Ligaments of the leg, ankle and foot Flashcards

Attachments of ligaments and function (action prevention)

1
Q

4 ligaments of the deltoid ligament

A
  1. tibionavicular
  2. tibiocalcaneal
  3. anterior tibiotalar
  4. posterior tibiotalar
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2
Q

Tibionavicular ligament

A

Tibia + Navicular

  • limits excessive eversion in plantar flexion
  • prevents inward displacement of head of talus
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3
Q

Tibiocalcaneal ligament

A

Tibia + Calacanues

  • limits eversion
  • prevents valgus displacement of ankle
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4
Q

Posterior tibiotalar ligament

A

Tibia + talus

  • resists dorsiflexion
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5
Q

Anterior tibiotalar ligament

A

Tibia + talus

  • resists plantarflexion
  • limits eversion in dorsiflexion
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6
Q

Spring ligament (plantar calcaneonavicular ligament)

A

Sustentaculum tali + navicular

Maintains the longitudinal arch of the foot

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7
Q

Anterior talofibular ligament

A

lateral malleolus + talus

  • resists foot inversion
  • resists medial (internal) rotation of the talus within the ankle mortise
  • resists anterior shift of the foot in anatomical position (anterior shift of the talus)
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8
Q

Calacaneofibular ligament

A

lateral malleolus + lateral part of calcaneus

  • resists extreme inversion and dorsiflexion
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9
Q

Posterior talofibular ligament

A

back of lateral malleolus + back of talus

  • limits posterior shift of the talus (or anterior shift of the fibular-tibia)
  • limits external rotation of the talus (or internal rotation of the fibula)
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10
Q

Short plantar ligament (plantar calcaneocuboidal)

A

plantar side of calcaneus + cuboid

  • helps maintain the longitudinal arches of the foot
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11
Q

Long plantar ligament (plantar calcaneometatarsal)

A

plantar side of calcaneus + bases of lateral metatarsals

  • helps support the longitudinal arches of the foot
  • converts the groove of cuboid into a tunnel for tendon of fibularis longus to pass
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12
Q

Bifurcate ligament

A

calcaneus + cuboid + navicular

just attaches bones

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13
Q

Interosseous talocalcaneal ligament

A

inside the tarsal sinus
calcaneal sulcus + talar sulcus

  • serves as a fulcrum about which movements between the talus and calcaneus take place
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14
Q

Plantar fascia (plantar aponeurosis)

A

underside of calcaneus + base of proximal phalanges

  • heightens the arch of the foot by lengthening when the metatarsophalangeal joint passively extends during walking
  • windlass effect*
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15
Q

Intertarsal ligaments

A

join tarsals together

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16
Q

Tarsometatarsal ligaments

A

join tarsals and metatarsals