynx

Question 11

Foot - Layer 1

Flexor Digitorum Brevis (2)

Answer 11

Medial tubercle of calcaneus to the middle phalanges of the lateral 4 toes

Question 12

Foot - Layer 1

Abductor Digiti Minimi (3)

Answer 12

Tubercle of Calcaneus to the lateral base of the proximal phalynx

Question 13

Foot - Layer 2

Long flexor tendons to the toes

Answer 13

FDL and FHL

Question 14

Foot - Layer 2

Lumbricals (*)

Answer 14

Tendons of FDL to the medial side of the dorsal tendon expansion

Question 15

Foot - Layer 2

Quadratus Plantae (QP)

Answer 15

Medial and lateral surfaces of calcaneus to the lateral side of the FDL tendon

Question 16

Foot - Layers 1 and 2

Answer 16

Question 17

Foot - Layer 3

Flexor Hallucis Brevis

Answer 17

Cuboid and Lateral Cuneiform to both sides of the base of the proximal phalanx

Question 18

Foot - Layer 3

Adductor Hallucis

Answer 18

Transverse head: Plantr ligament of MTP joints

Oblique head: Base metatarsals 2 and 4

Both go to the lateral side of the base of the proximal phalanx

Question 19

Foot - Layer 3

Flexor Digiti Minimi Brevis (*)

Answer 19

Base of the 5th Metatarsal to the base of the proximal phalanx

Question 20

Foot - Layer 4

Plantar Insterossei

Answer 20

3 of them

Bases and medial side of metatarsals 3-5 (unipennate) to the medial side of the proximal phalanx of 3rd-5th digit

PAD - Plantar ADuct

Question 21

Foot - Layer 4

Dorsal Interossei

Answer 21

4

Adjacent sides of metatarsals 1-5 (bipennate) to the 1st on medial side proximal phalanx of the 2nd digit and 2nd-4th on lateral side of proximal phalanx of 2nd-4th digits

DAB - Dorsal ABduct

Question 22

Foot - Layer 4

Tendons

Answer 22

Peroneus Longus (*)

Tibialis Posterior (TP)

Question 23

Foot - Layers 3 and 4

Answer 23

Question 24

Plantar Nerves

What are they?

Answer 24

Terminal branches of Tibial nerve, deep to the flexor retinaculum. They enter the foot deep to Abductor Hallucis.

Question 25

Plantar Nerves Medial Plantar Nerve

Answer 25

Between Abductor Hallucis and FDB

Question 26

Plantar Nerves Lateral Plantar Nerve

Answer 26

Between Layers 1 and 2. Deep and superficial branches. Deep branch between layers 3 and 4.

Question 27

Innervation of the Muscles of the Foot Medial Plantar Nerve

Answer 27

Abuctor Hallucis Flexor Digitorum Brevis 1st Lumbrical Flexor Hallucis Brevis *S2, S3*

Question 28

Innervation of the Muscles of the Foot Lateral Plantar Nerve

Answer 28

Everything that the Medial Plantar Nerve does not innervate ## Footnote *S2, S3*

Question 29

Cutaneous Innervation of the Foot

Answer 29

Question 30

Plantar Arteries What are they?

Answer 30

Terminal branches of the Posterior Tibial artery deep to the flexor retinaculum. They enter the foot deep to Abductor Hallucis.

Question 31

Plantar Arteries Medial Plantar Artery

Answer 31

Muscles of Hallux and overlying skin. Occasionally there is a Superficial plantar arch

Question 32

Plantar Arteries Lateral Plantar Artery

Answer 32

Initially between layers 1 and 2. Deep plantar arch between layers 3 adn 4. Deep plantar artery from dorsalis pedis. Plantar metatarsal and digital artery.