Ankle and Foot Region Flashcards

1
Q

What is the sustentaculum tali?

A

a horizontal eminence on the upper and forepart of the medial surface of the calcaneus

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2
Q

The sustentaculum tali supports the head of what bone?

A

talus

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3
Q

The muscle tendon runs through the groove on the inferior surface of the sustentaculum tali?

A

flexor hallucis longus tendon

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4
Q

Describe the navicular bone

A

It is the boat-shaped tarsal bone between the head of talus and cuneiform bones

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5
Q

Which tarsal bone is the most laterally placed?

A

cuboid

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6
Q

What muscle tendon runs through the groove on the lateral side of the cuboid bone?

A

fibularis longus tendon

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7
Q

The cuneiform bones form part of what arches?

A

medial longitudinal and proximal transverse arches

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8
Q

The ankle joint consists of what 3 articulations?

A
  • Inferior surface of distal tibia with talus
  • Medial malleolus of tibia with talus
  • Lateral malleolus of fibula with talus
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9
Q

What type of joint is the ankle joint?

A

Synovial Hinge Joint

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10
Q

What movements occur at the ankle joint?

A

dorsiflexion and plantarflexion

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11
Q

Is the ankle joint more stable when the foot is dorsiflexed or plantarflexed? Why?

A

Joint is more stable when the foot is dorsiflexed because the wider surface of the talus moves into ankle joint . When the foot is plantarflexed the narrow part of the talus is in the joint

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12
Q

The ankle joint is reinforced laterally by what ligament?

A

Lateral ligament of the ankle

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13
Q

The lateral ligament is subdivided into what 3 separate ligaments?

A
  • Anterior talofibular
  • Posterior talofibular
  • Calcaneofibular
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14
Q

The lateral ligament resists what motion?

A
  • Inversion of the foot
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15
Q

Which ligament is often times torn in an ankle sprain?

A

Anterior talofibular

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16
Q

The ankle joint is reinforced medially by what ligament?

A

Medial (Deltoid) Ligament

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17
Q

The medial ligament is subdivided into what 4 separate ligaments?

A
  • Tibionavicular
  • Tibiocalcaneal
  • Anterior tibiotalar
  • Posterior tibiotalar
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18
Q

The medial ligament resists what motion?

A

over eversion of the foot

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19
Q

The medial ligament helps to maintain what arch?

A

medial longitudinal ligament

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20
Q

Would too much pronation of supination stretch the medial ligament?

A

pronation

Because of this it may be weak in females who are more prone to pronation and flat feet

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21
Q

What is the name of the joint whose articulating surfaces are the inferior surface of the talus and the superior surface of the calcaneus?

A

Subtalar (Talocalcaneal) Joint

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22
Q

What type of joint is the subtalar joint?

A

Planar, synovial joint

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23
Q

What motions occur at the subtalar joint?

A

inversion and eversion of foot

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24
Q

What is the name of the joint whose articulating surfaces are the head of the talus and the concave calcaneus and navicular bones?

A

Talocalcaneonavicular

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25
Q

What type of joint is the Talocalcaneonavicular joint?

A

ball and socket

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26
Q

What motions occur at the Talocalcaneonavicular joint?

A

inversion and eversion

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27
Q

What is the name of the joint whose articulating surfaces are the anterior end of the calcaneus and the posterior surface of the cuboid?

A

Calcaneocuboid Joint

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28
Q

What type of joint is the Calcaneocuboid Joint?

A

Planar, synovial joint

29
Q

What motions occur at the calcaneocuboid joint?

A

inversion and eversion

30
Q

What is the name of the joint whose articulating surfaces are the Talonavicular part of talocalcaneonavicular joint and the calcaneocuboid joint?

A

Transverse Talar Joint

31
Q

What are the names of the 3 joints that occur between the navicular bone and the three cuneiform bones?

A

Cuneonavicular Joints

32
Q

What type of joint are the Cuneonavicular Joints?

A

Planar, synovial joints

33
Q

What motions occur at the Cuneonavicular Joints?

A

little motion occurs

34
Q

What is the name of the joints between the cuboid bone, 3 cuneiform bones and the metatarsals?

A

Tarsometatarsal Joints

35
Q

What motions occur at the Tarsometatarsal Joints?

