Wet Lab 6 - Bony Parts Of The Foot

Question 1

What is the talus ?

Answer 1

Also know as ankle bone, it is an irregularly shaped bone which forms the link between the foot and the leg through the ankle joint.

Question 2

What bony parts make up the talus ?

Answer 2

• trochlea
• head and neck
• sulcus tali

Question 3

What does the trochlea join?

Answer 3

It joins the tibia (the trochlear surface and medial malleolus) and the fibula to from the ankle (talocrucal) joint

Question 4

What does the head of the talus join

Answer 4

It joins the navicular bone

Question 5

What surfaces does the head and the neck of the talus carry ?

Answer 5

Articulate surfaces for calcaneus

Question 6

What does the sulcus tali form?

Answer 6

A groove with the sulcus calcanei to form the tarsal sinus

Question 7

What ligament is within the tarsal sinus ?

Answer 7

Interosseous talocalcaneal ligament

Question 8

What is the calcaneus ?

Answer 8

Also known as the heel bone, it is the largest of the foot bones that sits just below the talus.

Question 9

What 2 bones does the calcaneus articulate with ?

Answer 9

• the talus
• cuboid bone

Question 10

What joint does the calcaneus form by articulating with the talus

Answer 10

Subtalar joint

Question 11

What joint does the calcaneus form by articulating with the cuboid bone?

Answer 11

Calcaneocuboid joint

Question 12

What bones parts make up the calcaneus ?

Answer 12

• posterior surface
• anterior process
• medial and lateral processes
• sustentaculum tali
• sulcus calcanei

Question 13

What attaches to the posterior surface?

Answer 13

Calcaneal tendon and the tendon of Plantaris

Question 14

What does the anterior process join ?

Answer 14

The cuboid

Question 15

What presses on the medial and lateral processes ?

Answer 15

The ground - they bear weight at your heel

Question 16

What does the sustentaculum tali do?

Answer 16

It helps hold up the talus

Question 17

What tendon does the sustentaculum tali have a groove under it for?

Answer 17

Flexor hallucis longus

Question 18

What does the sulcus calcanei form a groove with ?

Answer 18

It forms a groove with the sulcus tali to form the tarsal sinus

Question 19

What ligament is within the tarsal sinus ?

Answer 19

Interosseous talocalcaneal ligament

Question 20

What is the sulcus calcanei a groove for?

Answer 20

It’s a groove for flexor hallucis longus

Question 21

What surfaces are found on the sulcus calcanei ?

Answer 21

3 articulate surfaces for the talus

Question 22

What is the navicular bone ?

Answer 22

an intermediate bone interposed between the distal and proximal row on the medial side

Question 23

What is the role of the navicular bone ?

Answer 23

has an important role in the maintenance of the medial longitundinal arch of the foot

Question 24

What inserts onto the tuberosity of the navicular bone?

Answer 24

Part of the Tibialis posterior

Question 25

What is the cuboid bone ?

Answer 25

a short bone in the lateral part of the foot, located on the distal row of the tarsal bones.

Question 26

What four bones of the foot does the cuboid articulate ?

Answer 26

the calcaneus posteriorly
the lateral cuneiform medially
the fourth metatarsal anteromedially
the fifth metatarsal anterolaterally

Question 27

What is the cuboid groove for?

Answer 27

The tendon of Fibularis longus

Question 28

What are cuneiform bones?

Answer 28

a set of three bones in the medial side of the foot that articulate with the navicular proximally and with the proximal surfaces of metatarsal 1-3 distally

Question 29

What are the 3 cuneiforms ?

Answer 29

• medial cuneiform
• intermediate cuneiform
• lateral cuneiform

Question 30

What are metatarsal bones?

Answer 30

a group of five long bones located in the metatarsus of the foot, between the tarsal bones (near the ankle) and the phalanges (toe bones)

Question 31

Where is the base of the metatarsals?

Answer 31

At the proximal end of the bone

Question 32

What does the metatarsal bases join?

Answer 32

The cuboid and cuneiforms

Question 33

Which metatarsal base projects more proximally than the others ?

Answer 33

The 2nd

Question 34

Where is the head of the metatarsals?

Answer 34

At the distal end of the bone

Question 35

What does the metatarsal head join?

Answer 35

The proximal phalanx to form the MTP (metatarsophalangeal) joint

Question 36

What inserts onto the styloid process of the 5th metatarsal ?

Answer 36

Fibularis brevis and Fibularis tertius inserts just distal to it

Question 37

What are phalanges of the foot?

Answer 37

They are long bones in the foot located distal to the metatarsals. Like in the hand, each toe consists of three phalanges, which are named the proximal, middle and distal phalanges.

Question 38

What do the phalanges consist of?

Answer 38

consists of a proximal base, a shaft and a distal head