Foot and Ankle Joints/Ligaments: Part 2 Flashcards

1
Q

Calcaneus structures

A
  • Articular facet for cuboid

- Anterior process of calcaneus

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2
Q

Articular facet for cuboid

A
  • Articulates with cuboid
  • Saddle shaped
  • Concave superior to inferior
  • Convex medial to lateral
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3
Q

Anterior process of calcaneus

A
  • Junction of anterior, superior and lateral surfaces
  • Projects over cuboid
  • Visible on lateral radiograph
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4
Q

Calcaneal pitch

A
  • Superior angulation of calcaneus
  • Long axis directed superiorly and laterally
  • ~ 30 - 35⁰ between long axis of talus and calcaneus
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5
Q

Calcaneocuboid joint

A
  • Between calcaneus and cuboid

- Part of midtarsal joint

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6
Q

Beak of cuboid articulates with

A
  • Coronoid fossa of calcaneus

- Helps stabilize joint during inversion

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7
Q

Calcaneocuboid joint functional classification

A
  • Saddle (sellar) joint

- Diarthrosis

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8
Q

Calcaneoucuboid joint capsule attaches to

A
  • Articular margins
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9
Q

Blood supply to calcaneocuboid joint

A
  • Dorsalis pedis
  • Lateral plantar
  • Perforating fibular
  • Lateral tarsal
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10
Q

Ligaments stabilizing calcaneocuboid joint

A
  • Dorsal (dorsolateral) calcaneocuboid
  • Bifurcate
  • Long plantar (superficial calcaneocuboid)
  • Short plantar (deep calcaneocuboid)
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11
Q

Dorsal (dorsolateral) calcaneocuboid ligament attachment

A
  • Distal dorsal calcaneus

- Proximal dorsolateral aspect of cuboid

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12
Q

Calcaneocuboid bifurcate ligament is made up of

A
  • Dorsal calcaneonavicular ligament

- Calcaneocuboid ligament (dorsomedial calcaneocuboid)

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13
Q

Long plantar ligament (superficial calcaneocuboid)

A
  • Very strong, long ligament
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14
Q

Long plantar ligament (superficial calcaneocuboid) attachments

A
  • Trigonum plantare of calcaneus
  • Tibular ridge of cuboid and plantar aspect of the bases of metatarsals 2-5
  • (Variable, mostly metatarsals 2-4)
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15
Q

Long plantar ligament (superficial calcaneocuboid) function

A
  • Separate origins of quadratus plantae

- Helps maintain lateral longitudinal arch

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16
Q

Long plantar ligament (superficial calcaneocuboid) creates

A
  • Fibular (peroneal) canal by its attachment to fibular ridge (cuboid ridge or crest) and met bases
  • Passageway for fibularis longus tendon
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17
Q

Short plantar ligament (deep calcaneocuboid) attachments

A
  • Calcaneal tubercle (anterior tubercle of calcaneus)

- Cuboid, posterior to fibular ridge including the beak (coronoid process of cuboid)

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18
Q

Short plantar ligament (deep calcaneocuboid) function

A
  • Helps maintain lateral longitudinal arch
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19
Q

Midtarsal joint (Transverse Tarsal Joint, Chopart’s Joint)

A
  • Functional joint

- Calcaneocuboid joint and talonavicular portion of talocalcaneonavicular

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20
Q

Midtarsal joint (Transverse Tarsal Joint, Chopart’s Joint) function

A
  • Triplanar joint

- Pronation and supination

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21
Q

Cyma line

A
  • Line through midtarsal joint

- Undisrupted “S”-shaped curve

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22
Q

3 anatomic joints form 2 that work together

A
  • Posterior talocalcaneal
  • Talocalcaneonavicular
  • Calcaneocuboid
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23
Q

2 joints formed by the 3 anatomic joints (posterior talocalcaneal, talocalcaneonavicular, calcaneocuboid)

A
  • Subtalar (talocalcaneal, talocalcaneonavicular)

- Midtarsal (talonavicular and calcaneocuboid)

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24
Q

Ligaments in the Tarsal Sinus

A
  • Interosseous talocalcaneal ligament
  • Cervical ligament
  • Bifurcate ligament
  • Frondiform ligament
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25
Q

Parts of the frondiform ligament

A
  • Lateral root
  • Intermediate root
  • Medial root (3 components)
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26
Q

