ankle and foot Flashcards

1
Q

where does the talocrural fibrous capsule attach

A

borders of articular surfaces of tibia and malleoli

to margins of trochlear surface of talus

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2
Q

wherer does the medial collateral (deltoid) ligament attach

A

medial malleolus to talus
navicular
sustentaculum tali of calcaneous

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3
Q

what is the function of the deltoid ligament

A

stabilizes joint

resists talocrural and subtalar eversion

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4
Q

where does the posterior talofibular lig attach

A

malleolar fossas of the fibula

lateral tubercule of talus

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5
Q

what does the posterior talofibular lig do

A

restricts talocrural inversion

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6
Q

where does the calcaneofibular lig attach

A

tip of lateral malleolus

lateral surface calcaneous

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7
Q

what does the calcaneofibular lig do

A

resists calcaneal/subtalar inversion

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8
Q

where does the anterior talofibular lig attach

A

anterior lateral malleolus of the fibula

neck of the talus

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9
Q

what does the anterior talofibular lig do

A

resists talocrural inversion and

anterior translation of talus

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10
Q

where does the long plantar lig attach

A

plantar surface calcenus and cuboid

to plantar surface bases of metatarsals

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11
Q

where does plantar calcaneocuboid lig (short plantar lig) attach

A

calcaneus

plantar surface of cuboid

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12
Q

where does plantar calcaneonavicular (spring lig) attach

A

anterior margin of sustentaculum tali

plantar surfaace naviular

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13
Q

what joint is considered the mortise

A

talocrural

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14
Q

which ligaments stabilizie the tibia and fibula

A
  • interosseus membrane

- anterior inferior tibiofibular lig

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15
Q

what kind of joint is the talocrural

A

hinge

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16
Q

explain the talocrural joint

A
  • convex talus

- concave distal tibia

17
Q

what happens with talocrural DF during open chain

A
  • posterior glide talus in mortise
  • gapping or separation of syndesmosis
  • fibula glides posterior
18
Q

what happens with talocrural PF during open chain

A
  • anterior glide talus in mortise
  • closing of syndesmosis
  • fibula glides anterior
19
Q

what are the 3 parts of the deltoid lig

A
  1. tibiotalar
  2. tibiocalcaneal
  3. tibionavicular
20
Q

what does the deltoid lig do

A

resists forced eversion of:

  1. talus
  2. calcaneous
  3. navicular
21
Q

what are the 3 lateral ankle ligs

A
  1. ATFL
  2. CFL
  3. PTFL
22
Q

which joints make up the rearfoot

A
  1. talonavicular

2. talocalcaneal (main)

23
Q

what happens in the anterior rearfoot

A
  • convex talus on concave calcaneous

- navicular bones

24
Q

what happens in the talocacaneal joint

A

concave talus

convex calcaneus

25
Q

what are the 3 subtalar planes of motion

A
  1. inversion/eversion
  2. DF/PF
  3. adduction/abd
26
Q

what happens in NWB

A

calcaneus moves on talus

27
Q

what happens in WB

A

talus moves on calcaneus

28
Q

what happens with pronation NWB

A
  1. calcaneal eversion
  2. calcaneal abduction
  3. calceaneal DF
29
Q

what happens with pronation WB

A
  1. calceaneal eversion
  2. talar adduction
  3. talar PF
30
Q

what happens with supination NWB

A
  1. calceanal inversion
  2. calceanal adduction
  3. calceanal PF
31
Q

what happens with supination WB

A
  1. calcaneal inversion
  2. talar abduction
  3. talar DF
32
Q

with proximal and distal segments, what happens during supination

A

ER tibia

-inversion, adduction, PF foot

33
Q

with proximal and distal segments, what happens during pronation

A

IR tibia

-eversion, abduction, DF foot

34
Q

how can a spring lig rupture happen?

A
  • acute trauma
  • diaabetes

loss of medial long arch
-inferior migration of talus

35
Q

describe metatarsophalangeal joints

A

synovial condyloid

  • convex head of metatarsal
  • concave based of prox phalanges