Lecture 11: Foot Flashcards Preview

04. MSK Exam 2 Final > Lecture 11: Foot > Flashcards

Flashcards in Lecture 11: Foot Deck (79)
Loading flashcards...
1

Medial Longitudinal Arch

What bones make up this arch?

  • Calcaneus
  • Talus
  • Navicular
  • All three cuneiforms
  • First three metatarsal bones
  • First three proximal, medial, and distal phalanges 

2

Lateral Longitudinal Arch

What bones make up this arch?

  • Calcaneus
  • Cuboid
  • 4th and 5th metatarsal bones
  • 4th and 5th proximal, medial, and distal phalanges 

3

Transverse Arch

What bones make up this arch?

  • Cuboid
  • All 3 Cuneiforms 
  • Metatarsal Bases 

4

Which arch of the foot comes in closest contact with the ground?

The lateral arch

5

What are the four places weight is transferred on the foot during walking?

Calcaneus

Tuberosity of the fifth metatarsal

Head of the first metatarsal

Distal phalanx of the great toe

6

Where is the ideal site of amputation of the foot, allowing the patient to still heel strike, and not lose the height of the limb?

The transverse tarsometatarsal joint

7

What two structures emerge from the inferior border of the extensor retinaculum?

Dorsalis Pedis Artery

Deep Fibular Nerve

8

What is the function of the plantar aponeurosis?

The Plantar Aponeurosis is dense connective tissue has five slips which run concurrently with the tendinous sheaths of the foot and helps them slide fluidly

 

The Plantar Aponeurosis is also a critically important passive support for the arches of the foot

9

What is Plantar Fasciiitis?

Inflammation of plantar fascia, especially at proximal attachment

10

What can cause a calcaneal bone spur?

The arch of the foot sags and the calcaneus slides in a bursa that is just underneath the Plantar Aponeurosis.

This can cause inflammation of that bursa, which can then lead to overgrowth of bone and a bone spur

11

What muscles are found on the dorsal side of the foot?

  • Extensor Hallucis Brevis
  • Extensor Digitorum Brevis 

12

Extensor Hallucis Brevis Muscle

What is its attachments?

Origin: Superolateral aspect of the Calcaneus and interosseous talocalcaneal ligament

Insertion: Dorsal aspect of base of 1st proximal phalanx

13

Extensor Hallucis Brevis Muscle

What is its action?

Extend big toe at metatarsophalangeal joint (MTP)

14

Extensor Hallucis Brevis Muscle

What is its innervation and blood supply?

Innervation: Deep Fibular Nerve

Blood Supply: Dorsalis Pedis Artery

15

Extensor Digitorum Brevis Muscle

What are its attachments?

Origin: Superolateral aspect of the Calcaneus and interosseous talocalcaneal ligament

Insertion: Lateral aspect Extensor Digitorum Longus Tendon

16

Extensor Digitorum Brevis Muscle

What is its action?

Extend digits 2-4

17

Extensor Digitorum Brevis Muscle

What is its innervation and blood supply?

Innervation: Deep Fibular Nerve

Blood Supply: Dorsalis Pedis Artery

18

What muscles are found in the first plantar layer?

  • Abductor Digiti Minimi Muscle
  • Flexor Digitorum Brevis Muscle
  • Abductor Hallucis Muscle

19

Abductor Hallucis Muscle

What is its attachments?

Origin: Medial tubercle; calcaneal tuberosity

Insertion: Medial aspect of base of 1st proximal phalanx

20

Abductor Hallucis Muscle

What is its action?

1. Abduct big toe

2. Flex big toe

21

Abductor Hallucis Muscle

What is its innervation and blood supply?

Innervation: Medial Plantar Nerve

Blood Supply: Medial Plantar Artery

22

Flexor Digitorum Brevis Muscle

What are its attachments?

Origin: Medial tubercle; calcaneal tuberosity

Insertion: Intermediate phalanges 2nd-5th digits

23

Flexor Digitorum Brevis Muscle

What is its action?

Flex digits 2-5

24

Flexor Digitorum Brevis Muscle

What is its innervation and blood supply?

Innervation: Medial Plantar Nerve

Blood Supply: Medial Plantar Artery

25

The flexor digitorum longus tendon runs through a split in the insertion of what muscle's tendon?

Flexor digitorum brevis

26

Abductor Digiti Minimi Muscle

What is its attachments?

Origin: Calcaneal tuberosity

Insertion: Lateral aspect of base of 5th proximal phalanx

27

Abductor Digiti Minimi Muscle

What is its action?

1. Abduct 5th toe

2. Flex 5th toe

28

Abductor Digiti Minimi Muscle

What is its innervation and blood supply?

Innervation: Lateral Plantar Nerve

Blood Supply: Lateral Plantar Artery

29

What muscles are found in the second plantar layer?

  • Quadratus Plantae
  • Lumbricals
  • Tendons of Flexor Hallucis Longus and Flexor Digitorum Longus are also found in this layer

30

Quadratus Plantae Muscle

What is its attachments?

Origin: Plantar surface calcaneus

Insertion: Lateral aspect of Flexor Digitorum Longus Tendon