Lateral root of frondiform ligament

A
  • Most lateral
  • Originates lateral to EDB
  • Also blends with inferior fibular retinaculum
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27
Q

Intermediate root of frondiform ligament

A
  • Originates from sinus tarsi medial to EDB
  • Posterior to cervical ligament
  • Unites with lateral root to form superficial component of frondiform ligament
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28
Q

Medial root of forndiform ligament 3 components

A
  • Lateral calcaneal component
  • Medial calcaneal component
  • Talar component
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29
Q

Lateral calcaneal component of medial root (frondiform ligament)

A
  • Originates in sinus tarsi

- Posterior to intermediate root

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30
Q

Medial calcaneal component of medial root (frondiform ligament)

A
  • Attaches to floor of tarsal canal
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31
Q

Talar component of medial root (frondiform ligament)

A
  • Attaches to roof of tarsal canal (neck of talus)
32
Q

Great tarsal joint

A
  • Consist of bones of the midfoot

- Articulations share a joint capsule lined with synovium

33
Q

Great tarsal joint functional classification

A
  • Planar, synovial joints

- Diarthrosis

34
Q

Great tarsal joint blood supply

A
  • Branches of dorsalis pedis (tarsal arteries)

- Medial/lateral plantar arteries

35
Q

Articulations of the great tarsal joint

A
  • Cuneonavicular joints
  • Intercuneiform joints
  • Cuneocuboid joint
  • Cuboidonavicular joint
  • 2nd/3rd cuneometatarsal joints
  • Intermetatarsal joint of 2nd/3rd mets (sometimes 3rd/4th too)
36
Q

Cuneonavicular joints

A
  • 3 cuneiforms

- Navicular

37
Q

Cuneocuboid joint

A
  • Lateral cuneiform

- Cuboid

38
Q

Cuboideonavicular joint

A
  • Synovial joint present 50%
  • Medial surface of cuboid
  • Lateral surface of navicular
39
Q

2nd/3rd Cuneometatarsal joint

A
  • Together can be referred to as the intermediate tarsometatarsal joint
  • Base of 2nd metatarsal and cuneiforms
  • Lateral cuneiform and base of 3rd metatarsal
40
Q

Ligaments of the great tarsal joint

A
  • Dorsal (3), plantar (3) cuneonavicular
  • Dorsal (2), interosseous (2), plantar (2) intercuneiform ligaments
  • Dorsal, interosseous, plantar cuneocuboid
  • Dorsal, interosseous, plantar cuboideonavicular
41
Q

Cuneonavicular joints liaments

A
  • Dorsal (3), plantar (3) cuneonavicular
  • One between each cuneiform and navicular
  • NO interosseous ligaments
42
Q

Intercuneiform joints ligaments

A
  • Dorsal (2), interosseous (2), plantar (2) intercuneiform
  • One between each cuneiform
  • Supports transverse arch
43
Q

Cuneocuboid joint ligaments

A
  • Dorsal, interosseous, plantar cuneocuboid

- Supports transverse arch

44
Q

Cuboideonavicular joint ligaments

A
  • Dorsal, interosseous, plantar cuboideonavicular

- Interosseous is small if synovial joint is present

45
Q

Tarsometatarsal joints (Lisfranc’s Joint)

A
  • Functional joint between metatarsals and cuboid/cuneiforms
46
Q

Tarsometatarsal joints (Lisfranc’s Joint) functional classification

A
  • Planar, synovial joints

- Diarthrosis (not much movement)

47
Q

The cuneiforms in Lisfranc’s joint form a mortise for

A
  • 2nd metatarsal base
  • Functions as a tenon
  • Very important in the stability of Lisfranc’s joint
48
Q

The 2-4th metatarsal bases of Lisfranc’s joint form a shallow mortise for

A
  • Lateral cuneiform
49
Q

3 articular compartments of tarsometatarsal (Lisfranc’s) joint

A
  • 1st cuneometatarsal joint (medial tarsometatarsal joint)
  • 2nd/3rd Cuneometatarsal joint (intermediate tarsometatarsal joint)
  • Metatarsocuboid joint of 4 and 5 (Lateral tarsometatarsal joint)
50
Q

1st cuneometatarsal joint (medial tarsometatarsal joint)

