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Osteology of the Foot > Cuneiform Bones > Flashcards

Cuneiform Bones Flashcards

1
Q

Which is the largest cuneiform?

A

medial cuneiform

think about how it attaches to the 1st met which is very large!

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2
Q

The tendons of what 3 muscles insert at the plantar surface of the medial cuneiform?

A
  1. tibialis anterior
  2. tibialis posterior
  3. peroneus longus
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3
Q

Which ligaments attach to the plantar surface of the medial cuneiform?

A
  1. plantar cuneonavicular
  2. plantar intercuneiform
  3. plantar cuneometatarsal (to 1st met)
  4. plantar cuneometatarsal (to 2nd met)
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4
Q

Which ligaments attach to the medial surface of the medial cuneiform?

A
  1. medial cuneonavicular
  2. dorsal cuneonavicular
  3. dorsal intercuneiform
  4. dorsal cuneometatarsal (to 1st met)
  5. dorsal cuneometatarsal (to 2nd met)
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5
Q

Describe the lateral surface of the medial cuneiform.

A

concave and has 2 articular facets:

  • small oval facet found anteriorly for the base of the 2nd met
  • facet for the intermediate cuneiform has the shape of an inverted L
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6
Q

Where is the “inverted” L located?

A
  1. lateral surface of the medial cuneiform
    * for its articulation with the intermediate cuneiform
  2. medial surface of the intermediate cuneiform (for its articulation with the medial cuneiform)
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7
Q

What ligaments are attached to the lateral surface of the medial cuneiform?

A

Lisfranc’s ligament

and an interosseous cuneiform ligament to the int. cuneiform

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8
Q

What is Lisfranc’s ligament?

A

an interosseous tarsometatarsal ligament; it is attached to the lateral surface of the medial cuneiform and the 2nd met

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9
Q

describe the anterior surface of the medial cuneiform.

A

has a kidney-shaped (reniform) surface

*for articulation with the base of teh 1st met

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10
Q

describe the posterior surface of teh medial cuneiform.

A

concave pear-shaped/ triangular; articulates with the navicular

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11
Q

The apices of all the cuneiforms are directed plantarly except for which cuneiform?

A

medial cuneiform (its apex is directed dorsally)

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12
Q

Which cuneiform has a “square” shape for its base that forms the dorsal surface? vs. which cuneiform is “rectangular”?

A

intermediate cuneiform- square

lateral cuneiform- rectangular

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13
Q

What ligaments attach to the intermediate cuneiform?

A

(there is one for each of the 4 bones that it articulates with)

  1. dorsal cuneonavicular
  2. two dorsal intercuneiform
  3. dorsal cuneometatarsal
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14
Q

What structures are attached to the plantar surface of the intermediate cuneiform?

A
  1. plantar cuneonavicular
  2. two plantar intercuneiforms
  3. partial attachment for the tibialis posterior
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15
Q

The lateral surface for the intermediate cuneiform has both an articular area and a non-articular area. What is the shape of the articular facet? What is the nonarticular area for?

A

smooth- its shape is an elongated oval

*non-articular area is for the attachment of the interosseous intercuneiform ligament to the lateral cuneiform

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16
Q

What ligaments attach to the dorsal surface of the lateral cuneiform?

A
  1. dorsal cuneocuboid
  2. dorsal cuneonavicular
  3. dorsal intercuneiform
  4. two dorsal cuneometatarsal ligaments
17
Q

what two muscles and two ligaments are attached to the plantar surface of the lateral cuneiform?

A
  1. flexor hallucis brevis
  2. tibialis posterior
  3. plantar intercuneiform
  4. plantar cuneometatarsal
18
Q

Describe the medial surface of the lateral cuneiform.

A

(rectangular in shape)

  • posteriorly, there is a vertically oriented oval facet for articulation with the int. cuneiform
  • anteriorly, there are two oval facets for articulation with the 2nd met
19
Q

what is the only ligament attached to the medial surface of the lateral cuneiform?

A

interosseous intercuneiform

20
Q

Describe the lateral surface of the lateral cuneiform.

A

(is rectangular). It has two facets. The larger facet, located posteriorly, is triangular and is for the cuboid. The smaller facet, found anteriorly, is oval and is for articulation with the 4th metatarsal.

21
Q

What is the only ligament attached to the lateral surface of lateral cuneiform?

A

interosseous cuneocuboid

Osteology of the Foot (8 decks)

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