A

Limited gliding or sliding movements

36
Q

What type of joint are the Metatarsophalangeal Joints (MTP)?

A

Condyloid synovial joints

37
Q

What motions occur at the MTP joints?

A

Extension and flexion, some abduction, adduction and circumduction

38
Q

What type of joint are the interphalangeal joints?

A

Hinge synovial joints

39
Q

What motions occur at the interphalangeal joints?

A

flexion and extension

40
Q

What are the attachment points of the long plantar calcaneocuboid ligament?

A

The plantar aspect of the calcaneus to the cuboid and bases of metatarsals

41
Q

The long plantar calcaneocuboid ligament forms a canal for what muscle?

A

fibularis longus muscle

42
Q

The long plantar calcaneocuboid ligament helps maintain what arch?

A

lateral longitudinal arch of foot

43
Q

What are the attachment points of the short plantar calcaneocuboid ligament?

A

Front part of the plantar surface of the calcaneus to the plantar surface of cuboid bone

44
Q

The short plantar calcaneocuboid ligament helps maintain what arch?

A

lateral longitudinal arch of foot

45
Q

What are the articulating surfaces of the plantar calaneonavicular ligament?

A

Sustentaculum tali of calcaneus to navicular bone

46
Q

What are the 2 functions of the plantar calaneonavicular ligament?

A

Supports head of talus and medial longitudinal arch

47
Q

What is the plantar calaneonavicular ligament aka? Why?

A

“Spring” Ligament

Because it contains elastic fibers which give elasticity to the longitudinal arch and spring to foot

48
Q

What are the 3 arches of the foot?

A
  • Medial Longitudinal Arch
  • Lateral Longitudinal Arch
  • Transverse Arch
49
Q

What is the function of the Medial Longitudinal Arch?

A

weight-bearing

50
Q

Which tarsal bone is the keystone to the medial longitudinal arch?

A

talus (particularly the head)

51
Q

Which 2 muscles strengthen the medial longitudinal arch?

A

Tibialis anterior and fibularis longus tendon

52
Q

What is the function of the lateral Longitudinal Arch?

A

Provides balance

53
Q

Between the medial and lateral longitudinal arches with one is higher?

A

The medial longitudinal arch is higher than the lateral. The lateral is the flattest and rests on the ground during standing

54
Q

What 2 muscles help to maintain the curvature of the transverse arch?

A

Fibularis longus and tibialis posterior

55
Q

What is the plantar aponeurosis?

A

Longitudinally arranged bundles of dense fibrous tissue that form the thick, central part of the plantar fascia.

56
Q

Where does the plantar aponeurosis run?

A

From the calcaneal tuberosity forward to the heads of the metatarsal bones

57
Q

What ligaments connect the plantar aponeurosis between the tarsal bones?

A

Superficial transverse metatarsal ligament

58
Q

What are the 2 dorsal intrinsic muscle of the foot?

A
  • Extensor digitorum brevis

- Extensor hallucis brevis

59
Q

How many plantar intrinsic foot muscle layers are there

A

4

60
Q

3 muscles in the first layer of plantar muscles

A
  • Abductor hallucis
  • Abductor digiti minimi
  • Flexor digitorum brevis
61
Q

2 muscles in the second layer of plantar muscles

A
  • Quadratus plantae

- Lumbricales

62
Q

3 muscles in the third layer of plantar muscles

A
  • Flexor hallucis brevis
  • Flexor digiti minimi
  • Adductor halllucis
63
Q

2 muscles in the fourth layer of plantar muscles

A
  • Plantar interossei

- Dorsal interossei

64
Q

All dorsal intrinsic foot muscles are innervated by what nerve?

A

deep fibular nerve

65
Q

Plantar intrinsic foot muscles are innervated by what 2 nerves?

A

the medial and lateral plantar nerves

66
Q

All dorsal intrinsic foot muscles are get their blood supply from what arteries?

A

The dorsalis pedis arteries

67
Q

All plantar intrinsic foot muscles are get their blood supply from what arteries?

A

the medial and lateral plantar arteries

68
Q

What is Plantar Fasciitis?

A

Painfull inflammation of the plantar fascia (aponeurosis)

69
Q

What may cause plantar fasciitis?

A

Constant plantar flexion or standing in one position for too long