A
  • Between medial cuneiform/1st metatarsal

- Joint capsule attached to articular margins

51
Q

1st cuneometatarsal joint (medial tarsometatarsal joint) functional classification

A
  • Planar, synovial

- Diarthrosis

52
Q

1st cuneometatarsal joint (medial tarsometatarsal joint) blood supply

A
  • Medial plantar

- Dorsalis pedis

53
Q

2nd/3rd cuneometatarsal joint (intermediate tarsometatarsal joint)

A
  • Also part of great tarsal joint

- Between 2nd met base with all 3 cuneiforms/3rd metatarsal base with lateral cuneiform

54
Q

2nd/3rd cuneometatarsal joint (intermediate tarsometatarsal joint) blood supply

A
  • Branches from deep plantar arch

- Branches from dorsalis pedis

55
Q

Metatarsocuboid joint of 4 and 5 (lateral tarsometatarsal joint)

A
  • Cuboid/bases of the 4th and 5th metatarsals
56
Q

Metatarsocuboid joint of 4 and 5 (lateral tarsometatarsal joint) functional classificaiton

A
  • Planar, synovial joint

- Diarthrosis

57
Q

Metatarsocuboid joint of 4 and 5 (lateral tarsometatarsal joint) blood supply

A
  • Branches from arcuate
  • Branches from lateral tarsal
  • Branches from deep plantar arch
58
Q

Ligaments of tarsometatarsal joint

A
  • Dorsal tarsometatarsal (7-8 of them)

- Plantar tarsometatarsal (irregular in number 3-5)

59
Q

1st dorsal tarsometatarsal ligament attaches

A
  • Medial cuneiform

- 1st metatarsal base

60
Q

2nd dorsal tarsometatarsal ligament attaches

A
  • Medial cuneiform

- 2nd metatarsal base

61
Q

3rd dorsal tarsometatarsal ligament attaches

A
  • Intermediate cuneiform

- 2nd metatarsal base

62
Q

4th dorsal tarsometatarsal ligament attaches

A
  • Lateral cuneiform

- 2nd metatarsal base

63
Q

5th dorsal tarsometatarsal ligament attaches

A
  • Lateral cuneiform and 3rd metatarsal base

- Lateral cuneiform and 4th met base

64
Q

6th dorsal tarsometatarsal ligament attaches

A
  • Dorsomedial cuboid

- 4th metatarsal bases

65
Q

7th dorsal tarsometatarsal ligament attaches

A
  • Dorsolateral cuboid

- 5th metatarsal base

66
Q

NO plantar tarsometatarsal ligament attach to the

A
  • Intermediate cuneiform
67
Q

1st plantar tarsometatarsal ligament attaches

A
  • 1st medial cuneiform

- 1st metatarsal base

68
Q

2nd plantar tarsometatarsal ligament attaches

A
  • 2nd medial cuneiform, splits into 2 bands

- 2nd (deep) and 3rd (superficial) metatarsal bases

69
Q

3rd plantar tarsometatarsal ligament attaches

A
  • Lateral cuneiform

- 3rd (sometimes 4th) metatarsal base

70
Q

4th plantar tarsometatarsal ligament attaches

A
  • Cuboid

- 4th metatarsal base

71
Q

5th plantar tarsometatarsal ligament attaches

A
  • Cuboid

- 5th metatarsal base

72
Q

Interosseous tarsometatarsal ligaments (3)

A
  • Lisfranc’s ligament (1st or medial interosseous tarsometatarsal ligament)
  • Intermediate interosseous tarsometatarsal ligament (2nd………)
  • Lateral interosseous tarsometatarsal ligament (3rd……..)
73
Q

Lisfranc’s ligament (1st or medial interosseous tarsometatarsal ligament)

A
  • Stronger than other interosseous tarsometatarsal ligaments

- Important for Lisfranc joint stability

74
Q

Lisfranc’s ligament (1st or medial interosseous tarsometatarsal ligament) attaches

A
  • Lateral aspect of medial cuneiform

- Medial aspect of 2nd met base

75
Q

Intermediate interosseous tarsometatarsal ligament attaches

A
  • Medial aspect of lateral cuneiform

- Lateral aspect of 2nd met base

76
Q

Lateral interosseous tarsometatarsal ligament attaches

A
  • Lateral surface of lateral cuneiform

- Medial aspect of 4th met base